1 files changed, 15 insertions, 11 deletions
diff --git a/app/models/merge_request.rb b/app/models/merge_request.rb
index 8c6905a442d..0cc0b3c2a0e 100644
--- a/app/models/merge_request.rb
+++ b/app/models/merge_request.rb
@@ -137,6 +137,10 @@ class MergeRequest < ActiveRecord::Base
     reference.to_i > 0 && reference.to_i <= Gitlab::Database::MAX_INT_VALUE
   end
 
+  def self.project_foreign_key
+    'target_project_id'
+  end
+
   # Returns all the merge requests from an ActiveRecord:Relation.
   #
   # This method uses a UNION as it usually operates on the result of
@@ -787,21 +791,21 @@ class MergeRequest < ActiveRecord::Base
   def all_pipelines
     return unless source_project
 
-    @all_pipelines ||= begin
-      sha = if persisted?
-              all_commits_sha
-            else
-              diff_head_sha
-            end
-
-      source_project.pipelines.order(id: :desc).
-        where(sha: sha, ref: source_branch)
-    end
+    @all_pipelines ||= source_project.pipelines
+      .where(sha: all_commits_sha, ref: source_branch)
+      .order(id: :desc)
   end
 
   # Note that this could also return SHA from now dangling commits
+  #
   def all_commits_sha
-    merge_request_diffs.flat_map(&:commits_sha).uniq
+    if persisted?
+      merge_request_diffs.flat_map(&:commits_sha).uniq
+    elsif compare_commits
+      compare_commits.to_a.reverse.map(&:id)
+    else
+      [diff_head_sha]
+    end
   end
 
   def merge_commit