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我有广告系列和消息。广告系列包含许多属于广告系列的讯息和讯息。我为模型设置嵌套属性,并在我看来,我试图创建一个与模型相关的消息。下面的代码:嵌套属性的另一个质量分配问题
class Campaign < ActiveRecord::Base
attr_accessible :message_id, :name, :group_id, :user_id, :messages_attributes
has_many :messages
belongs_to :group
belongs_to :user
accepts_nested_attributes_for :messages
end
class Message < ActiveRecord::Base
attr_accessible :body, :sent, :sent_at
belongs_to :user
belongs_to :campaign
has_many :responses
end
和形式:
= form_for @campaign, :html => {:class => 'form-horizontal'} do |f|
...removed error output code...
%legend
Enter the campaign information
.field
.control-group
%label.control-label
Campaign Name
.controls
= f.text_field :name
= f.collection_select(:group_id, current_user.groups.all, :id, :name, :include_blank => true)
= f.fields_for :message do |m|
= m.text_area :body, :rows => 3
.form-actions= f.submit "#{params[:action] == 'new' ? 'Create New Campaign' : 'Save Campaign'}", :class => 'btn btn-success'
我知道这可能是很简单的东西,但我不断收到以消息的质量分配问题。这里的错误:
ActiveModel::MassAssignmentSecurity::Error (Can't mass-assign protected attributes: message):
app/controllers/campaigns_controller.rb:18:in `update'
终于PARAMS是那些获得从表单创建:
Parameters: {"utf8"=>"✓", "authenticity_token"=>"(removed)", "campaign"=>{"name"=>"Weekly Poker", "group_id"=>"1", "message"=>{"body"=>"s"}}, "commit"=>"Save Campaign", "id"=>"1"}
它应该是'= f.fields_for:messages do | m |',复数。 – veritas1
@ veritas1我曾尝试过,然后页面上的文本框消失...真的很奇怪。任何想法为什么会发生? –
你的控制器里有'@ campaign.messages.build'吗? – veritas1