module ActionText module Attribute extend ActiveSupport::Concern class_methods do # Provides access to a dependent RichText model that holds the body and attachments for a single named rich text attribute. # This dependent attribute is lazily instantiated and will be auto-saved when it's been changed. Example: # # class Message < ActiveRecord::Base # has_rich_text :content # end # # message = Message.create!(content: "

Funny times!

") # message.content.to_s # => "

Funny times!

" # message.content.body.to_plain_text # => "Funny times!" # # The dependent RichText model will also automatically process attachments links as sent via the Trix-powered editor. # These attachments are associated with the RichText model using Active Storage. # # If you wish to preload the dependent RichText model, you can use the named scope: # # Message.all.with_rich_text_content # Avoids N+1 queries when you just want the body, not the attachments. # Message.all.with_rich_text_content_and_emebds # Avoids N+1 queries when you just want the body and attachments. def has_rich_text(name) class_eval <<-CODE, __FILE__, __LINE__ + 1 def #{name} self.rich_text_#{name} ||= ActionText::RichText.new(name: "#{name}", record: self) end def #{name}=(body) #{name}.body = body end CODE has_one :"rich_text_#{name}", -> { where(name: name) }, class_name: "ActionText::RichText", as: :record, inverse_of: :record, dependent: :destroy scope :"with_rich_text_#{name}", -> { includes("rich_text_#{name}") } scope :"with_rich_text_#{name}_and_embeds", -> { includes("rich_text_#{name}": { embeds_attachments: :blob }) } after_save do public_send(name).save if public_send(name).changed? end end end end end