Question

In my application, only users with the administrator role may create new users. In the new user form, I have a select box for each of the available roles that may be assigned to new users.

I am hoping to use the after_create callback method to assign the role to the user. How can I access the selected value of the select box in the after_create method?

  def create
    @user = User.new(params[:user])

    respond_to do |format|
      if @user.save
        flash[:notice] = 'User creation successful.'
        format.html { redirect_to @user }
      else
        format.html { render :action => 'new' }
      end
    end
  end

In the user model I have:

  after_create :assign_roles

  def assign_roles
    self.has_role! 'owner', self
    # self.has_role! params[:role]
  end

I receive an error because the model doesn’t know what role is.

Answer 1

You could use attr_accessor to create a virtual attribute and set that attribute as part of your create action.