Merge branch 'master' into new-nav-fix-contextual-breadcrumbs

9 files changed, 52 insertions, 13 deletions

diff --git a/app/models/concerns/awardable.rb b/app/models/concerns/awardable.rb
index a7fd0a15f0f..f4f9b037957 100644
--- a/app/models/concerns/awardable.rb
+++ b/app/models/concerns/awardable.rb
@@ -2,7 +2,7 @@ module Awardable
   extend ActiveSupport::Concern
 
   included do
-    has_many :award_emoji, -> { includes(:user).order(:id) }, as: :awardable, dependent: :destroy
+    has_many :award_emoji, -> { includes(:user).order(:id) }, as: :awardable, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
 
     if self < Participable
       # By default we always load award_emoji user association
diff --git a/app/models/concerns/cache_markdown_field.rb b/app/models/concerns/cache_markdown_field.rb
index eb32bf3d32a..95152dcd68c 100644
--- a/app/models/concerns/cache_markdown_field.rb
+++ b/app/models/concerns/cache_markdown_field.rb
@@ -78,7 +78,7 @@ module CacheMarkdownField
   def cached_html_up_to_date?(markdown_field)
     html_field = cached_markdown_fields.html_field(markdown_field)
 
-    cached = !cached_html_for(markdown_field).nil? && !__send__(markdown_field).nil?
+    cached = cached_html_for(markdown_field).present? && __send__(markdown_field).present?
     return false unless cached
 
     markdown_changed = attribute_changed?(markdown_field) || false
diff --git a/app/models/concerns/issuable.rb b/app/models/concerns/issuable.rb
index d178ee4422b..23cb85600da 100644
--- a/app/models/concerns/issuable.rb
+++ b/app/models/concerns/issuable.rb
@@ -30,7 +30,7 @@ module Issuable
     belongs_to :updated_by, class_name: "User"
     belongs_to :last_edited_by, class_name: 'User'
     belongs_to :milestone
-    has_many :notes, as: :noteable, inverse_of: :noteable, dependent: :destroy do
+    has_many :notes, as: :noteable, inverse_of: :noteable, dependent: :destroy do # rubocop:disable Cop/ActiveRecordDependent
       def authors_loaded?
         # We check first if we're loaded to not load unnecessarily.
         loaded? && to_a.all? { |note| note.association(:author).loaded? }
@@ -42,9 +42,9 @@ module Issuable
       end
     end
 
-    has_many :label_links, as: :target, dependent: :destroy
+    has_many :label_links, as: :target, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
     has_many :labels, through: :label_links
-    has_many :todos, as: :target, dependent: :destroy
+    has_many :todos, as: :target, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
 
     has_one :metrics
 
@@ -102,6 +102,14 @@ module Issuable
     def locking_enabled?
       title_changed? || description_changed?
     end
+
+    def allows_multiple_assignees?
+      false
+    end
+
+    def has_multiple_assignees?
+      assignees.count > 1
+    end
   end
 
   module ClassMethods
diff --git a/app/models/concerns/protected_ref.rb b/app/models/concerns/protected_ref.rb
index 47e71c58557..fc6b840f7a8 100644
--- a/app/models/concerns/protected_ref.rb
+++ b/app/models/concerns/protected_ref.rb
@@ -17,7 +17,7 @@ module ProtectedRef
   class_methods do
     def protected_ref_access_levels(*types)
       types.each do |type|
-        has_many :"#{type}_access_levels", dependent: :destroy
+        has_many :"#{type}_access_levels", dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
 
         validates :"#{type}_access_levels", length: { is: 1, message: "are restricted to a single instance per #{self.model_name.human}." }
 
diff --git a/app/models/concerns/routable.rb b/app/models/concerns/routable.rb
index ec7796a9dbb..f5048d17d80 100644
--- a/app/models/concerns/routable.rb
+++ b/app/models/concerns/routable.rb
@@ -4,8 +4,8 @@ module Routable
   extend ActiveSupport::Concern
 
   included do
-    has_one :route, as: :source, autosave: true, dependent: :destroy
-    has_many :redirect_routes, as: :source, autosave: true, dependent: :destroy
+    has_one :route, as: :source, autosave: true, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
+    has_many :redirect_routes, as: :source, autosave: true, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
 
     validates_associated :route
     validates :route, presence: true
@@ -103,8 +103,12 @@ module Routable
   def full_path
     return uncached_full_path unless RequestStore.active?
 
-    key = "routable/full_path/#{self.class.name}/#{self.id}"
-    RequestStore[key] ||= uncached_full_path
+    RequestStore[full_path_key] ||= uncached_full_path
+  end
+
+  def expires_full_path_cache
+    RequestStore.delete(full_path_key) if RequestStore.active?
+    @full_path = nil
   end
 
   def build_full_path
@@ -135,6 +139,10 @@ module Routable
     path_changed? || parent_changed?
   end
 
+  def full_path_key
+    @full_path_key ||= "routable/full_path/#{self.class.name}/#{self.id}"
+  end
+
   def build_full_name
     if parent && name
       parent.human_name + ' / ' + name
diff --git a/app/models/concerns/sortable.rb b/app/models/concerns/sortable.rb
index a155a064032..fdacfa5a194 100644
--- a/app/models/concerns/sortable.rb
+++ b/app/models/concerns/sortable.rb
@@ -5,6 +5,25 @@
 module Sortable
   extend ActiveSupport::Concern
 
+  module DropDefaultScopeOnFinders
+    # Override these methods to drop the `ORDER BY id DESC` default scope.
+    # See http://dba.stackexchange.com/a/110919 for why we do this.
+    %i[find find_by find_by!].each do |meth|
+      define_method meth do |*args, &block|
+        return super(*args, &block) if block
+
+        unordered_relation = unscope(:order)
+
+        # We cannot simply call `meth` on `unscope(:order)`, since that is also
+        # an instance of the same relation class this module is included into,
+        # which means we'd get infinite recursion.
+        # We explicitly use the original implementation to prevent this.
+        original_impl = method(__method__).super_method.unbind
+        original_impl.bind(unordered_relation).call(*args)
+      end
+    end
+  end
+
   included do
     # By default all models should be ordered
     # by created_at field starting from newest
@@ -18,6 +37,10 @@ module Sortable
     scope :order_updated_asc, -> { reorder(updated_at: :asc) }
     scope :order_name_asc, -> { reorder(name: :asc) }
     scope :order_name_desc, -> { reorder(name: :desc) }
+
+    # All queries (relations) on this model are instances of this `relation_klass`.
+    relation_klass = relation_delegate_class(ActiveRecord::Relation)
+    relation_klass.prepend DropDefaultScopeOnFinders
   end
 
   module ClassMethods
diff --git a/app/models/concerns/spammable.rb b/app/models/concerns/spammable.rb
index 647a6cad3d7..bd75f25a210 100644
--- a/app/models/concerns/spammable.rb
+++ b/app/models/concerns/spammable.rb
@@ -8,7 +8,7 @@ module Spammable
   end
 
   included do
-    has_one :user_agent_detail, as: :subject, dependent: :destroy
+    has_one :user_agent_detail, as: :subject, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
 
     attr_accessor :spam
     attr_accessor :spam_log
diff --git a/app/models/concerns/subscribable.rb b/app/models/concerns/subscribable.rb
index f60a0f8f438..274b38a7708 100644
--- a/app/models/concerns/subscribable.rb
+++ b/app/models/concerns/subscribable.rb
@@ -9,7 +9,7 @@ module Subscribable
   extend ActiveSupport::Concern
 
   included do
-    has_many :subscriptions, dependent: :destroy, as: :subscribable
+    has_many :subscriptions, dependent: :destroy, as: :subscribable # rubocop:disable Cop/ActiveRecordDependent
   end
 
   def subscribed?(user, project = nil)
diff --git a/app/models/concerns/time_trackable.rb b/app/models/concerns/time_trackable.rb
index 9cf83440784..b517ddaebd7 100644
--- a/app/models/concerns/time_trackable.rb
+++ b/app/models/concerns/time_trackable.rb
@@ -18,7 +18,7 @@ module TimeTrackable
     validates :time_estimate, numericality: { message: 'has an invalid format' }, allow_nil: false
     validate  :check_negative_time_spent
 
-    has_many :timelogs, dependent: :destroy
+    has_many :timelogs, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
   end
 
   def spend_time(options)