1 files changed, 49 insertions, 0 deletions
diff --git a/lib/ci/static_model.rb b/lib/ci/static_model.rb
new file mode 100644
index 00000000000..bb2bdbed495
--- /dev/null
+++ b/lib/ci/static_model.rb
@@ -0,0 +1,49 @@
+# Provides an ActiveRecord-like interface to a model whose data is not persisted to a database.
+module Ci
+  module StaticModel
+    extend ActiveSupport::Concern
+
+    module ClassMethods
+      # Used by ActiveRecord's polymorphic association to set object_id
+      def primary_key
+        'id'
+      end
+
+      # Used by ActiveRecord's polymorphic association to set object_type
+      def base_class
+        self
+      end
+    end
+
+    # Used by AR for fetching attributes
+    #
+    # Pass it along if we respond to it.
+    def [](key)
+      send(key) if respond_to?(key)
+    end
+
+    def to_param
+      id
+    end
+
+    def new_record?
+      false
+    end
+
+    def persisted?
+      false
+    end
+
+    def destroyed?
+      false
+    end
+
+    def ==(other)
+      if other.is_a? ::Ci::StaticModel
+        id == other.id
+      else
+        super
+      end
+    end
+  end
+end