Rails simple_form_for 没有路由匹配，缺少 [:id]

Question

直截了当，这里有点混乱 这是我的代码

routes.rb

Rails.application.routes.draw do

  namespace :main, path: ':master_url' do
    root 'sites#index'
    namespace :dashboard do
        root 'dashboards#index'
      resources :masters
    end
    get "/:action" => 'sites#:action'
  end
  root 'main/sites#index'

end

rake 路线

                 Prefix Verb   URI Pattern                                       Controller#Action
                 main_root GET    /:master_url(.:format)                            main/sites#index
       main_dashboard_root GET    /:master_url/dashboard(.:format)                  main/dashboard/dashboards#index
    main_dashboard_masters GET    /:master_url/dashboard/masters(.:format)          main/dashboard/masters#index
                           POST   /:master_url/dashboard/masters(.:format)          main/dashboard/masters#create
 new_main_dashboard_master GET    /:master_url/dashboard/masters/new(.:format)      main/dashboard/masters#new
edit_main_dashboard_master GET    /:master_url/dashboard/masters/:id/edit(.:format) main/dashboard/masters#edit
     main_dashboard_master GET    /:master_url/dashboard/masters/:id(.:format)      main/dashboard/masters#show
                           PATCH  /:master_url/dashboard/masters/:id(.:format)      main/dashboard/masters#update
                           PUT    /:master_url/dashboard/masters/:id(.:format)      main/dashboard/masters#update
                           DELETE /:master_url/dashboard/masters/:id(.:format)      main/dashboard/masters#destroy
                      main GET    /:master_url/:action(.:format)                    main/sites#:action
                      root GET    /                                                 main/sites#index

ma​​in/dashboard/masters_controller.rb

class Main::Dashboard::MastersController < ApplicationController
before_action :all_masters, only: [:index, :create, :update, :destroy]
before_action :set_master, only: [:edit, :update, :destroy, :show]
before_action :init_master
layout 'main'

respond_to :html, :js

def new
    @master = Master.new
end
def create
    @master = Master.create(conf_params)
end
def edit
end
def update
    @master.update_attributes(conf_params)
end

def destroy
    @master.destroy
end

private
def all_masters
    @masters = Master.all
end
def set_master
    @master = Master.find(params[:id])
end
def conf_params
    params.require(:master).permit(:title,:url)
end
def init_master
    @master_url = Master.find_by_url(params[:master_url])
  end
end

这是我在部分渲染 _form_master.html.erb 时所做的，我调用了 new.js.erb 和 edit.js.erb

$('#form-master').html("<%= j (render 'form_master', :master => @master) %>");

_form_master.html.erb 内容

  <%= simple_form_for [:main, :dashboard, @master], remote: true do |f| %>
                <%= f.input :url, label: 'URL' %>
                <%= f.input :title, label: 'Title' %>
                <%= f.button :submit %>
            <% end %>

问题：

当我打电话给新主人时，用这个

<%= link_to new_main_dashboard_master_path, remote: true do %>

页面渲染完美，创建大师做得很好 但是当我调用编辑时，用这一行

<%= link_to :controller=>"masters",:action =>"edit",:id => master do %>

which was my problem earlier，rails 返回错误消息：

ActionView::Template::Error (No route matches {:action=>"show", :controller=>"main/dashboard/masters", :format=>nil, :id=>nil, :master_url=>#<Master id: 4, url: "test", title: "Test Aja", created_at: "2015-02-02 08:55:07", updated_at: "2015-02-02 08:55:07">} missing required keys: [:id]):

我将 master.id 和 master.title 的值显式渲染到页面，这将返回正确的值。

问：我该如何解决这个问题？我尝试了几次，从更改 js.erb 上的本地人传递，将 @model 更改为只是模型，仍然无法正常工作

感谢任何帮助，谢谢！ :)

Answer 1

这里我们有 post = Post.find(params[:post_id])

来自http://blog.8thcolor.com/en/2011/08/nested-resources-with-independent-views-in-ruby-on-rails/

你的模型没有类似的东西吗？ 您需要某种 :id 不是吗？

这可能与上下文无关，但我不会尝试重用您的代码。 尝试类似的东西可能太简单了 渲染简单：params[:someparam].inspect 但它对我有帮助。 http://codefol.io/posts/Deep-Rails-Understanding-HashWithIndifferentAccess-Understanding-the-Params-Hash