ruby-on-rails - Rails错误: Can't mass-assign protected attributes: interest_ids?

Question

我正在处理多步骤表单(使用Wicked gem)。在表单的前几个步骤中，我正在编辑用户模型，而这些步骤可以正常工作。然后，我尝试与用户模型具有HABTM关系的“兴趣”模型。但是我得到这个错误:

ActiveModel::MassAssignmentSecurity::Error in UserStepsController#update

Can't mass-assign protected attributes: interest_ids
Rails.root: /Users/nelsonkeating/rails_projects/Oreminder1

Application Trace | Framework Trace | Full Trace
app/controllers/user_steps_controller.rb:12:in `update'

user_steps_controller.rb

 class UserStepsController < ApplicationController
  include Wicked::Wizard
  steps :standard, :personal, :interests, :dates 

 def show
   @user = current_user
   render_wizard
 end

 def update
  @user = current_user
  @user.attributes = params[:user]
 render_wizard @user
end

end

这是 View :

<%= render layout: 'form' do |f| %>

<% for interest in Interest.find(:all) %>
 <label class="checkbox">
  <%= check_box_tag "user[interest_ids][]", interest.id, @user.interests.include?(interest) %>
  <%= interest.name %>
 </label>
<% end %>

<% end %>

有任何想法吗？谢谢!

Answer 1

您可以通过将其添加到用户模型中来消除此错误:

attr_accessible :interest_ids

没有此属性， interest_ids属性就不会受到 mass assignment的保护，并且无论如何您尝试为其分配值时都会引发异常。