Gab Social. All are welcome.

app/models/concerns/group_interactions.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module GroupInteractions
+  extend ActiveSupport::Concern
+
+  class_methods do
+
+    def member_map(target_group_ids, account_id)
+      follow_mapping(GroupAccount.where(group_id: target_group_ids, account_id: account_id), :group_id)
+    end
+
+    def admin_map(target_group_ids, account_id)
+        follow_mapping(GroupAccount.where(group_id: target_group_ids, account_id: account_id, role: :admin), :group_id)
+      end
+
+    private
+
+    def follow_mapping(query, field)
+      query.pluck(field).each_with_object({}) { |id, mapping| mapping[id] = true }
+    end
+  end
+
+end