Ruby-on-rails Rails 错误：无法批量分配受保护的属性：interest_ids？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/10560458/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Rails Error: Can't mass-assign protected attributes: interest_ids?
提问by js111
Im working with a multistep form (using Wicked gem). In the first couple steps of the form i am editing the user model and those steps work fine.. Then I attempt the "interests" model which has a HABTM relationship with the user model. However i get this error:
我使用多步表单（使用 Wicked gem）。在表单的前几个步骤中，我正在编辑用户模型，这些步骤工作正常。然后我尝试使用与用户模型具有 HABTM 关系的“兴趣”模型。但是我收到这个错误：
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
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
Heres the view:
这是视图：
<%= 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 %>
Any ideas? Thanks!
有任何想法吗？谢谢！
回答by Mischa
You can get rid of this error by adding this to your user model:
您可以通过将其添加到您的用户模型来消除此错误：
attr_accessible :interest_ids
Without this the interest_idsattribute is protected against mass assignmentand when you try to assign values to it anyway an exception is thrown.
如果没有这个，该interest_ids属性将受到保护以防止大量分配，并且当您尝试为其分配值时，无论如何都会引发异常。
