Move Markdown/reference logic from Gitlab::Markdown to Banzai

1 files changed, 22 insertions, 0 deletions

diff --git a/lib/banzai/cross_project_reference.rb b/lib/banzai/cross_project_reference.rb
new file mode 100644
index 00000000000..ba2866e1efa
--- /dev/null
+++ b/lib/banzai/cross_project_reference.rb
@@ -0,0 +1,22 @@
+require 'banzai'
+
+module Banzai
+  # Common methods for ReferenceFilters that support an optional cross-project
+  # reference.
+  module CrossProjectReference
+    # Given a cross-project reference string, get the Project record
+    #
+    # Defaults to value of `context[:project]` if:
+    # * No reference is given OR
+    # * Reference given doesn't exist
+    #
+    # ref - String reference.
+    #
+    # Returns a Project, or nil if the reference can't be found
+    def project_from_ref(ref)
+      return context[:project] unless ref
+
+      Project.find_with_namespace(ref)
+    end
+  end
+end