WIP

app/models/action_text/rich_text.rb

@@ -0,0 +1,9 @@
+class ActionText::RichText < ActiveRecord::Base
+  serialize :body, ActionText::Content
+  
+  has_many_attached :embeds
+
+  after_save do
+    self.embeds_attachments_blobs = body.attachments.map(&:attachable)
+  end
+end

lib/action_text/attribute.rb

@@ -3,16 +3,33 @@ module ActionText
     extend ActiveSupport::Concern
 
     class_methods do
-      def has_rich_text(attribute_name)
-        serialize(attribute_name, ActionText::Content)
+      def has_rich_text(name)
+        class_eval <<-CODE, __FILE__, __LINE__ + 1
+          def #{name}
+            rich_text_#{name}
+          end
 
-        has_many_attached "#{attribute_name}_attachments"
+          def #{name}=(body)
+            #{name}.body = body
+          end
+        CODE
 
-        after_save do
-          blobs = public_send(attribute_name).attachments.map(&:attachable)
-          public_send("#{attribute_name}_attachments_blobs=", blobs)
-        end
-      end
+        has_one :"rich_text_#{name}", -> { where(name: name) }, class_name: "ActionText::RichText", as: :record, inverse_of: :record, dependent: false
+
+        scope :"with_rich_text_#{name}", -> { includes("rich_text_#{name}") }
+      end
+
+
+      # def has_rich_text(attribute_name)
+      #   serialize(attribute_name, ActionText::Content)
+      # 
+      #   has_many_attached "#{attribute_name}_attachments"
+      # 
+      #   after_save do
+      #     blobs = public_send(attribute_name).attachments.map(&:attachable)
+      #     public_send("#{attribute_name}_attachments_blobs=", blobs)
+      #   end
+      # end
     end
   end
 end