嵌套属性未允许的参数
我有一个Bill
对象,它有很多Due
对象。该Due
对象也属于Person
。我想要一个可以在一个页面中创建Bill
及其子项的表单Dues
。我正在尝试使用嵌套属性创建表单,类似于此Railscast中的表单。
相关代码如下:
due.rb
class Due < ActiveRecord::Base belongs_to :person belongs_to :billend
bill.rb
class Bill < ActiveRecord::Base has_many :dues, :dependent => :destroy accepts_nested_attributes_for :dues, :allow_destroy => trueend
bills_controller.rb
# GET /bills/new def new @bill = Bill.new 3.times { @bill.dues.build } end
票据/ _form.html.erb
<%= form_for(@bill) do |f| %> <div class="field"> <%= f.label :company %><br /> <%= f.text_field :company %> </div> <div class="field"> <%= f.label :month %><br /> <%= f.text_field :month %> </div> <div class="field"> <%= f.label :year %><br /> <%= f.number_field :year %> </div> <div class="actions"> <%= f.submit %> </div> <%= f.fields_for :dues do |builder| %> <%= render 'due_fields', :f => builder %> <% end %> <% end %>
票据/ _due_fields.html.erb
<div> <%= f.label :amount, "Amount" %> <%= f.text_field :amount %> <br> <%= f.label :person_id, "Renter" %> <%= f.text_field :person_id %></div>
更新到bills_controller.rb 这有效!
def bill_params params .require(:bill) .permit(:company, :month, :year, dues_attributes: [:amount, :person_id]) end
在页面上呈现正确的字段(尽管还没有下拉列表Person
),并且提交成功。但是,没有子项会被保存到数据库中,并且服务器日志中会抛出错误:
Unpermitted parameters: dues_attributes
在错误发生之前,日志显示如下:
Started POST "/bills" for 127.0.0.1 at 2013-04-10 00:16:37 -0700Processing by BillsController#create as HTML<br>Parameters: {"utf8"=>"✓", "authenticity_token"=>"ipxBOLOjx68fwvfmsMG3FecV/q/hPqUHsluBCPN2BeU=", "bill"=>{"company"=>"Comcast", "month"=>"April ", "year"=>"2013", "dues_attributes"=>{"0"=>{"amount"=>"30", "person_id"=>"1"}, "1"=>{"amount"=>"30", "person_id"=>"2"}, "2"=>{"amount"=>"30", "person_id"=>"3"}}}, "commit"=>"Create Bill"}
Rails 4有没有变化?
慕尼黑5688855
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