Rails路由选项"as"，无法编辑资源

Question

在我的应用程序中，我有模型“regulations”，用于创建法规的表单如下所示：

- if %W(edit update).include? action_name
  = content_for :heading, t('partners.regulations.edit')
- else
  = content_for :heading,  t('partners.regulations.new')
.row
  .col-md-6
    = horizontal_simple_form_for [:partners, @regulation] do |f|
      = f.error_notification
      %ul.nav.nav-pills
        %li
          = link_to image_tag("flag_pl.png"), '#PL', class: 'regulation_pl'
        %li
          = link_to image_tag("flag_en.png"), '#EN', class: 'regulation_en'
      .polish_regulation
        %h1.page-header
          = t('partners.regulations.polish')      
        = f.input :content_pl, :as => :ckeditor, :input_html => { :ckeditor => {:toolbar => 'Pure', width: 750} }, error: false
      .english_regulation
        %h1.page-header
          = t('partners.regulations.english')       
        = f.input :content_en, :as => :ckeditor, :input_html => { :ckeditor => {:toolbar => 'Basic', width: 750} }, error: false    
      - if %W(edit update).include? action_name
        = f.submit t('actions.save_changes'), class: "btn btn-lg btn-default"
      - else
        = f.submit t('partners.regulations.save'), class: "btn btn-lg btn-default"

在我的路线上：

namespace :partners do
  resources :regulations, as: :rental_company_regulation, except: :show
end

我的控制器看起来是这样的：

module Partners
  class RegulationsController < ApplicationController
    include Partners::BaseController
    load_and_authorize_resource through: :rental_company, singleton: true

    before_action :set_breadcrumbs
    before_action :set_regulation, only: :new

    def new
      if @rental_company_regulation
        redirect_to  edit_partners_rental_company_regulation_path(@rental_company_regulation)
      end
      add_breadcrumb t('partners.regulations.new')
    end

    def create
      if @regulation.save
        flash[:notice] = t('partners.regulations.created')
        redirect_to partners_root_path
      else
        add_breadcrumb t('partners.regulations.new')
        render :new
      end
    end


    def edit
      add_breadcrumb t('partners.regulations.edit')
    end

    def update
      if @regulation.update(regulation_params)
        flash[:notice] = t('partners.regulations.updated')
        redirect_to partners_root_path
      else  
        add_breadcrumb t('partners.regulations.edit')
        render :edit
      end
    end

    protected

    def set_regulation
      @rental_company_regulation = Regulation.where(rental_company_id: rental_company).first
    end

    def set_breadcrumbs
      add_breadcrumb current_partner.rental_company.name, :partners_root_path
    end

    private

    def regulation_params
      params.require(:regulation).permit(:content_pl, :content_en, :rental_company_id)
    end
  end
end 

从零开始创建资源可以正常工作。但是我转到："http://localhost:3000/partners/regulations/4/edit"来编辑规则，我有以下错误：

undefined method `partners_regulation_path' for #<#<Class:0x0000000242fae8>:0x00000007d9afb0>

我解决不了这个问题。怎么了？

编辑：

耙路：

partners_rental_company_regulation_index GET      /partners/regulations(.:format)                                         partners/regulations#index
                                         POST     /partners/regulations(.:format)                                         partners/regulations#create
  new_partners_rental_company_regulation GET      /partners/regulations/new(.:format)                                     partners/regulations#new
 edit_partners_rental_company_regulation GET      /partners/regulations/:id/edit(.:format)                                partners/regulations#edit
      partners_rental_company_regulation PATCH    /partners/regulations/:id(.:format)                                     partners/regulations#update

Edit2:我也改变了我的格式，如下所示：

= horizontal_simple_form_for [:partners, @regulation], url: partners_rental_company_regulation_path

现在，我可以编辑现有资源，但不能创建一个新的资源。当我试图创建新的一个时，我有以下错误：

No route matches {:action=>"update", :controller=>"partners/regulations"} missing required keys: [:id]

怎么了？

Answer 1

as

为了简化user2675613的回答，您的错误基本上是由在您的路由中使用 argument造成的。

as:基本上允许您“命名”路线：

#config/routes.rb
resources :users               # -> users_path
resources :users, as: :members # -> members_path

误差

您的错误如下：

undefined method `partners_regulation_path'

这基本上意味着你在使用一条不存在的路径。这是因为您在路由中使用了as:选项：

#config/routes.rb
resources :partners do
   resources :regulations #-> partners_regulation_path
end

resources :partners do
   resources :regulations, as: "test" # -> partners_test_path
end

你的路线证实了这一点：

partners_rental_company_regulation_index
new_partners_rental_company_regulation
edit_partners_rental_company_regulation    
partners_rental_company_regulation

Fix

解决此问题的方法是从路由中删除as:选项：

#config/routes.rb
resources :partners do
   resources :regulations #-> partner_regulations_path
end

或者，如果您想为您的路径保留自定义name，则必须更改对parental_company_regulation_path的路径引用

Answer 2

正如您在rake中看到的那样，您的url编辑规则是edit_partners_rental_company_regulation GET /partners/regulations/:id/edit(.:format)，创建一个新的规则，url是new_partners_rental_company_regulation GET /partners/regulations/new(.:format)。

您需要改变您在这里使用表单的方式。您可以为表单的所有公共字段创建一个分部，但您需要将表单中的url部分分隔开来，以发出创建和更新请求。

您可以使用以下内容制作部分_form.html.haml：

= f.error_notification
  %ul.nav.nav-pills
    %li
      = link_to image_tag("flag_pl.png"), '#PL', class: 'regulation_pl'
    %li
      = link_to image_tag("flag_en.png"), '#EN', class: 'regulation_en'
  .polish_regulation
    %h1.page-header
      = t('partners.regulations.polish')      
    = f.input :content_pl, :as => :ckeditor, :input_html => { :ckeditor => {:toolbar => 'Pure', width: 750} }, error: false
  .english_regulation
    %h1.page-header
      = t('partners.regulations.english')       
    = f.input :content_en, :as => :ckeditor, :input_html => { :ckeditor => {:toolbar => 'Basic', width: 750} }, error: false

然后，在您的edit.html.haml中您可以拥有：

= content_for :heading, t('partners.regulations.edit')
  .row
    .col-md-6
      = horizontal_simple_form_for [:partners, @regulation], url: partners_rental_company_regulation_path  do |f|
        = render :partial => "form", :locals => { :f => f }  #you need to pass other required locals too else it'll give error 
        = f.submit t('actions.save_changes'), class: "btn btn-lg btn-default"

类似地，在您的new.html.haml中您可以拥有：

= content_for :heading,  t('partners.regulations.new')
  .row
    .col-md-6
      = horizontal_simple_form_for [:partners, @regulation], url: partners_rental_company_regulation_index_path  do |f|
        = render :partial => "form", :locals => { :f => f } #you need to pass other required locals too else it'll give error
        = f.submit t('partners.regulations.save'), class: "btn btn-lg btn-default"