1 files changed, 71 insertions, 0 deletions
diff --git a/lib/issue_commonality.rb b/lib/issue_commonality.rb
new file mode 100644
index 00000000000..b755936c9c1
--- /dev/null
+++ b/lib/issue_commonality.rb
@@ -0,0 +1,71 @@
+# == IssueCommonality role
+#
+# Contains common functionality shared between Issues and MergeRequests
+#
+# Used by Issue, MergeRequest
+#
+module IssueCommonality
+  extend ActiveSupport::Concern
+
+  included do
+    belongs_to :project
+    belongs_to :author, class_name: "User"
+    belongs_to :assignee, class_name: "User"
+    belongs_to :milestone
+    has_many :notes, as: :noteable, dependent: :destroy
+
+    validates :project, presence: true
+    validates :author, presence: true
+    validates :title, presence: true, length: { within: 0..255 }
+    validates :closed, inclusion: { in: [true, false] }
+
+    scope :opened, where(closed: false)
+    scope :closed, where(closed: true)
+    scope :of_group, ->(group) { where(project_id: group.project_ids) }
+    scope :assigned, ->(u) { where(assignee_id: u.id)}
+    scope :recent, order("created_at DESC")
+
+    delegate :name,
+             :email,
+             to: :author,
+             prefix: true
+
+    delegate :name,
+             :email,
+             to: :assignee,
+             allow_nil: true,
+             prefix: true
+
+    attr_accessor :author_id_of_changes
+  end
+
+  module ClassMethods
+    def search(query)
+      where("title like :query", query: "%#{query}%")
+    end
+  end
+
+  def today?
+    Date.today == created_at.to_date
+  end
+
+  def new?
+    today? && created_at == updated_at
+  end
+
+  def is_assigned?
+    !!assignee_id
+  end
+
+  def is_being_reassigned?
+    assignee_id_changed?
+  end
+
+  def is_being_closed?
+    closed_changed? && closed
+  end
+
+  def is_being_reopened?
+    closed_changed? && !closed
+  end
+end