1 files changed, 17 insertions, 0 deletions
diff --git a/lib/gitlab/global_id.rb b/lib/gitlab/global_id.rb
index cc82b6c5897..e8a6006dce1 100644
--- a/lib/gitlab/global_id.rb
+++ b/lib/gitlab/global_id.rb
@@ -2,6 +2,8 @@
 
 module Gitlab
   module GlobalId
+    CoerceError = Class.new(ArgumentError)
+
     def self.build(object = nil, model_name: nil, id: nil, params: nil)
       if object
         model_name ||= object.class.name
@@ -10,5 +12,20 @@ module Gitlab
 
       ::URI::GID.build(app: GlobalID.app, model_name: model_name, model_id: id, params: params)
     end
+
+    def self.as_global_id(value, model_name: nil)
+      case value
+      when GlobalID
+        value
+      when URI::GID
+        GlobalID.new(value)
+      when Integer
+        raise CoerceError, 'Cannot coerce Integer' unless model_name.present?
+
+        GlobalID.new(::Gitlab::GlobalId.build(model_name: model_name, id: value))
+      else
+        raise CoerceError, "Invalid ID. Cannot coerce instances of #{value.class}"
+      end
+    end
   end
 end