1 files changed, 32 insertions, 0 deletions
diff --git a/app/graphql/mutations/merge_requests/base.rb b/app/graphql/mutations/merge_requests/base.rb
new file mode 100644
index 00000000000..2149e72e2df
--- /dev/null
+++ b/app/graphql/mutations/merge_requests/base.rb
@@ -0,0 +1,32 @@
+module Mutations
+  module MergeRequests
+    class Base < BaseMutation
+      include Gitlab::Graphql::Authorize::AuthorizeResource
+      include Mutations::ResolvesProject
+
+      argument :project_path, GraphQL::ID_TYPE,
+               required: true,
+               description: "The project the merge request to mutate is in"
+
+      argument :iid, GraphQL::ID_TYPE,
+               required: true,
+               description: "The iid of the merge request to mutate"
+
+      field :merge_request,
+            Types::MergeRequestType,
+            null: true,
+            description: "The merge request after mutation"
+
+      authorize :update_merge_request
+
+      private
+
+      def find_object(project_path:, iid:)
+        project = resolve_project(full_path: project_path)
+        resolver = Resolvers::MergeRequestResolver.new(object: project, context: context)
+
+        resolver.resolve(iid: iid)
+      end
+    end
+  end
+end