Minimum CRUD on Rails

tools_controller.rb

class Admin::ToolsController < AdminController
  expose :tools, ancestor: :company
  expose :tool, attributes: :tool_params

  def create
    if tool.save
      set_flash_success_and_redirect_to admin_tools_path
    else
      render :new
    end
  end

  def update
    if tool.save
      set_flash_success_and_redirect_to admin_tools_path
    else
      render :edit
    end
  end

  def destroy
    if tool.destroy
      set_flash_success_and_redirect_to admin_tools_path
    else
      set_flash_error_and_redirect_to admin_tools_path
    end
  end

  private

  def tool_params
    params.require(:tool).permit(:name)
  end
end