1 files changed, 39 insertions, 1 deletions
diff --git a/app/controllers/concerns/issuable_collections.rb b/app/controllers/concerns/issuable_collections.rb
index b43b2c5621f..23909bd2d39 100644
--- a/app/controllers/concerns/issuable_collections.rb
+++ b/app/controllers/concerns/issuable_collections.rb
@@ -15,7 +15,17 @@ module IssuableCollections
   end
 
   def merge_requests_collection
-    merge_requests_finder.execute.preload(:source_project, :target_project, :author, :assignee, :labels, :milestone, :head_pipeline, target_project: :namespace, merge_request_diff: :merge_request_diff_commits)
+    merge_requests_finder.execute.preload(
+      :source_project,
+      :target_project,
+      :author,
+      :assignee,
+      :labels,
+      :milestone,
+      head_pipeline: :project,
+      target_project: :namespace,
+      merge_request_diff: :merge_request_diff_commits
+    )
   end
 
   def issues_finder
@@ -26,6 +36,34 @@ module IssuableCollections
     @merge_requests_finder ||= issuable_finder_for(MergeRequestsFinder)
   end
 
+  def redirect_out_of_range(relation, total_pages)
+    return false if total_pages.zero?
+
+    out_of_range = relation.current_page > total_pages
+
+    if out_of_range
+      redirect_to(url_for(params.merge(page: total_pages, only_path: true)))
+    end
+
+    out_of_range
+  end
+
+  def issues_page_count(relation)
+    page_count_for_relation(relation, issues_finder.row_count)
+  end
+
+  def merge_requests_page_count(relation)
+    page_count_for_relation(relation, merge_requests_finder.row_count)
+  end
+
+  def page_count_for_relation(relation, row_count)
+    limit = relation.limit_value.to_f
+
+    return 1 if limit.zero?
+
+    (row_count.to_f / limit).ceil
+  end
+
   def issuable_finder_for(finder_class)
     finder_class.new(current_user, filter_params)
   end