在Rails 4中提交嵌套属性时，未授权的参数，has_many关联表单 [英] Unpermitted parameter in Rails 4 when submitted nested attributes, has_many associated form

问题描述

我有两个模型（ lead which has_many：quote_metals and accepts_nested_attributes_for：quote_metals 和 quote_metal 其中 belongs_to：lead ）。

我试图将以表单提交的信息写入不同的数据表。应该只有一个前导和多个（没有确切数字）的quote_metals。我收到一个错误，说：不允许的参数：quote_metal 。

这里是参数：

由LeadsController处理＃create as html
参数：{utf8=>✓，authenticity_token=> h5iBI7teODFFXRk91puydlr4UmC9EhU5aR9ul2D0u4STFp68GV0wOgb / I43Ukga2MHjLWg1ZnbPeLwuLmMxrkw ==，lead=> {name=>Biggie，email=>[e-mail]，...，note=& asdf，quote_metal=> [{metal=>iron，weight=>1，unit=>pounds}，{metal=& commit=>提交}


这是我的控制器：

  class LeadsController< ApplicationController 
 
 def index 
 @lead = Lead.new 
 @quote_metal = @ lead.quote_metals.build 
 end 
 
 def create 
 #raise params.inspect 
 @lead = Lead.create！（lead_params）
 end 
 
 def show 
 end 
 
 
 private 
 
 def lead_params 
 params.require（：lead）.permit（[：name，：email，：phone，：zip，：note，：method，quote_metals_attributes： [：id，：metal，：weight，：unit，：price]]）
 end 
 
 end 
   
 
以下是形式：
 < div class =container> 
< div class =row> 
 
< div class =col-md-6> 
 
<％= form_for @lead，class：'form-horizo​​ntal'do | f | ％> 
< div class =form-group> 
<％= f.label：name％> 
<％= f.text_field：name，class：form-control％> 
< / div> 
 
< div class =form-group> 
<％= f.label：email％> 
<％= f.email_field：email，class：form-control％> 
< / div> 
 
< div class =form-group> 
<％= f.label：phone％> 
<％= f.telephone_field：phone，class：form-control％> 
< / div> 
 
< div class =form-group> 
<％= f.label：zip％> 
<％= f.text_field：zip，class：form-control％> 
< / div> 
 
< div class =form-group> 
<％= f.label：method％>< br> 
<％= f.select：methods，Lead.methods.map {| k，v | [k.humanize，k]}，{}，
 class：form-control，：required =>真实％> 
< / div> 
 
< div class =form-group> 
<％= f.label：notes％> 
<％= f.text_area：note，class：form-control％> 
< / div> 
 
<％= render：partial => metalLead，local：{f：f}％> 
<％= render：partial => metalLead，local：{f：f}％> 
 
< div class =form-group text-center> 
<％= f.submit提交％> 
< / div> 
<％end％> 
 
 
< / div> 
< / div> 
< / div> 
  
和部分：
 <％= f.fields_for'quote_metal []'，@quote_metal do | ff | ％> 
< div class =form-group> 
<％= ff.label：metal％>< br> 
<％= ff.select：metal，QuoteMetal.metals.map {| k，v | [k.humanize，k]}，{}，
 class：form-control，：required =>真实％> 
< / div> 
<！ -  break  - > 
< div class =form-group> 
<％= ff.label：weight％>< br> 
<％= ff.number_field：weight，：required => true，step：0.1，min：0.0，
 placeholder：'5.00'，class：form-control％& 
< / div> 
<！ -  break  - > 
< div class =form-group> 
<％= ff.label：unit％>< br> 
<％= ff.select：unit，QuoteMetal.units.map {| k，v | [k.humanize，k]}，{}，
 class：form-control，：required =>真实％> 
< / div> 
<％end％> 
  
领导模型正在写入其数据表。我做错了导致quote_metal不写？ 
解决方案
错误在此行<％= f.fields_for'quote_metal []' @quote_metal do | ff | ％> 。应为
 <％= f.fields_for：quote_metals，@quote_metal do | ff | ％> 
  
 
I have two models (lead which has_many :quote_metals and accepts_nested_attributes_for :quote_metals and quote_metal which belongs_to :lead).

I am trying to write the information submitted in the form to the different datatables. There should just be one lead and multiple (no exact number) of quote_metals. I am receiving an error saying that Unpermitted parameter: quote_metal.

Here are the parameters:
Processing by LeadsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"h5iBI7teODFFXRk91puydlr4UmC9EhU5aR9ul2D0u4STFp68GV0wOgb/I43Ukga2MHjLWg1ZnbPeLwuLmMxrkw==", "lead"=>{"name"=>"Biggie", "email"=>"[e-mail]",...., "note"=>"asdf", "quote_metal"=>[{"metal"=>"iron", "weight"=>"1", "unit"=>"pounds"}, {"metal"=>"ore", "weight"=>"4", "unit"=>"KG"}]}, "commit"=>"Submit"}
Here is my controller:
class LeadsController < ApplicationController

      def index
        @lead = Lead.new
        @quote_metal = @lead.quote_metals.build
      end

      def create
        #raise params.inspect
        @lead = Lead.create!(lead_params)
      end

      def show
      end


private

    def lead_params
      params.require(:lead).permit([:name, :email, :phone, :zip, :note, :method, quote_metals_attributes: [:id, :metal, :weight, :unit, :price]])
    end

end
Here is the form:
<div class="container">
  <div class="row">

    <div class="col-md-6">

      <%= form_for @lead, class: 'form-horizontal' do |f| %>
        <div class="form-group">
          <%= f.label :name %>
          <%= f.text_field :name, class: "form-control" %>
        </div>

        <div class="form-group">
          <%= f.label :email %>
          <%= f.email_field :email, class: "form-control" %>
        </div>

        <div class="form-group">
          <%= f.label :phone %>
          <%= f.telephone_field :phone, class: "form-control" %>
        </div>

        <div class="form-group">
          <%= f.label :zip %>
          <%= f.text_field :zip, class: "form-control" %>
        </div>

        <div class="form-group">
            <%= f.label :method %><br>
            <%= f.select :method, Lead.methods.map { |k,v| [k.humanize, k] }, {},
            class: "form-control", :required => true %>
        </div>

        <div class="form-group">
          <%= f.label :notes %>
          <%= f.text_area :note, class: "form-control" %>
        </div>

          <%= render :partial => "metalLead", locals: {f: f} %>
          <%= render :partial => "metalLead", locals: {f: f} %>

        <div class="form-group text-center">
          <%= f.submit "Submit" %>
        </div>
      <% end %>


    </div>
  </div>
</div>
and the partial:
<%= f.fields_for 'quote_metal[]', @quote_metal do |ff| %>
            <div class="form-group">
                  <%= ff.label :metal %><br>
                  <%= ff.select :metal, QuoteMetal.metals.map { |k,v| [k.humanize, k] }, {},
                  class: "form-control", :required => true %>
            </div>
          <!-- break -->
              <div class="form-group">
                  <%= ff.label :weight %><br>
                  <%= ff.number_field :weight, :required => true, step: 0.1, min: 0.0,
                  placeholder: '5.00', class: "form-control" %>
              </div>
          <!-- break -->                
            <div class="form-group">
                <%= ff.label :unit %><br>
                <%= ff.select :unit, QuoteMetal.units.map { |k,v| [k.humanize, k] }, {},
                class: "form-control", :required => true %>
            </div>
<% end %>
The lead model is writing to its datatable. What am I doing wrong causing the quote_metal not to write? 
解决方案
The error is in this line <%= f.fields_for 'quote_metal[]', @quote_metal do |ff| %>. It should be
<%= f.fields_for :quote_metals, @quote_metal do |ff| %>


                        
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