Move issues index variable setting to a method

This makes it easier to reuse in EE.

app/controllers/concerns/issuable_collections.rb

@@ -10,6 +10,22 @@ module IssuableCollections
 
   private
 
+  def set_issues_index
+    @collection_type    = "Issue"
+    @issues             = issues_collection
+    @issues             = @issues.page(params[:page])
+    @issuable_meta_data = issuable_meta_data(@issues, @collection_type)
+    @total_pages        = issues_page_count(@issues)
+
+    return if redirect_out_of_range(@issues, @total_pages)
+
+    if params[:label_name].present?
+      @labels = LabelsFinder.new(current_user, project_id: @project.id, title: params[:label_name]).execute
+    end
+
+    @users = []
+  end
+
   def issues_collection
     issues_finder.execute.preload(:project, :author, :assignees, :labels, :milestone, project: :namespace)
   end

app/controllers/projects/issues_controller.rb

@@ -10,6 +10,7 @@ class Projects::IssuesController < Projects::ApplicationController
 
   before_action :check_issues_available!
   before_action :issue, except: [:index, :new, :create, :bulk_update]
+  before_action :set_issues_index, only: [:index]
 
   # Allow write(create) issue
   before_action :authorize_create_issue!, only: [:new, :create]
@@ -23,20 +24,6 @@ class Projects::IssuesController < Projects::ApplicationController
   respond_to :html
 
   def index
-    @collection_type    = "Issue"
-    @issues             = issues_collection
-    @issues             = @issues.page(params[:page])
-    @issuable_meta_data = issuable_meta_data(@issues, @collection_type)
-    @total_pages        = issues_page_count(@issues)
-
-    return if redirect_out_of_range(@issues, @total_pages)
-
-    if params[:label_name].present?
-      @labels = LabelsFinder.new(current_user, project_id: @project.id, title: params[:label_name]).execute
-    end
-
-    @users = []
-
     if params[:assignee_id].present?
       assignee = User.find_by_id(params[:assignee_id])
       @users.push(assignee) if assignee