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This guide assumes you’ve completed the Model and Admin tutorials.
Our Brand model has a name attribute to store the brand name. However it’s missing a description. That’s because we’re going to use Action Text to handle the rich text content.

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Step 1: Add Action Text to the Model

app/models/spree/brand.rb
module Spree
  class Brand < Spree::Base
    # Action text for rich text content
    has_rich_text :description

    # ... other code ...
  end
end
You don’t need to run any migrations, as we won’t be adding any new columns to the spree_brands table. That’s because Action Text stores all the rich text content in a separate table called action_text_rich_texts. You can access the description content in code like this: 
brand.description.to_s
# => "<h1>Hello</h1><p>World</p>"
Or if you prefer plain text: 
brand.description.to_plain_text
# => "Hello World"

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Step 2: Add a WYSIWYG editor to the Admin Dashboard

In the Admin dashboard we want to use a WYSIWYG editor to add formatted text to the brand description. To do this, edit the app/views/spree/admin/brands/_form.html.erb file and add the following code:
app/views/spree/admin/brands/_form.html.erb
<div class="card mb-4">
  <div class="card-body">
    <%= f.spree_text_field :name %>
    <%= f.spree_rich_text_area :description %>
  </div>
</div>
This will render a WYSIWYG editor to the brand description field in the Admin dashboard.

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Step 3: Update permitted parameters in controller

To permit the description attribute to be saved, we need to update the permitted parameters in the controller. file and add the following code:
app/controllers/spree/admin/brands_controller.rb
module Spree
  module Admin
    class BrandsController < ResourceController
      private

      def permitted_resource_params
        params.require(:brand).permit(
          :name,
          :description
        )
      end
    end
  end
end