Ruby on rails 接收未定义的方法“在关联上反映”'；对于NilClass:Class Cocoon Rails 6_Ruby On Rails_Ruby_Cocoon Gem

Ruby on rails 接收未定义的方法“在关联上反映”'；对于NilClass:Class Cocoon Rails 6

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Ruby on rails 接收未定义的方法“在关联上反映”'；对于NilClass:Class Cocoon Rails 6,ruby-on-rails,ruby,cocoon-gem,Ruby On Rails,Ruby,Cocoon Gem,我目前正在使用双嵌套分部将子记录添加到深度嵌套表单中。表单输入显示，但链接到添加关联按钮抛出异常。如何使用“链接到添加关联”按钮访问子表单输入 providers\u controller.rb class ProviderContractsController < ApplicationController before_action :set_provider_contract, only: %i[show edit update destroy] def new @pr

我目前正在使用双嵌套分部将子记录添加到深度嵌套表单中。表单输入显示，但链接到添加关联按钮抛出异常。如何使用“链接到添加关联”按钮访问子表单输入

providers\u controller.rb

class ProviderContractsController < ApplicationController
  before_action :set_provider_contract, only: %i[show edit update destroy]

def new
    @provider_contract = ProviderForm.find(params[:provider_form_id])
    @provider_contract = ProviderContract.new(provider_form_id: @provider.id)
    @provider_contract.build_contract_term
    @provider_contract.contract_term.contract_term_fees.build


  rescue ActiveRecord::RecordNotFound
    redirect_to home_path, notice: 'The provider has been removed or has not been selected'
  end

  private

  # Use callbacks to share common setup or constraints between actions.
  def set_provider_contract
    @provider_contract = ProviderContract.find(params[:id])
  end

  # Never trust parameters from the scary internet, only allow the white list through.
  def provider_contract_params
    params.require(:provider_contract).permit(ProviderContract.attribute_names.map(&:to_sym),

                                              contract_term_attributes: ContractTerm.attribute_names.map(&:to_sym).push( contract_term_fees_attributes: ContractTermFee.attribute_names.map(&:to_sym).push(:id, :_destroy))
  end
end

 <%= simple_form_for(@provider_contract, html: { class: "ui form"}) do |f| %>
    <%= f.error_notification %>
    <%= f.error_notification message: f.object.errors[:base].to_sentence if f.object.errors[:base].present? %>

  <div class="ui tab" data-tab="stage-4">
      <%= f.simple_fields_for :contract_term do |ct| %>
        <%= render 'provider_contracts/partials/contract_term', f: ct %>
      <% end %>
    </div>
<% end %>

class ContractTerm < ApplicationRecord
  belongs_to :provider_contract
  has_many :contract_term_fees, dependent: :destroy


  accepts_nested_attributes_for :contract_term_fees, reject_if: :all_blank, allow_destroy: true
end

class ProviderContractsController


\u form.html.erb
class ProviderContractsController < ApplicationController
  before_action :set_provider_contract, only: %i[show edit update destroy]

def new
    @provider_contract = ProviderForm.find(params[:provider_form_id])
    @provider_contract = ProviderContract.new(provider_form_id: @provider.id)
    @provider_contract.build_contract_term
    @provider_contract.contract_term.contract_term_fees.build


  rescue ActiveRecord::RecordNotFound
    redirect_to home_path, notice: 'The provider has been removed or has not been selected'
  end

  private

  # Use callbacks to share common setup or constraints between actions.
  def set_provider_contract
    @provider_contract = ProviderContract.find(params[:id])
  end

  # Never trust parameters from the scary internet, only allow the white list through.
  def provider_contract_params
    params.require(:provider_contract).permit(ProviderContract.attribute_names.map(&:to_sym),

                                              contract_term_attributes: ContractTerm.attribute_names.map(&:to_sym).push( contract_term_fees_attributes: ContractTermFee.attribute_names.map(&:to_sym).push(:id, :_destroy))
  end
end

 <%= simple_form_for(@provider_contract, html: { class: "ui form"}) do |f| %>
    <%= f.error_notification %>
    <%= f.error_notification message: f.object.errors[:base].to_sentence if f.object.errors[:base].present? %>

  <div class="ui tab" data-tab="stage-4">
      <%= f.simple_fields_for :contract_term do |ct| %>
        <%= render 'provider_contracts/partials/contract_term', f: ct %>
      <% end %>
    </div>
<% end %>

class ContractTerm < ApplicationRecord
  belongs_to :provider_contract
  has_many :contract_term_fees, dependent: :destroy


  accepts_nested_attributes_for :contract_term_fees, reject_if: :all_blank, allow_destroy: true
end



\u contract\u term.html.erb
<div id="#term_fees">
    <%= f.simple_fields_for contract_term_fees do |ff| %>
      <%= render 'provider_contracts/contract_term_fee_fields', f: ff %>
    <% end %>
  </div>
  <div class="pt-2 pb-2 links">
    <%= link_to_add_association f, :contract_term_fees, class: 'ui positive basic button' do %>
      Add Fees
    <% end %>
  </div>


加收费用

合同条款.rb
class ProviderContractsController < ApplicationController
  before_action :set_provider_contract, only: %i[show edit update destroy]

def new
    @provider_contract = ProviderForm.find(params[:provider_form_id])
    @provider_contract = ProviderContract.new(provider_form_id: @provider.id)
    @provider_contract.build_contract_term
    @provider_contract.contract_term.contract_term_fees.build


  rescue ActiveRecord::RecordNotFound
    redirect_to home_path, notice: 'The provider has been removed or has not been selected'
  end

  private

  # Use callbacks to share common setup or constraints between actions.
  def set_provider_contract
    @provider_contract = ProviderContract.find(params[:id])
  end

  # Never trust parameters from the scary internet, only allow the white list through.
  def provider_contract_params
    params.require(:provider_contract).permit(ProviderContract.attribute_names.map(&:to_sym),

                                              contract_term_attributes: ContractTerm.attribute_names.map(&:to_sym).push( contract_term_fees_attributes: ContractTermFee.attribute_names.map(&:to_sym).push(:id, :_destroy))
  end
end

 <%= simple_form_for(@provider_contract, html: { class: "ui form"}) do |f| %>
    <%= f.error_notification %>
    <%= f.error_notification message: f.object.errors[:base].to_sentence if f.object.errors[:base].present? %>

  <div class="ui tab" data-tab="stage-4">
      <%= f.simple_fields_for :contract_term do |ct| %>
        <%= render 'provider_contracts/partials/contract_term', f: ct %>
      <% end %>
    </div>
<% end %>

class ContractTerm < ApplicationRecord
  belongs_to :provider_contract
  has_many :contract_term_fees, dependent: :destroy


  accepts_nested_attributes_for :contract_term_fees, reject_if: :all_blank, allow_destroy: true
end

class ContractTerm

服务器日志
ActionView::Template::Error (undefined method `reflect_on_association' for NilClass:Class):
    62:     <% end %>
    63:   </div>
    64:   <div class="pt-2 links">
    65:     <%= link_to_add_association  f, :contract_term_fees, class: 'ui secondary basic button' do %>
    66:       Add Fees
    67:     <% end %>
    68:   </div>

ActionView:：Template:：Error（NilClass:Class的未定义方法“reflect\u on\u association”）：
62:     
63:   
64:   
65:     
66：加上费用
67:     
68:   
通常，当发生此错误时，它意味着接受
的_嵌套_属性_丢失，或者我们在某个地方交了一个nil对象
从您显示的代码中

接受：合同的\u嵌套属性\u在合同
中缺少条款
合同条款费用的f.simple\u fields\u
是一个打字错误，应该是f.simple\u fields\u:contract\u term\u fees
（contract\u term\u fees
显然为零）

注意：在Rails 6中，正如在Rails 5中一样，您还必须声明关系的inverse\u:
，以确保嵌套关系将正确保存（默认情况下，所属的是必需的，没有的inverse\u，Rails无法知道它是提供的）
所以
错误显示的代码与您正在显示的代码不同（错误的第65行与您的合同条款不同）。对不起，我昨晚累坏了。我不确定这是否是问题所在，但您丢失了：
此处
，：合同条款\u费用
提供商表单id未保存。。我只是将其放在一个隐藏字段中谢谢！-从现在起我将使用反向\u