Merge branch 'issue-board-sidebar' into 'master'

Issue board sidebar

## What does this MR do?

Adds a sidebar when clicking an issue in the issue boards lists. This allows user to easily update other parts of the issue details without having to visit the issue itself. Same functionality as on issue page.

When creating a new issue the sidebar automatically opens.

## Screenshots (if relevant)

![Screen_Shot_2016-10-07_at_13.10.16](/uploads/ad08785f407d8ac3fe9cb078868a7839/Screen_Shot_2016-10-07_at_13.10.16.png)

## What are the relevant issue numbers?

Closes #21219

See merge request !6690

35 files changed, 913 insertions, 48 deletions

diff --git a/app/assets/javascripts/boards/boards_bundle.js.es6 b/app/assets/javascripts/boards/boards_bundle.js.es6
index d4f8f4b9420..56f91503017 100644
--- a/app/assets/javascripts/boards/boards_bundle.js.es6
+++ b/app/assets/javascripts/boards/boards_bundle.js.es6
@@ -5,7 +5,9 @@
 //= require_tree ./stores
 //= require_tree ./services
 //= require_tree ./mixins
+//= require_tree ./filters
 //= require ./components/board
+//= require ./components/board_sidebar
 //= require ./components/new_list_dropdown
 //= require ./vue_resource_interceptor
 
@@ -22,7 +24,8 @@ $(() => {
   gl.IssueBoardsApp = new Vue({
     el: $boardApp,
     components: {
-      'board': gl.issueBoards.Board
+      'board': gl.issueBoards.Board,
+      'board-sidebar': gl.issueBoards.BoardSidebar
     },
     data: {
       state: Store.state,
@@ -30,9 +33,15 @@ $(() => {
       endpoint: $boardApp.dataset.endpoint,
       boardId: $boardApp.dataset.boardId,
       disabled: $boardApp.dataset.disabled === 'true',
-      issueLinkBase: $boardApp.dataset.issueLinkBase
+      issueLinkBase: $boardApp.dataset.issueLinkBase,
+      detailIssue: Store.detail
     },
     init: Store.create.bind(Store),
+    computed: {
+      detailIssueVisible () {
+        return Object.keys(this.detailIssue.issue).length;
+      }
+    },
     created () {
       gl.boardService = new BoardService(this.endpoint, this.boardId);
     },
diff --git a/app/assets/javascripts/boards/components/board.js.es6 b/app/assets/javascripts/boards/components/board.js.es6
index cacb36a897f..500213a3a43 100644
--- a/app/assets/javascripts/boards/components/board.js.es6
+++ b/app/assets/javascripts/boards/components/board.js.es6
@@ -21,6 +21,7 @@
     },
     data () {
       return {
+        detailIssue: Store.detail,
         filters: Store.state.filters,
         showIssueForm: false
       };
@@ -32,6 +33,26 @@
           this.list.getIssues(true);
         },
         deep: true
+      },
+      detailIssue: {
+        handler () {
+          if (!Object.keys(this.detailIssue.issue).length) return;
+
+          const issue = this.list.findIssue(this.detailIssue.issue.id);
+
+          if (issue) {
+            const boardsList = document.querySelectorAll('.boards-list')[0];
+            const right = (this.$el.offsetLeft + this.$el.offsetWidth) - boardsList.offsetWidth;
+            const left = boardsList.scrollLeft - this.$el.offsetLeft;
+
+            if (right - boardsList.scrollLeft > 0) {
+              boardsList.scrollLeft = right;
+            } else if (left > 0) {
+              boardsList.scrollLeft = this.$el.offsetLeft;
+            }
+          }
+        },
+        deep: true
       }
     },
     methods: {
diff --git a/app/assets/javascripts/boards/components/board_card.js.es6 b/app/assets/javascripts/boards/components/board_card.js.es6
index 4a7cfeaeab2..f743d72f936 100644
--- a/app/assets/javascripts/boards/components/board_card.js.es6
+++ b/app/assets/javascripts/boards/components/board_card.js.es6
@@ -12,6 +12,17 @@
       disabled: Boolean,
       index: Number
     },
+    data () {
+      return {
+        showDetail: false,
+        detailIssue: Store.detail
+      };
+    },
+    computed: {
+      issueDetailVisible () {
+        return this.detailIssue.issue && this.detailIssue.issue.id === this.issue.id;
+      }
+    },
     methods: {
       filterByLabel (label, e) {
         let labelToggleText = label.title;
@@ -37,6 +48,29 @@
         $('.labels-filter .dropdown-toggle-text').text(labelToggleText);
 
         Store.updateFiltersUrl();
+      },
+      mouseDown () {
+        this.showDetail = true;
+      },
+      mouseMove () {
+        if (this.showDetail) {
+          this.showDetail = false;
+        }
+      },
+      showIssue (e) {
+        const targetTagName = e.target.tagName.toLowerCase();
+
+        if (targetTagName === 'a' || targetTagName === 'button') return;
+
+        if (this.showDetail) {
+          this.showDetail = false;
+
+          if (Store.detail.issue && Store.detail.issue.id === this.issue.id) {
+            Store.detail.issue = {};
+          } else {
+            Store.detail.issue = this.issue;
+          }
+        }
       }
     }
   });
diff --git a/app/assets/javascripts/boards/components/board_new_issue.js.es6 b/app/assets/javascripts/boards/components/board_new_issue.js.es6
index a4fad422eca..b31adfdb8da 100644
--- a/app/assets/javascripts/boards/components/board_new_issue.js.es6
+++ b/app/assets/javascripts/boards/components/board_new_issue.js.es6
@@ -1,4 +1,6 @@
 (() => {
+  const Store = gl.issueBoards.BoardsStore;
+
   window.gl = window.gl || {};
 
   gl.issueBoards.BoardNewIssue = Vue.extend({
@@ -27,13 +29,16 @@
         const labels = this.list.label ? [this.list.label] : [];
         const issue = new ListIssue({
           title: this.title,
-          labels
+          labels,
+          subscribed: true
         });
 
         this.list.newIssue(issue)
           .then((data) => {
             // Need this because our jQuery very kindly disables buttons on ALL form submissions
             $(this.$els.submitButton).enable();
+
+            Store.detail.issue = issue;
           })
           .catch(() => {
             // Need this because our jQuery very kindly disables buttons on ALL form submissions
diff --git a/app/assets/javascripts/boards/components/board_sidebar.js.es6 b/app/assets/javascripts/boards/components/board_sidebar.js.es6
new file mode 100644
index 00000000000..e83e69247d9
--- /dev/null
+++ b/app/assets/javascripts/boards/components/board_sidebar.js.es6
@@ -0,0 +1,52 @@
+(() => {
+  const Store = gl.issueBoards.BoardsStore;
+
+  window.gl = window.gl || {};
+  window.gl.issueBoards = window.gl.issueBoards || {};
+
+  gl.issueBoards.BoardSidebar = Vue.extend({
+    props: {
+      currentUser: Object
+    },
+    data() {
+      return {
+        detail: Store.detail,
+        issue: {}
+      };
+    },
+    computed: {
+      showSidebar () {
+        return Object.keys(this.issue).length;
+      }
+    },
+    watch: {
+      detail: {
+        handler () {
+          this.issue = this.detail.issue;
+        },
+        deep: true
+      },
+      issue () {
+        if (this.showSidebar) {
+          this.$nextTick(() => {
+            $('.right-sidebar').getNiceScroll(0).doScrollTop(0, 0);
+            $('.right-sidebar').getNiceScroll().resize();
+          });
+        }
+      }
+    },
+    methods: {
+      closeSidebar () {
+        this.detail.issue = {};
+      }
+    },
+    ready () {
+      new IssuableContext(this.currentUser);
+      new MilestoneSelect();
+      new gl.DueDateSelectors();
+      new LabelsSelect();
+      new Sidebar();
+      new Subscription('.subscription');
+    }
+  });
+})();
diff --git a/app/assets/javascripts/boards/filters/due_date_filters.js.es6 b/app/assets/javascripts/boards/filters/due_date_filters.js.es6
new file mode 100644
index 00000000000..50ef1911022
--- /dev/null
+++ b/app/assets/javascripts/boards/filters/due_date_filters.js.es6
@@ -0,0 +1,4 @@
+Vue.filter('due-date', (value) => {
+  const date = new Date(value);
+  return $.datepicker.formatDate('M d, yy', date);
+});
diff --git a/app/assets/javascripts/boards/mixins/sortable_default_options.js.es6 b/app/assets/javascripts/boards/mixins/sortable_default_options.js.es6
index f629d45c587..bd9ba7d5118 100644
--- a/app/assets/javascripts/boards/mixins/sortable_default_options.js.es6
+++ b/app/assets/javascripts/boards/mixins/sortable_default_options.js.es6
@@ -22,7 +22,7 @@
       fallbackOnBody: true,
       ghostClass: 'is-ghost',
       filter: '.has-tooltip, .btn',
-      delay: gl.issueBoards.touchEnabled ? 100 : 0,
+      delay: gl.issueBoards.touchEnabled ? 100 : 50,
       scrollSensitivity: gl.issueBoards.touchEnabled ? 60 : 100,
       scrollSpeed: 20,
       onStart: gl.issueBoards.onStart,
diff --git a/app/assets/javascripts/boards/models/issue.js.es6 b/app/assets/javascripts/boards/models/issue.js.es6
index eb082103de9..03fd6c05d87 100644
--- a/app/assets/javascripts/boards/models/issue.js.es6
+++ b/app/assets/javascripts/boards/models/issue.js.es6
@@ -3,12 +3,18 @@ class ListIssue {
     this.id = obj.iid;
     this.title = obj.title;
     this.confidential = obj.confidential;
+    this.dueDate = obj.due_date;
+    this.subscribed = obj.subscribed;
     this.labels = [];
 
     if (obj.assignee) {
       this.assignee = new ListUser(obj.assignee);
     }
 
+    if (obj.milestone) {
+      this.milestone = new ListMilestone(obj.milestone);
+    }
+
     obj.labels.forEach((label) => {
       this.labels.push(new ListLabel(label));
     });
@@ -41,4 +47,21 @@ class ListIssue {
   getLists () {
     return gl.issueBoards.BoardsStore.state.lists.filter( list => list.findIssue(this.id) );
   }
+
+  update (url) {
+    const data = {
+      issue: {
+        milestone_id: this.milestone ? this.milestone.id : null,
+        due_date: this.dueDate,
+        assignee_id: this.assignee ? this.assignee.id : null,
+        label_ids: this.labels.map( (label) => label.id )
+      }
+    };
+
+    if (!data.issue.label_ids.length) {
+      data.issue.label_ids = [''];
+    }
+
+    return Vue.http.patch(url, data);
+  }
 }
diff --git a/app/assets/javascripts/boards/models/milestone.js.es6 b/app/assets/javascripts/boards/models/milestone.js.es6
new file mode 100644
index 00000000000..577adf11265
--- /dev/null
+++ b/app/assets/javascripts/boards/models/milestone.js.es6
@@ -0,0 +1,6 @@
+class ListMilestone {
+  constructor (obj) {
+    this.id = obj.id;
+    this.title = obj.title;
+  }
+}
diff --git a/app/assets/javascripts/boards/services/board_service.js.es6 b/app/assets/javascripts/boards/services/board_service.js.es6
index b9c91cbf31e..b76063911bb 100644
--- a/app/assets/javascripts/boards/services/board_service.js.es6
+++ b/app/assets/javascripts/boards/services/board_service.js.es6
@@ -1,7 +1,5 @@
 class BoardService {
   constructor (root, boardId) {
-    Vue.http.options.root = root;
-
     this.lists = Vue.resource(`${root}/${boardId}/lists{/id}`, {}, {
       generate: {
         method: 'POST',
diff --git a/app/assets/javascripts/boards/stores/boards_store.js.es6 b/app/assets/javascripts/boards/stores/boards_store.js.es6
index a12d3a59265..c30f66e3a5a 100644
--- a/app/assets/javascripts/boards/stores/boards_store.js.es6
+++ b/app/assets/javascripts/boards/stores/boards_store.js.es6
@@ -5,6 +5,9 @@
   gl.issueBoards.BoardsStore = {
     disabled: false,
     state: {},
+    detail: {
+      issue: {}
+    },
     moving: {
       issue: {},
       list: {}
diff --git a/app/assets/javascripts/due_date_select.js.es6 b/app/assets/javascripts/due_date_select.js.es6
index 41925fcc8e3..27a7b95e281 100644
--- a/app/assets/javascripts/due_date_select.js.es6
+++ b/app/assets/javascripts/due_date_select.js.es6
@@ -41,7 +41,12 @@
         defaultDate: $("input[name='" + this.fieldName + "']").val(),
         altField: "input[name='" + this.fieldName + "']",
         onSelect: () => {
-          return this.saveDueDate(true);
+          if (this.$dropdown.hasClass('js-issue-boards-due-date')) {
+            gl.issueBoards.BoardsStore.detail.issue.dueDate = $(`input[name='${this.fieldName}']`).val();
+            this.updateIssueBoardIssue();
+          } else {
+            return this.saveDueDate(true);
+          }
         }
       });
     }
@@ -49,8 +54,14 @@
     initRemoveDueDate() {
       this.$block.on('click', '.js-remove-due-date', (e) => {
         e.preventDefault();
-        $("input[name='" + this.fieldName + "']").val('');
-        return this.saveDueDate(false);
+
+        if (this.$dropdown.hasClass('js-issue-boards-due-date')) {
+          gl.issueBoards.BoardsStore.detail.issue.dueDate = '';
+          this.updateIssueBoardIssue();
+        } else {
+          $("input[name='" + this.fieldName + "']").val('');
+          return this.saveDueDate(false);
+        }
       });
     }
 
@@ -83,6 +94,18 @@
       this.datePayload = datePayload;
     }
 
+    updateIssueBoardIssue () {
+      this.$loading.fadeIn();
+      this.$dropdown.trigger('loading.gl.dropdown');
+      this.$selectbox.hide();
+      this.$value.css('display', '');
+
+      gl.issueBoards.BoardsStore.detail.issue.update(this.$dropdown.attr('data-issue-update'))
+        .then(() => {
+          this.$loading.fadeOut();
+        });
+    }
+
     submitSelectedDate(isDropdown) {
       return $.ajax({
         type: 'PUT',
diff --git a/app/assets/javascripts/gl_dropdown.js b/app/assets/javascripts/gl_dropdown.js
index 82bbd464332..167979a55d9 100644
--- a/app/assets/javascripts/gl_dropdown.js
+++ b/app/assets/javascripts/gl_dropdown.js
@@ -622,6 +622,17 @@
           selectedObject = this.renderedData[selectedIndex];
         }
       }
+
+      if (this.options.vue) {
+        if (el.hasClass(ACTIVE_CLASS)) {
+          el.removeClass(ACTIVE_CLASS);
+        } else {
+          el.addClass(ACTIVE_CLASS);
+        }
+
+        return selectedObject;
+      }
+
       field = [];
       value = this.options.id ? this.options.id(selectedObject, el) : selectedObject.id;
       if (isInput) {
diff --git a/app/assets/javascripts/labels_select.js b/app/assets/javascripts/labels_select.js
index b4f6e70f694..4e29ab71bd4 100644
--- a/app/assets/javascripts/labels_select.js
+++ b/app/assets/javascripts/labels_select.js
@@ -22,7 +22,7 @@
         abilityName = $dropdown.data('ability-name');
         $selectbox = $dropdown.closest('.selectbox');
         $block = $selectbox.closest('.block');
-        $form = $dropdown.closest('form');
+        $form = $dropdown.closest('form, .js-issuable-update');
         $sidebarCollapsedValue = $block.find('.sidebar-collapsed-icon span');
         $sidebarLabelTooltip = $block.find('.js-sidebar-labels-tooltip');
         $value = $block.find('.value');
@@ -317,6 +317,7 @@
             }
           },
           multiSelect: $dropdown.hasClass('js-multiselect'),
+          vue: $dropdown.hasClass('js-issue-board-sidebar'),
           clicked: function(label, $el, e) {
             var isIssueIndex, isMRIndex, page;
             _this.enableBulkLabelDropdown();
@@ -334,7 +335,7 @@
             page = $('body').data('page');
             isIssueIndex = page === 'projects:issues:index';
             isMRIndex = page === 'projects:merge_requests:index';
-            if ($('html').hasClass('issue-boards-page')) {
+            if ($('html').hasClass('issue-boards-page') && !$dropdown.hasClass('js-issue-board-sidebar')) {
               if (label.isAny) {
                 gl.issueBoards.BoardsStore.state.filters['label_name'] = [];
               }
@@ -362,6 +363,30 @@
             else if ($dropdown.hasClass('js-filter-submit')) {
               return $dropdown.closest('form').submit();
             }
+            else if ($dropdown.hasClass('js-issue-board-sidebar')) {
+              if ($el.hasClass('is-active')) {
+                gl.issueBoards.BoardsStore.detail.issue.labels.push(new ListLabel({
+                  id: label.id,
+                  title: label.title,
+                  color: label.color[0],
+                  textColor: '#fff'
+                }));
+              }
+              else {
+                var labels = gl.issueBoards.BoardsStore.detail.issue.labels;
+                labels = labels.filter(function (selectedLabel) {
+                  return selectedLabel.id !== label.id;
+                });
+                gl.issueBoards.BoardsStore.detail.issue.labels = labels;
+              }
+
+              $loading.fadeIn();
+
+              gl.issueBoards.BoardsStore.detail.issue.update($dropdown.attr('data-issue-update'))
+                .then(function () {
+                  $loading.fadeOut();
+                });
+            }
             else {
               if ($dropdown.hasClass('js-multiselect')) {
 
diff --git a/app/assets/javascripts/milestone_select.js b/app/assets/javascripts/milestone_select.js
index cee42633c79..95b5b934c81 100644
--- a/app/assets/javascripts/milestone_select.js
+++ b/app/assets/javascripts/milestone_select.js
@@ -101,6 +101,7 @@
             // display:block overrides the hide-collapse rule
             return $value.css('display', '');
           },
+          vue: $dropdown.hasClass('js-issue-board-sidebar'),
           clicked: function(selected, $el, e) {
             var data, isIssueIndex, isMRIndex, page;
             page = $('body').data('page');
@@ -110,7 +111,7 @@
               e.preventDefault();
               return;
             }
-            if ($('html').hasClass('issue-boards-page')) {
+            if ($('html').hasClass('issue-boards-page') && !$dropdown.hasClass('js-issue-board-sidebar')) {
               gl.issueBoards.BoardsStore.state.filters[$dropdown.data('field-name')] = selected.name;
               gl.issueBoards.BoardsStore.updateFiltersUrl();
               e.preventDefault();
@@ -123,6 +124,24 @@
               return Issuable.filterResults($dropdown.closest('form'));
             } else if ($dropdown.hasClass('js-filter-submit')) {
               return $dropdown.closest('form').submit();
+            } else if ($dropdown.hasClass('js-issue-board-sidebar')) {
+              if (selected.id !== -1) {
+                Vue.set(gl.issueBoards.BoardsStore.detail.issue, 'milestone', new ListMilestone({
+                  id: selected.id,
+                  title: selected.name
+                }));
+              } else {
+                Vue.delete(gl.issueBoards.BoardsStore.detail.issue, 'milestone');
+              }
+
+              $dropdown.trigger('loading.gl.dropdown');
+              $loading.fadeIn();
+
+              gl.issueBoards.BoardsStore.detail.issue.update($dropdown.attr('data-issue-update'))
+                .then(function () {
+                  $dropdown.trigger('loaded.gl.dropdown');
+                  $loading.fadeOut();
+                });
             } else {
               selected = $selectbox.find('input[type="hidden"]').val();
               data = {};
diff --git a/app/assets/javascripts/right_sidebar.js b/app/assets/javascripts/right_sidebar.js
index c4b9557c421..870ddfe05f1 100644
--- a/app/assets/javascripts/right_sidebar.js
+++ b/app/assets/javascripts/right_sidebar.js
@@ -5,15 +5,24 @@
     function Sidebar(currentUser) {
       this.toggleTodo = bind(this.toggleTodo, this);
       this.sidebar = $('aside');
+      this.removeListeners();
       this.addEventListeners();
     }
 
+    Sidebar.prototype.removeListeners = function () {
+      this.sidebar.off('click', '.sidebar-collapsed-icon');
+      $('.dropdown').off('hidden.gl.dropdown');
+      $('.dropdown').off('loading.gl.dropdown');
+      $('.dropdown').off('loaded.gl.dropdown');
+      $(document).off('click', '.js-sidebar-toggle');
+    }
+
     Sidebar.prototype.addEventListeners = function() {
       this.sidebar.on('click', '.sidebar-collapsed-icon', this, this.sidebarCollapseClicked);
       $('.dropdown').on('hidden.gl.dropdown', this, this.onSidebarDropdownHidden);
       $('.dropdown').on('loading.gl.dropdown', this.sidebarDropdownLoading);
       $('.dropdown').on('loaded.gl.dropdown', this.sidebarDropdownLoaded);
-      $(document).off('click', '.js-sidebar-toggle').on('click', '.js-sidebar-toggle', function(e, triggered) {
+      $(document).on('click', '.js-sidebar-toggle', function(e, triggered) {
         var $allGutterToggleIcons, $this, $thisIcon;
         e.preventDefault();
         $this = $(this);
diff --git a/app/assets/javascripts/subscription.js b/app/assets/javascripts/subscription.js
index 5e3c5983d75..bfa3663bca3 100644
--- a/app/assets/javascripts/subscription.js
+++ b/app/assets/javascripts/subscription.js
@@ -5,10 +5,10 @@
     function Subscription(container) {
       this.toggleSubscription = bind(this.toggleSubscription, this);
       var $container;
-      $container = $(container);
-      this.url = $container.attr('data-url');
-      this.subscribe_button = $container.find('.js-subscribe-button');
-      this.subscription_status = $container.find('.subscription-status');
+      this.$container = $(container);
+      this.url = this.$container.attr('data-url');
+      this.subscribe_button = this.$container.find('.js-subscribe-button');
+      this.subscription_status = this.$container.find('.subscription-status');
       this.subscribe_button.unbind('click').click(this.toggleSubscription);
     }
 
@@ -18,17 +18,27 @@
       action = btn.find('span').text();
       current_status = this.subscription_status.attr('data-status');
       btn.addClass('disabled');
+
+      if ($('html').hasClass('issue-boards-page')) {
+        this.url = this.$container.attr('data-url');
+      }
+
       return $.post(this.url, (function(_this) {
         return function() {
           var status;
           btn.removeClass('disabled');
-          status = current_status === 'subscribed' ? 'unsubscribed' : 'subscribed';
-          _this.subscription_status.attr('data-status', status);
-          action = status === 'subscribed' ? 'Unsubscribe' : 'Subscribe';
-          btn.find('span').text(action);
-          _this.subscription_status.find('>div').toggleClass('hidden');
-          if (btn.attr('data-original-title')) {
-            return btn.tooltip('hide').attr('data-original-title', action).tooltip('fixTitle');
+
+          if ($('html').hasClass('issue-boards-page')) {
+            Vue.set(gl.issueBoards.BoardsStore.detail.issue, 'subscribed', !gl.issueBoards.BoardsStore.detail.issue.subscribed);
+          } else {
+            status = current_status === 'subscribed' ? 'unsubscribed' : 'subscribed';
+            _this.subscription_status.attr('data-status', status);
+            action = status === 'subscribed' ? 'Unsubscribe' : 'Subscribe';
+            btn.find('span').text(action);
+            _this.subscription_status.find('>div').toggleClass('hidden');
+            if (btn.attr('data-original-title')) {
+              return btn.tooltip('hide').attr('data-original-title', action).tooltip('fixTitle');
+            }
           }
         };
       })(this));
diff --git a/app/assets/javascripts/users_select.js b/app/assets/javascripts/users_select.js
index 3020b7cc239..da6a59bcf97 100644
--- a/app/assets/javascripts/users_select.js
+++ b/app/assets/javascripts/users_select.js
@@ -9,7 +9,11 @@
       this.usersPath = "/autocomplete/users.json";
       this.userPath = "/autocomplete/users/:id.json";
       if (currentUser != null) {
-        this.currentUser = JSON.parse(currentUser);
+        if (typeof currentUser === 'object') {
+          this.currentUser = currentUser;
+        } else {
+          this.currentUser = JSON.parse(currentUser);
+        }
       }
       $('.js-user-search').each((function(_this) {
         return function(i, dropdown) {
@@ -32,9 +36,30 @@
           $value = $block.find('.value');
           $collapsedSidebar = $block.find('.sidebar-collapsed-user');
           $loading = $block.find('.block-loading').fadeOut();
+
+          var updateIssueBoardsIssue = function () {
+            $loading.fadeIn();
+            gl.issueBoards.BoardsStore.detail.issue.update($dropdown.attr('data-issue-update'))
+              .then(function () {
+                $loading.fadeOut();
+              });
+          };
+
           $block.on('click', '.js-assign-yourself', function(e) {
             e.preventDefault();
-            return assignTo(_this.currentUser.id);
+
+            if ($dropdown.hasClass('js-issue-board-sidebar')) {
+              Vue.set(gl.issueBoards.BoardsStore.detail.issue, 'assignee', new ListUser({
+                id: _this.currentUser.id,
+                username: _this.currentUser.username,
+                name: _this.currentUser.name,
+                avatar_url: _this.currentUser.avatar_url
+              }));
+
+              updateIssueBoardsIssue();
+            } else {
+              return assignTo(_this.currentUser.id);
+            }
           });
           assignTo = function(selected) {
             var data;
@@ -150,6 +175,7 @@
               // display:block overrides the hide-collapse rule
               return $value.css('display', '');
             },
+            vue: $dropdown.hasClass('js-issue-board-sidebar'),
             clicked: function(user, $el, e) {
               var isIssueIndex, isMRIndex, page, selected;
               page = $('body').data('page');
@@ -160,7 +186,7 @@
                 selectedId = user.id;
                 return;
               }
-              if ($('html').hasClass('issue-boards-page')) {
+              if ($('html').hasClass('issue-boards-page') && !$dropdown.hasClass('js-issue-board-sidebar')) {
                 selectedId = user.id;
                 gl.issueBoards.BoardsStore.state.filters[$dropdown.data('field-name')] = user.id;
                 gl.issueBoards.BoardsStore.updateFiltersUrl();
@@ -170,6 +196,19 @@
                 return Issuable.filterResults($dropdown.closest('form'));
               } else if ($dropdown.hasClass('js-filter-submit')) {
                 return $dropdown.closest('form').submit();
+              } else if ($dropdown.hasClass('js-issue-board-sidebar')) {
+                if (user.id) {
+                  Vue.set(gl.issueBoards.BoardsStore.detail.issue, 'assignee', new ListUser({
+                    id: user.id,
+                    username: user.username,
+                    name: user.name,
+                    avatar_url: user.avatar_url
+                  }));
+                } else {
+                  Vue.delete(gl.issueBoards.BoardsStore.detail.issue, 'assignee');
+                }
+
+                updateIssueBoardsIssue();
               } else {
                 selected = $dropdown.closest('.selectbox').find("input[name='" + ($dropdown.data('field-name')) + "']").val();
                 return assignTo(selected);
diff --git a/app/assets/stylesheets/pages/boards.scss b/app/assets/stylesheets/pages/boards.scss
index d8fabbdcebe..ef6833c9845 100644
--- a/app/assets/stylesheets/pages/boards.scss
+++ b/app/assets/stylesheets/pages/boards.scss
@@ -45,6 +45,15 @@
   .page-with-sidebar {
     padding-bottom: 0;
   }
+
+  .issues-filters {
+    position: relative;
+    z-index: 999999;
+  }
+}
+
+.boards-app {
+  position: relative;
 }
 
 .boards-app-loading {
@@ -66,6 +75,10 @@
     height: 475px; // Needed for PhantomJS
     height: calc(100vh - 220px);
     min-height: 475px;
+
+    &.is-compact {
+      width: calc(100% - 290px);
+    }
   }
 }
 
@@ -184,6 +197,10 @@
     margin-bottom: 5px;
   }
 
+  &.is-active {
+    background-color: $row-hover;
+  }
+
   .label {
     border: 0;
     outline: 0;
@@ -212,6 +229,10 @@
     margin-right: 5px;
     font-size: (14px / $issue-boards-font-size) * 1em;
   }
+
+  .avatar {
+    margin-left: 0;
+  }
 }
 
 .card-number {
@@ -264,3 +285,48 @@
     border-width: 1px 0 1px 1px;
   }
 }
+
+.issue-boards-sidebar {
+  &.right-sidebar {
+    top: 153px;
+    bottom: 0;
+
+    @media (min-width: $screen-sm-min) {
+      top: 220px;
+    }
+  }
+
+  .issuable-sidebar-header {
+    position: relative;
+  }
+
+  .gutter-toggle {
+    position: absolute;
+    top: 0;
+    bottom: 15px;
+    right: 0;
+    width: 22px;
+    color: $gray-darkest;
+
+    svg {
+      position: absolute;
+      top: 50%;
+      margin-top: (-11px / 2);
+    }
+
+    &:hover {
+      path {
+        fill: $gray-darkest;
+      }
+    }
+  }
+
+  .issuable-header-text {
+    width: 100%;
+    padding-right: 35px;
+
+    > strong {
+      font-weight: 600;
+    }
+  }
+}
diff --git a/app/controllers/projects/boards/issues_controller.rb b/app/controllers/projects/boards/issues_controller.rb
index a2b01ff43dc..dc33e1405f2 100644
--- a/app/controllers/projects/boards/issues_controller.rb
+++ b/app/controllers/projects/boards/issues_controller.rb
@@ -73,10 +73,13 @@ module Projects
       def serialize_as_json(resource)
         resource.as_json(
           labels: true,
-          only: [:iid, :title, :confidential],
+          only: [:iid, :title, :confidential, :due_date],
           include: {
-            assignee: { only: [:id, :name, :username], methods: [:avatar_url] }
-          })
+            assignee: { only: [:id, :name, :username], methods: [:avatar_url] },
+            milestone: { only: [:id, :title] }
+          },
+          user: current_user
+        )
       end
     end
   end
diff --git a/app/models/issue.rb b/app/models/issue.rb
index 89158a50353..e356fe06363 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -287,10 +287,12 @@ class Issue < ActiveRecord::Base
 
   def as_json(options = {})
     super(options).tap do |json|
+      json[:subscribed] = subscribed?(options[:user]) if options.has_key?(:user)
+
       if options.has_key?(:labels)
         json[:labels] = labels.as_json(
           project: project,
-          only: [:id, :title, :description, :color],
+          only: [:id, :title, :description, :color, :priority],
           methods: [:text_color]
         )
       end
diff --git a/app/views/projects/boards/components/_card.html.haml b/app/views/projects/boards/components/_card.html.haml
index c6d718a1cd1..8fce702314c 100644
--- a/app/views/projects/boards/components/_card.html.haml
+++ b/app/views/projects/boards/components/_card.html.haml
@@ -7,8 +7,11 @@
   ":issue-link-base" => "issueLinkBase",
   ":disabled" => "disabled",
   "track-by" => "id" }
-  %li.card{ ":class" => "{ 'user-can-drag': !disabled && issue.id, 'is-disabled': disabled || !issue.id }",
-    ":index" => "index" }
+  %li.card{ ":class" => "{ 'user-can-drag': !disabled && issue.id, 'is-disabled': disabled || !issue.id, 'is-active': issueDetailVisible }",
+    ":index" => "index",
+    "@mousedown" => "mouseDown",
+    "@mouseMove" => "mouseMove",
+    "@mouseup" => "showIssue($event)" }
     %h4.card-title
       = icon("eye-slash", class: "confidential-icon", "v-if" => "issue.confidential")
       %a{ ":href" => "issueLinkBase + '/' + issue.id",
@@ -18,6 +21,11 @@
       %span.card-number{ "v-if" => "issue.id" }
         = precede '#' do
           {{ issue.id }}
+      %a.has-tooltip{ ":href" => "'#{root_path}' + issue.assignee.username",
+        ":title" => "'Assigned to ' + issue.assignee.name",
+        "v-if" => "issue.assignee",
+        data: { container: 'body' } }
+        %img.avatar.avatar-inline.s20{ ":src" => "issue.assignee.avatar", width: 20, height: 20 }
       %button.label.color-label.has-tooltip{ "v-for" => "label in issue.labels",
         type: "button",
         "v-if" => "(!list.label || label.id !== list.label.id)",
@@ -26,8 +34,3 @@
         ":title" => "label.description",
         data: { container: 'body' } }
         {{ label.title }}
-      %a.has-tooltip{ ":href" => "'#{root_path}' + issue.assignee.username",
-        ":title" => "'Assigned to ' + issue.assignee.name",
-        "v-if" => "issue.assignee",
-        data: { container: 'body' } }
-        %img.avatar.avatar-inline.s20{ ":src" => "issue.assignee.avatar", width: 20, height: 20 }
diff --git a/app/views/projects/boards/components/_sidebar.html.haml b/app/views/projects/boards/components/_sidebar.html.haml
new file mode 100644
index 00000000000..f0c0c6953e0
--- /dev/null
+++ b/app/views/projects/boards/components/_sidebar.html.haml
@@ -0,0 +1,23 @@
+%board-sidebar{ "inline-template" => true,
+  ":current-user" => "#{current_user.to_json(only: [:username, :id, :name], methods: [:avatar_url]) if current_user}" }
+  %aside.right-sidebar.right-sidebar-expanded.issue-boards-sidebar{ "v-show" => "showSidebar" }
+    .issuable-sidebar
+      .block.issuable-sidebar-header
+        %span.issuable-header-text.hide-collapsed.pull-left
+          %strong
+            {{ issue.title }}
+          %br/
+          %span
+            = precede "#" do
+              {{ issue.id }}
+        %a.gutter-toggle.pull-right{ role: "button",
+          href: "#",
+          "@click.prevent" => "closeSidebar",
+          "aria-label" => "Toggle sidebar" }
+          = custom_icon("icon_close", size: 15)
+      .js-issuable-update
+        = render "projects/boards/components/sidebar/assignee"
+        = render "projects/boards/components/sidebar/milestone"
+        = render "projects/boards/components/sidebar/due_date"
+        = render "projects/boards/components/sidebar/labels"
+        = render "projects/boards/components/sidebar/notifications"
diff --git a/app/views/projects/boards/components/sidebar/_assignee.html.haml b/app/views/projects/boards/components/sidebar/_assignee.html.haml
new file mode 100644
index 00000000000..604e13858d1
--- /dev/null
+++ b/app/views/projects/boards/components/sidebar/_assignee.html.haml
@@ -0,0 +1,40 @@
+.block.assignee
+  .title.hide-collapsed
+    Assignee
+    = icon("spinner spin", class: "block-loading")
+    - if can?(current_user, :admin_issue, @project)
+      = link_to "Edit", "#", class: "edit-link pull-right"
+  .value.hide-collapsed
+    %span.assign-yourself.no-value{ "v-if" => "!issue.assignee" }
+      No assignee
+      - if can?(current_user, :admin_issue, @project)
+        \-
+        %a.js-assign-yourself{ href: "#" }
+          assign yourself
+    %a.author_link.bold{ ":href" => "'#{root_url}' + issue.assignee.username",
+      "v-if" => "issue.assignee" }
+      %img.avatar.avatar-inline.s32{ ":src" => "issue.assignee.avatar",
+        width: "32" }
+      %span.author
+        {{ issue.assignee.name }}
+      %span.username
+        = precede "@" do
+          {{ issue.assignee.username }}
+  - if can?(current_user, :admin_issue, @project)
+    .selectbox.hide-collapsed
+      %input{ type: "hidden",
+        name: "issue[assignee_id]",
+        id: "issue_assignee_id",
+        ":value" => "issue.assignee.id",
+        "v-if" => "issue.assignee" }
+      .dropdown
+        %button.dropdown-menu-toggle.js-user-search.js-author-search.js-issue-board-sidebar{ type: "button", data: { toggle: "dropdown", field_name: "issue[assignee_id]", first_user: (current_user.username if current_user), current_user: "true", project_id: @project.id, null_user: "true" },
+          ":data-issuable-id" => "issue.id",
+          ":data-issue-update" => "'#{namespace_project_issues_path(@project.namespace, @project)}/' + issue.id + '.json'" }
+          Select assignee
+          = icon("chevron-down")
+        .dropdown-menu.dropdown-menu-user.dropdown-menu-selectable.dropdown-menu-author
+          = dropdown_title("Assign to")
+          = dropdown_filter("Search users")
+          = dropdown_content
+          = dropdown_loading
diff --git a/app/views/projects/boards/components/sidebar/_due_date.html.haml b/app/views/projects/boards/components/sidebar/_due_date.html.haml
new file mode 100644
index 00000000000..c7da1d0d4ac
--- /dev/null
+++ b/app/views/projects/boards/components/sidebar/_due_date.html.haml
@@ -0,0 +1,32 @@
+.block.due_date
+  .title
+    Due date
+    = icon("spinner spin", class: "block-loading")
+    - if can?(current_user, :admin_issue, @project)
+      = link_to "Edit", "#", class: "edit-link pull-right"
+  .value
+    .value-content
+      %span.no-value{ "v-if" => "!issue.dueDate" }
+        No due date
+      %span.bold{ "v-if" => "issue.dueDate" }
+        {{ issue.dueDate | due-date }}
+      - if can?(current_user, :admin_issue, @project)
+        %span.no-value.js-remove-due-date-holder{ "v-if" => "issue.dueDate" }
+          \-
+          %a.js-remove-due-date{ href: "#", role: "button" }
+            remove due date
+  - if can?(current_user, :admin_issue, @project)
+    .selectbox
+      %input{ type: "hidden",
+        name: "issue[due_date]",
+        ":value" => "issue.dueDate" }
+      .dropdown
+        %button.dropdown-menu-toggle.js-due-date-select.js-issue-boards-due-date{ type: 'button',
+          data: { toggle: 'dropdown', field_name: "issue[due_date]", ability_name: "issue" },
+          ":data-issue-update" => "'#{namespace_project_issues_path(@project.namespace, @project)}/' + issue.id + '.json'" }
+          %span.dropdown-toggle-text Due date
+          = icon('chevron-down')
+        .dropdown-menu.dropdown-menu-due-date
+          = dropdown_title('Due date')
+          = dropdown_content do
+            .js-due-date-calendar
diff --git a/app/views/projects/boards/components/sidebar/_labels.html.haml b/app/views/projects/boards/components/sidebar/_labels.html.haml
new file mode 100644
index 00000000000..ce68e5e1998
--- /dev/null
+++ b/app/views/projects/boards/components/sidebar/_labels.html.haml
@@ -0,0 +1,30 @@
+.block.labels
+  .title
+    Labels
+    = icon("spinner spin", class: "block-loading")
+    - if can?(current_user, :admin_issue, @project)
+      = link_to "Edit", "#", class: "edit-link pull-right"
+  .value.issuable-show-labels
+    %span.no-value{ "v-if" => "issue.labels && issue.labels.length === 0" }
+      None
+    %a{ href: "#",
+      "v-for" => "label in issue.labels" }
+      %span.label.color-label.has-tooltip{ ":style" => "{ backgroundColor: label.color, color: label.textColor }" }
+        {{ label.title }}
+  - if can?(current_user, :admin_issue, @project)
+    .selectbox
+      %input{ type: "hidden",
+        name: "issue[label_names][]",
+        "v-for" => "label in issue.labels",
+        ":value" => "label.id" }
+      .dropdown
+        %button.dropdown-menu-toggle.js-label-select.js-multiselect.js-issue-board-sidebar{ type: "button",
+          data: { toggle: "dropdown", field_name: "issue[label_names][]", show_no: "true", show_any: "true", project_id: @project.id, labels: namespace_project_labels_path(@project.namespace, @project, :json), namespace_path: @project.try(:namespace).try(:path), project_path: @project.try(:path) },
+          ":data-issue-update" => "'#{namespace_project_issues_path(@project.namespace, @project)}/' + issue.id + '.json'" }
+          %span.dropdown-toggle-text
+            Label
+          = icon('chevron-down')
+        .dropdown-menu.dropdown-select.dropdown-menu-paging.dropdown-menu-labels.dropdown-menu-selectable
+          = render partial: "shared/issuable/label_page_default"
+          - if can? current_user, :admin_label, @project and @project
+            = render partial: "shared/issuable/label_page_create"
diff --git a/app/views/projects/boards/components/sidebar/_milestone.html.haml b/app/views/projects/boards/components/sidebar/_milestone.html.haml
new file mode 100644
index 00000000000..3cd20d1c0f7
--- /dev/null
+++ b/app/views/projects/boards/components/sidebar/_milestone.html.haml
@@ -0,0 +1,28 @@
+.block.milestone
+  .title
+    Milestone
+    = icon("spinner spin", class: "block-loading")
+    - if can?(current_user, :admin_issue, @project)
+      = link_to "Edit", "#", class: "edit-link pull-right"
+  .value
+    %span.no-value{ "v-if" => "!issue.milestone" }
+      None
+    %span.bold.has-tooltip{ "v-if" => "issue.milestone" }
+      {{ issue.milestone.title }}
+  - if can?(current_user, :admin_issue, @project)
+    .selectbox
+      %input{ type: "hidden",
+        ":value" => "issue.milestone.id",
+        name: "issue[milestone_id]",
+        "v-if" => "issue.milestone" }
+      .dropdown
+        %button.dropdown-menu-toggle.js-milestone-select.js-issue-board-sidebar{ type: "button", data: { toggle: "dropdown", show_no: "true", field_name: "issue[milestone_id]", project_id: @project.id, milestones: namespace_project_milestones_path(@project.namespace, @project, :json), ability_name: "issue", use_id: "true" },
+          ":data-issuable-id" => "issue.id",
+          ":data-issue-update" => "'#{namespace_project_issues_path(@project.namespace, @project)}/' + issue.id + '.json'" }
+          Milestone
+          = icon("chevron-down")
+        .dropdown-menu.dropdown-select.dropdown-menu-selectable
+          = dropdown_title("Assignee milestone")
+          = dropdown_filter("Search milestones")
+          = dropdown_content
+          = dropdown_loading
diff --git a/app/views/projects/boards/components/sidebar/_notifications.html.haml b/app/views/projects/boards/components/sidebar/_notifications.html.haml
new file mode 100644
index 00000000000..21c9563e9db
--- /dev/null
+++ b/app/views/projects/boards/components/sidebar/_notifications.html.haml
@@ -0,0 +1,11 @@
+- if current_user
+  .block.light.subscription{ ":data-url" => "'#{namespace_project_issues_path(@project.namespace, @project)}/' + issue.id + '/toggle_subscription'" }
+    .title
+      Notifications
+    %button.btn.btn-block.btn-default.js-subscribe-button.issuable-subscribe-button.hide-collapsed{ type: "button" }
+      {{ issue.subscribed ? 'Unsubscribe' : 'Subscribe' }}
+    .subscription-status{ ":data-status" => "issue.subscribed ? 'subscribed' : 'unsubscribed'" }
+      .unsubscribed{ "v-show" => "!issue.subscribed" }
+        You're not receiving notifications from this thread.
+      .subscribed{ "v-show" => "issue.subscribed" }
+        You're receiving notifications because you're subscribed to this thread.
diff --git a/app/views/projects/boards/index.html.haml b/app/views/projects/boards/index.html.haml
index 885f8e34b55..29c9a43a0c1 100644
--- a/app/views/projects/boards/index.html.haml
+++ b/app/views/projects/boards/index.html.haml
@@ -10,7 +10,9 @@
 
 = render 'shared/issuable/filter', type: :boards
 
-.boards-list#board-app{ "v-cloak" => true, data: board_data }
-  .boards-app-loading.text-center{ "v-if" => "loading" }
-    = icon("spinner spin")
-  = render "projects/boards/components/board"
+#board-app.boards-app{ "v-cloak" => true, data: board_data }
+  .boards-list{ ":class" => "{ 'is-compact': detailIssueVisible }" }
+    .boards-app-loading.text-center{ "v-if" => "loading" }
+      = icon("spinner spin")
+    = render "projects/boards/components/board"
+  = render "projects/boards/components/sidebar"
diff --git a/app/views/projects/boards/show.html.haml b/app/views/projects/boards/show.html.haml
index 885f8e34b55..29c9a43a0c1 100644
--- a/app/views/projects/boards/show.html.haml
+++ b/app/views/projects/boards/show.html.haml
@@ -10,7 +10,9 @@
 
 = render 'shared/issuable/filter', type: :boards
 
-.boards-list#board-app{ "v-cloak" => true, data: board_data }
-  .boards-app-loading.text-center{ "v-if" => "loading" }
-    = icon("spinner spin")
-  = render "projects/boards/components/board"
+#board-app.boards-app{ "v-cloak" => true, data: board_data }
+  .boards-list{ ":class" => "{ 'is-compact': detailIssueVisible }" }
+    .boards-app-loading.text-center{ "v-if" => "loading" }
+      = icon("spinner spin")
+    = render "projects/boards/components/board"
+  = render "projects/boards/components/sidebar"
diff --git a/app/views/shared/icons/_icon_close.svg b/app/views/shared/icons/_icon_close.svg
new file mode 100644
index 00000000000..9d62012518b
--- /dev/null
+++ b/app/views/shared/icons/_icon_close.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 15 15"><path d="M9,7.5l5.83-5.91a.48.48,0,0,0,0-.69L14.11.15a.46.46,0,0,0-.68,0l-5.93,6L1.57.15a.46.46,0,0,0-.68,0L.15.9a.48.48,0,0,0,0,.69L6,7.5.15,13.41a.48.48,0,0,0,0,.69l.74.75a.46.46,0,0,0,.68,0l5.93-6,5.93,6a.46.46,0,0,0,.68,0l.74-.75a.48.48,0,0,0,0-.69Z"/></svg>
\ No newline at end of file
diff --git a/spec/controllers/projects/boards/issues_controller_spec.rb b/spec/controllers/projects/boards/issues_controller_spec.rb
index da59642f24d..cbe0417a4a7 100644
--- a/spec/controllers/projects/boards/issues_controller_spec.rb
+++ b/spec/controllers/projects/boards/issues_controller_spec.rb
@@ -21,9 +21,11 @@ describe Projects::Boards::IssuesController do
     context 'with valid list id' do
       it 'returns issues that have the list label applied' do
         johndoe = create(:user, avatar: fixture_file_upload(File.join(Rails.root, 'spec/fixtures/dk.png')))
+        issue = create(:labeled_issue, project: project, labels: [planning])
         create(:labeled_issue, project: project, labels: [planning])
-        create(:labeled_issue, project: project, labels: [development])
+        create(:labeled_issue, project: project, labels: [development], due_date: Date.tomorrow)
         create(:labeled_issue, project: project, labels: [development], assignee: johndoe)
+        issue.subscribe(johndoe)
 
         list_issues user: user, board: board, list: list2
 
diff --git a/spec/features/boards/new_issue_spec.rb b/spec/features/boards/new_issue_spec.rb
index 67d6da5f39a..760a8967123 100644
--- a/spec/features/boards/new_issue_spec.rb
+++ b/spec/features/boards/new_issue_spec.rb
@@ -66,6 +66,21 @@ describe 'Issue Boards new issue', feature: true, js: true do
         expect(page).to have_content('1')
       end
     end
+
+    it 'shows sidebar when creating new issue' do
+      page.within(first('.board')) do
+        find('.board-issue-count-holder .btn').click
+      end
+
+      page.within(first('.board-new-issue-form')) do
+        find('.form-control').set('bug')
+        click_button 'Submit issue'
+      end
+
+      wait_for_vue_resource
+
+      expect(page).to have_selector('.issue-boards-sidebar')
+    end
   end
 
   context 'unauthorized user' do
diff --git a/spec/features/boards/sidebar_spec.rb b/spec/features/boards/sidebar_spec.rb
new file mode 100644
index 00000000000..f160052a844
--- /dev/null
+++ b/spec/features/boards/sidebar_spec.rb
@@ -0,0 +1,312 @@
+require 'rails_helper'
+
+describe 'Issue Boards', feature: true, js: true do
+  include WaitForAjax
+  include WaitForVueResource
+
+  let(:project)     { create(:empty_project, :public) }
+  let(:board)       { create(:board, project: project) }
+  let(:user)        { create(:user) }
+  let!(:label)      { create(:label, project: project) }
+  let!(:label2)     { create(:label, project: project) }
+  let!(:milestone)  { create(:milestone, project: project) }
+  let!(:issue2)     { create(:labeled_issue, project: project, assignee: user, milestone: milestone, labels: [label]) }
+  let!(:issue)      { create(:issue, project: project) }
+
+  before do
+    project.team << [user, :master]
+
+    login_as(user)
+
+    visit namespace_project_board_path(project.namespace, project, board)
+    wait_for_vue_resource
+  end
+
+  it 'shows sidebar when clicking issue' do
+    page.within(first('.board')) do
+      first('.card').click
+    end
+
+    expect(page).to have_selector('.issue-boards-sidebar')
+  end
+
+  it 'closes sidebar when clicking issue' do
+    page.within(first('.board')) do
+      first('.card').click
+    end
+
+    expect(page).to have_selector('.issue-boards-sidebar')
+
+    page.within(first('.board')) do
+      first('.card').click
+    end
+
+    expect(page).not_to have_selector('.issue-boards-sidebar')
+  end
+
+  it 'closes sidebar when clicking close button' do
+    page.within(first('.board')) do
+      first('.card').click
+    end
+
+    expect(page).to have_selector('.issue-boards-sidebar')
+
+    find('.gutter-toggle').click
+
+    expect(page).not_to have_selector('.issue-boards-sidebar')
+  end
+
+  it 'shows issue details when sidebar is open' do
+    page.within(first('.board')) do
+      first('.card').click
+    end
+
+    page.within('.issue-boards-sidebar') do
+      expect(page).to have_content(issue.title)
+      expect(page).to have_content(issue.to_reference)
+    end
+  end
+
+  context 'assignee' do
+    it 'updates the issues assignee' do
+      page.within(first('.board')) do
+        first('.card').click
+      end
+
+      page.within('.assignee') do
+        click_link 'Edit'
+
+        wait_for_ajax
+
+        page.within('.dropdown-menu-user') do
+          click_link user.name
+
+          wait_for_vue_resource
+        end
+
+        expect(page).to have_content(user.name)
+      end
+
+      page.within(first('.board')) do
+        page.within(first('.card')) do
+          expect(page).to have_selector('.avatar')
+        end
+      end
+    end
+
+    it 'removes the assignee' do
+      page.within(first('.board')) do
+        find('.card:nth-child(2)').click
+      end
+
+      page.within('.assignee') do
+        click_link 'Edit'
+
+        wait_for_ajax
+
+        page.within('.dropdown-menu-user') do
+          click_link 'Unassigned'
+
+          wait_for_vue_resource
+        end
+
+        expect(page).to have_content('No assignee')
+      end
+
+      page.within(first('.board')) do
+        page.within(find('.card:nth-child(2)')) do
+          expect(page).not_to have_selector('.avatar')
+        end
+      end
+    end
+
+    it 'assignees to current user' do
+      page.within(first('.board')) do
+        first('.card').click
+      end
+
+      page.within('.assignee') do
+        click_link 'assign yourself'
+
+        wait_for_vue_resource
+
+        expect(page).to have_content(user.name)
+      end
+
+      page.within(first('.board')) do
+        page.within(first('.card')) do
+          expect(page).to have_selector('.avatar')
+        end
+      end
+    end
+  end
+
+  context 'milestone' do
+    it 'adds a milestone' do
+      page.within(first('.board')) do
+        first('.card').click
+      end
+
+      page.within('.milestone') do
+        click_link 'Edit'
+
+        wait_for_ajax
+
+        click_link milestone.title
+
+        wait_for_vue_resource
+
+        page.within('.value') do
+          expect(page).to have_content(milestone.title)
+        end
+      end
+    end
+
+    it 'removes a milestone' do
+      page.within(first('.board')) do
+        find('.card:nth-child(2)').click
+      end
+
+      page.within('.milestone') do
+        click_link 'Edit'
+
+        wait_for_ajax
+
+        click_link "No Milestone"
+
+        wait_for_vue_resource
+
+        page.within('.value') do
+          expect(page).not_to have_content(milestone.title)
+        end
+      end
+    end
+  end
+
+  context 'due date' do
+    it 'updates due date' do
+      page.within(first('.board')) do
+        first('.card').click
+      end
+
+      page.within('.due_date') do
+        click_link 'Edit'
+
+        click_link Date.today.day
+
+        wait_for_vue_resource
+
+        expect(page).to have_content(Date.today.to_s(:medium))
+      end
+    end
+  end
+
+  context 'labels' do
+    it 'adds a single label' do
+      page.within(first('.board')) do
+        first('.card').click
+      end
+
+      page.within('.labels') do
+        click_link 'Edit'
+
+        wait_for_ajax
+
+        click_link label.title
+
+        wait_for_vue_resource
+
+        find('.dropdown-menu-close-icon').click
+
+        page.within('.value') do
+          expect(page).to have_selector('.label', count: 1)
+          expect(page).to have_content(label.title)
+        end
+      end
+
+      page.within(first('.board')) do
+        page.within(first('.card')) do
+          expect(page).to have_selector('.label', count: 1)
+          expect(page).to have_content(label.title)
+        end
+      end
+    end
+
+    it 'adds a multiple labels' do
+      page.within(first('.board')) do
+        first('.card').click
+      end
+
+      page.within('.labels') do
+        click_link 'Edit'
+
+        wait_for_ajax
+
+        click_link label.title
+        click_link label2.title
+
+        wait_for_vue_resource
+
+        find('.dropdown-menu-close-icon').click
+
+        page.within('.value') do
+          expect(page).to have_selector('.label', count: 2)
+          expect(page).to have_content(label.title)
+          expect(page).to have_content(label2.title)
+        end
+      end
+
+      page.within(first('.board')) do
+        page.within(first('.card')) do
+          expect(page).to have_selector('.label', count: 2)
+          expect(page).to have_content(label.title)
+          expect(page).to have_content(label2.title)
+        end
+      end
+    end
+
+    it 'removes a label' do
+      page.within(first('.board')) do
+        find('.card:nth-child(2)').click
+      end
+
+      page.within('.labels') do
+        click_link 'Edit'
+
+        wait_for_ajax
+
+        click_link label.title
+
+        wait_for_vue_resource
+
+        find('.dropdown-menu-close-icon').click
+
+        page.within('.value') do
+          expect(page).to have_selector('.label', count: 0)
+          expect(page).not_to have_content(label.title)
+        end
+      end
+
+      page.within(first('.board')) do
+        page.within(find('.card:nth-child(2)')) do
+          expect(page).not_to have_selector('.label', count: 1)
+          expect(page).not_to have_content(label.title)
+        end
+      end
+    end
+  end
+
+  context 'subscription' do
+    it 'changes issue subscription' do
+      page.within(first('.board')) do
+        first('.card').click
+      end
+
+      page.within('.subscription') do
+        click_button 'Subscribe'
+
+        expect(page).to have_content("You're receiving notifications because you're subscribed to this thread.")
+      end
+    end
+  end
+end
diff --git a/spec/fixtures/api/schemas/issue.json b/spec/fixtures/api/schemas/issue.json
index 532ebb9640e..77f2bcee1f3 100644
--- a/spec/fixtures/api/schemas/issue.json
+++ b/spec/fixtures/api/schemas/issue.json
@@ -9,6 +9,7 @@
     "iid": { "type": "integer" },
     "title": { "type": "string" },
     "confidential": { "type": "boolean" },
+    "due_date": { "type": ["date", "null"] },
     "labels": {
       "type": "array",
       "items": {
@@ -42,7 +43,8 @@
       "name": { "type": "string" },
       "username": { "type": "string" },
       "avatar_url": { "type": "uri" }
-    }
+    },
+    "subscribed": { "type": ["boolean", "null"] }
   },
   "additionalProperties": false
 }