discourse-custom-wizard/controllers/custom_wizard/admin/custom_fields.rb

class CustomWizard::AdminCustomFieldsController < CustomWizard::AdminController
  def index
    render_json_dump(custom_field_list)
  end
  
  def update
    errors = []
    field_id = nil
    field_data = {}
        
    if saved_field = CustomWizard::CustomField.find(field_params[:id].to_i)
      CustomWizard::CustomField::ATTRS.each do |attr|
        field_data[attr] = saved_field.send(attr)
      end
      field_id = saved_field.id
    end
    
    CustomWizard::CustomField::ATTRS.each do |attr|
      field_data[attr] = field_params[attr]
    end
        
    field = CustomWizard::CustomField.new(field_id, field_data)
    
    PluginStoreRow.transaction do
      unless field.save
        field_errors = field.errors.any? ?
          field.errors.full_messages.join("\n\n") :
          I18n.t("wizard.custom_field.error.save_default", name: field.name)
        errors << field_errors
        raise ActiveRecord::Rollback.new
      end
    end
    
    if errors.any?
      render json: failed_json.merge(messages: errors)
    else
      render json: success_json
    end
  end
  
  def destroy
    params.require(:name)
    
    if CustomWizard::CustomField.destroy(params[:name])
      render json: success_json
    else
      render json: failed_json
    end
  end
  
  private
  
  def field_params
    params.required(:custom_field)
      .permit(
        :id,
        :name,
        :klass,
        :type,
        serializers: []
      )
  end
end