Merge branch 'ce-issue-10671' into 'master'

CE part for extract EE specific lines from issue.rb

See merge request gitlab-org/gitlab-ce!27481

app/controllers/projects/issues_controller.rb

@@ -10,11 +10,11 @@ class Projects::IssuesController < Projects::ApplicationController
   include SpammableActions
   include RecordUserLastActivity
 
-  def self.issue_except_actions
+  def issue_except_actions
     %i[index calendar new create bulk_update import_csv]
   end
 
-  def self.set_issuables_index_only_actions
+  def set_issuables_index_only_actions
     %i[index calendar]
   end
 
@@ -25,9 +25,9 @@ class Projects::IssuesController < Projects::ApplicationController
 
   before_action :whitelist_query_limiting, only: [:create, :create_merge_request, :move, :bulk_update]
   before_action :check_issues_available!
-  before_action :issue, except: issue_except_actions
+  before_action :issue, unless: ->(c) { c.issue_except_actions.include?(c.action_name.to_sym) }
 
-  before_action :set_issuables_index, only: set_issuables_index_only_actions
+  before_action :set_issuables_index, if: ->(c) { c.set_issuables_index_only_actions.include?(c.action_name.to_sym) }
 
   # Allow write(create) issue
   before_action :authorize_create_issue!, only: [:new, :create]

app/models/concerns/issuable.rb

@@ -128,10 +128,6 @@ module Issuable
       assignees.count > 1
     end
 
-    def milestone_available?
-      project_id == milestone&.project_id || project.ancestors_upto.compact.include?(milestone&.group)
-    end
-
     private
 
     def milestone_is_valid
@@ -277,6 +273,10 @@ module Issuable
     end
   end
 
+  def milestone_available?
+    project_id == milestone&.project_id || project.ancestors_upto.compact.include?(milestone&.group)
+  end
+
   def assignee_or_author?(user)
     author_id == user.id || assignees.exists?(user.id)
   end