Differences From Trix
This section is still in progress and incomplete. This will be a running list of differences, features, where Rhino has diverged, etc, from Trix.
Custom Attachments
Custom Attachments in Rhino Editor must have a content-type set on them. To do this, go into the Model you are rendering and do the following:
            Ruby
          
          class Mention < ApplicationRecord
  def attachable_content_type
    "application/vnd.active_record.mention"
  end
end
Or using an ActiveModel::Model
            Ruby
          
          class Mention
  include ActiveModel::Model
  include ActiveModel::Attributes
  include GlobalID::Identification
  include ActionText::Attachable
  def attachable_content_type
    "application/vnd.active_record.mention"
  end
end
The reason for this is because sometimes you may want to render an ActiveStorage attachment from your server into Rhino Editor, but don’t want it to go through the default image processing, for example, Mentions.
This is an active choice to break backwards compatibility, but it’s intended to allow for more powerful interactions with custom extensions on TipTap.
For more context, check out this issue: