ruby-on-rails - Rails 4 嵌套形式和强参数

Question

我无法让 Accepts_nested_attributes_for 在 Rails 4 中使用强参数。这是错误

Processing by CityaddressesController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"Cx9nunLAsHkvo/Z8vKnWFnrub1LpmUgVNdePcQ9VDSQ=", "cityaddress"=>{"st_unit"=>"1", "st_num"=>"1", "st_prefix"=>"E", "name"=>"1", "st_type"=>"ST", "st_postalcode"=>"", "description"=>"", "cityaccount"=>{"name"=>"1", "description"=>"1"}}, "commit"=>"Create Cityaddress"}
  [1m[36mUser Load (0.0ms)[0m  [1mSELECT  `users`.* FROM `users`  WHERE `users`.`id` = 3 LIMIT 1[0m
Unpermitted parameters: cityaccount

这是模型:

class Cityaddress < ActiveRecord::Base
    has_many :cityaccounts
    has_many :license_plates
    accepts_nested_attributes_for :cityaccounts, allow_destroy: true

    def street_address
      return "#{st_unit} #{st_num} #{name} #{st_type} #{st_prefix}"
    end
    def address
      return "#{st_unit}#{st_prefix} #{name} #{st_type} #{st_num} "
    end
end

这是 Controller :

  # GET /cityaddresses/new
  def new
    @cityaddress = Cityaddress.new
    @streets = Street.where("active=1").order("display_order")
    @cityaddress_accounts = @cityaddress.cityaccounts.build
  end

    def cityaddress_params
      params.require(:cityaddress).permit(:st_unit, :st_num, :st_prefix, :name, :st_type, :st_postalcode, :description, cityaccounts_attributes: [:name, :description, :id])
    end 

这是 View :

<%= f.fields_for @cityaddress_accounts do |ff| %>
   <div class="field">
     <%= ff.label :name %>
     <%= ff.text_field :name %><br>
   </div> 
   <div class="field">
     <%= ff.label :description %>
     <%= ff.text_field :description %><br>
   </div>  
<% end %>

我认为这与强参数语法有关？

干杯。

Answer 1

我认为你必须稍微改变一下观点。

尝试改变这个

<%= f.fields_for @cityaddress_accounts do |ff| %>

至

<%= f.fields_for :cityaccounts do |ff| %>