Add FormFor and InitializeWith

lib/active_interaction/extras.rb

@@ -1,6 +1,9 @@
 require "active_interaction/extras/version"
 
 require 'active_support'
+require 'active_support/core_ext/class/attribute'
+require 'active_support/core_ext/module/concerning'
+
 require 'active_interaction'
 
 module ActiveInteraction
@@ -29,6 +32,49 @@ module Jobs
 
     autoload(:ActiveJob, "active_interaction/extras/active_job")
     autoload(:Sidekiq, "active_interaction/extras/sidekiq")
+
+    concern :FormFor do
+      class_methods do
+        def form_for(field_name)
+          delegate :persisted?, :id, :to_param, to: field_name
+        end
+      end
+    end
+
+    concern :AfterInitialize do
+      include ActiveSupport::Callbacks
+
+      included do
+        define_callbacks :initialize
+      end
+
+      class_methods do
+        def after_initialize(&block)
+          set_callback :initialize, :after, &block
+        end
+      end
+
+      def initialize(...)
+        super
+        run_callbacks :initialize, :after
+      end
+    end
+
+    concern :InitializeWith do
+      include ActiveInteraction::Extras::AfterInitialize
+
+      class_methods do
+        def initialize_with(&block)
+          after_initialize do
+            hash = instance_exec(&block)
+            hash.each do |filter_name, value|
+              public_send "#{filter_name}=", value if !inputs.given?(filter_name)
+            end
+          end
+        end
+      end
+    end
+
   end
 end
 

lib/active_interaction/extras/all.rb

@@ -9,4 +9,9 @@ module ActiveInteraction::Extras::All
   include ActiveInteraction::Extras::ModelFields
   include ActiveInteraction::Extras::RunCallback
   include ActiveInteraction::Extras::StrongParams
+
+  include ActiveInteraction::Extras::FormFor
+  include ActiveInteraction::Extras::AfterInitialize
+  include ActiveInteraction::Extras::InitializeWith
+
 end