1 files changed, 26 insertions, 0 deletions
diff --git a/lib/gitlab/graphql/markdown_field.rb b/lib/gitlab/graphql/markdown_field.rb
new file mode 100644
index 00000000000..7be6810f7ba
--- /dev/null
+++ b/lib/gitlab/graphql/markdown_field.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Graphql
+    module MarkdownField
+      extend ActiveSupport::Concern
+
+      prepended do
+        def self.markdown_field(name, **kwargs)
+          if kwargs[:resolver].present? || kwargs[:resolve].present?
+            raise ArgumentError, 'Only `method` is allowed to specify the markdown field'
+          end
+
+          method_name = kwargs.delete(:method) || name.to_s.sub(/_html$/, '')
+          kwargs[:resolve] = Gitlab::Graphql::MarkdownField::Resolver.new(method_name.to_sym).proc
+
+          kwargs[:description] ||= "The GitLab Flavored Markdown rendering of `#{method_name}`"
+          # Adding complexity to rendered notes since that could cause queries.
+          kwargs[:complexity] ||= 5
+
+          field name, GraphQL::STRING_TYPE, **kwargs
+        end
+      end
+    end
+  end
+end