继承资源 设计用户，#new缺少必需的键:[:id]

Question

我在Rails 4：

上使用继承的资源宝石有问题

每当我尝试创建一个范围向用户范围的新项目时，我会收到此错误：

 Failure/Error: visit new_project_path
 ActionView::Template::Error:
   No route matches {:id=>#<Project id: nil, user_id: 32568, name: "", created_at: nil, updated_at: nil>} missing required keys: [:id]

我理解，新操作不需要ID，唯一需要的就是访问我通过begin_of_association_chain方法提供的用户。

有人知道为什么会发生这种情况吗？我确定我缺少简单的东西？

控制器：

类ProjectScontroller＆lt;senasitedResources ::基础 wonds_to：html，：json

before_filter :authenticate_user!
protected
  def begin_of_association_chain
    #provided by devise
    current_user 
  end
private
  def permitted_params
    {:project => params.fetch(:project, {}).permit(:email, :name, :destination_ids => [])}
  end
end

RSPEC测试：

require 'spec_helper'
include Warden::Test::Helpers
describe "the signed in user" do
  before :each do
    @user = FactoryGirl.create(:confirmed_user)
    login_as(@user, scope: :user)
  end
  describe "with new project" do
    before :each do
      @project = FactoryGirl.attributes_for(:project)
      visit new_project_path
      fill_in "project_name", with: @project[:name]
    end
    it "can create" do
      expect { click_button('Create Project') }.to change(Project, :count).by(1)
    end
  end
end

查看：

<div class="row">
 <div class="large-12 columns">
  <%= form_for(@project) do |f| %>
    <% if @project.errors.any? %>
      <div data-alert class="alert-box alert"><%= pluralize(@project.errors.count, "error") %> prohibited this source from being saved:</div>
    <% end %>
    <%= f.text_field_block :name, placeholder: "Your project's name", maxlength: 500 %>
    <hr>
    <div class="row">
     <div class="large-5 columns">
        <%= f.submit class: "button tiny" %> <%= link_to 'Back', :back, class: "button secondary tiny" %>
     </div>
    </div>
  <% end %>
 </div>
</div>

路由：

projects POST     /projects(.:format)           projects#create
new_project GET   /projects/new(.:format)       projects#new
edit_project GET  /projects/:id/edit(.:format)  projects#edit
project GET       /projects/:id(.:format)       projects#show
PATCH             /projects/:id(.:format)       projects#update
PUT               /projects/:id(.:format)       projects#update
DELETE            /projects/:id(.:format)       projects#destroy

Answer 1

我找到了答案。

在我的代码中，我正在循环通过各种项目来创建快捷链接

在Active Resource中创建一个新模型时，它使用：current_user.project.build（），这为没有ID的用户添加了一个未保存的实体。当我循环创建项目链接时，Rails会抱怨，因为它无法创建指向没有ID的未保存实体的链接。