2017-02-10 74 views
0

我正在rails上構建一個嵌入式表單。has_one嵌套關聯無效編輯路徑上的外鍵

添加嵌套has_one協會工作正常。但是,當我加載編輯頁面時,嵌套關聯的外鍵company_id無效。

我試過update_only: trueaccepts_nested_attributes_for,其中包括:在強大的參數中的id,如在其他類似的回答問題stackoverflow中建議,但沒有爲我工作。

任何人都可以告訴我什麼是實際上導致嵌套關聯更新和無效其外鍵本身?我的代碼如下所示。謝謝!

# company.rb 
class Company < ApplicationRecord 
    has_one :mission 
    accepts_nested_attributes_for :mission, update_only: true 
end 

# mission.rb 
class Mission < ApplicationRecord 
    belongs_to :company, optional: true 
    validates :description, presence: true, length: { maximum: 100 } 
end 

# companies_controller.rb 
class CompaniesController < ApplicationController 
    def edit 
    @company = Company.find(params[:id]) 
    @company.build_mission if @company.build_mission.nil? 
    end 

    def update 
    @company = Company.find(params[:id]) 
    @company.assign_attributes(company_params) 
    if @company.valid? 
     @company.save 
     redirect_to companies_path 
    end 
    end 

    private 

    def company_params 
    params.require(:company).permit(mission_attributes: [:id, :description, :_destroy]) 
    end 
end 

# edit.html.erb 
<%= form_for @company, :url => company_path(@company), :html => {class: 'ui form', method: :put} do |f| %> 
    <%= f.fields_for :mission do |mission| %> 
    <div class="field"> 
     <%= mission.label :mission %> 
     <%= mission.text_field :description %> 
    </div> 
    <% end %> 
    <%= f.button :submit => "", class: "ui button" %> 
<% end %> 

回答

0

嘿我設法解決問題後,一個良好的睡眠。事實證明,我只需要在公司控制人員層面上玩弄其他條件。編輯方法應修改爲: -

def edit 
    @company = Company.find(params[:id]) 
    if @company.mission 
    else 
    @company.build_mission 
    end 
end