功能测试不适用于嵌套参数

Question

在stackoverflow上的第一篇文章，事先道歉，任何类似noob的。

我在一次功能测试中遇到了一个错误，几个小时后，我似乎无法弄清楚如何通过它。

总之，一个invoice_schedule其中has_manyinvoice_milestones。然后，invoice_milestones有一个属性，estimate_percentage（一个整数）。我的型号models/invoice_schedule.rb有一个验证，要求所有的estimate_percentages之和必须等于100.

invoice_schedule创建操作的功能测试每次都失败。用我现在的代码下面，它已经错误了。我看不出它会如何误传我传递的参数。

我还会注意到estimate has_one :invoice_schedule

任何帮助或建议表示赞赏:)

型号/ invoice_schedule.rb：

class InvoiceSchedule < ActiveRecord::Base 
    belongs_to :estimate 
    has_many :invoice_milestones, :dependent => :destroy 

    accepts_nested_attributes_for :invoice_milestones, :allow_destroy => true 

    validate :total_must_equal_one_hundred_percent 

    def total_must_equal_one_hundred_percent 
     if total_percent != 100 
      errors.add(:invoice_milestones, "Total must equal 100%") 
     end 
    end 

    def total_percent 
     invoice_milestones.to_a.sum { |item| item.estimate_percentage || 0 } 
    end 
end 

型号/ invoice_milestone.rb：

class InvoiceMilestone < ActiveRecord::Base 
    belongs_to :invoice_schedule 
    belongs_to :invoice 

    validates :estimate_percentage, :numericality => {:only_integer => true, :greater_than_or_equal_to => 0, :less_than_or_equal_to => 100} 
end 

controllers/invoice_schedules_controller.rb

def create 
    @invoice_schedule = InvoiceSchedule.new(params[:invoice_schedule]) 
    @estimate = Estimate.find_by_id(params[:estimate_id]) 

    respond_to do |format| 
     if @invoice_schedule.save 
     format.html { redirect_to invoice_schedule_path(@invoice_schedule), :flash => {:notice => 'Invoice schedule was successfully created.', :status => 'success'} } 
     format.json { render json: @invoice_schedule, status: :created, location: @invoice_schedule } 
     else 
     format.html { render action: "new" } 
     format.json { render json: @invoice_schedule.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

测试/功能/ invoice_schedules_controller_test.rb

setup do 
    @account = accounts(:lorem) 
    @estimate = estimates(:lorem_one) 
    @user = users(:lorem_vendor) 
    @request.host = "#{@account.subdomain}.myapp.local" 
    session[:user_id] = @user.id 
    @invoice_schedule = invoice_schedules(:lorem_one) 
    @invoice_milestone = invoice_milestones(:lorem_one) 
    @data_estimate = estimates(:lorem_two) 
    @data_invoice_schedule = @invoice_schedule.attributes.merge({estimate_id: @data_estimate.id}) 
    end 

    test "should create invoice_schedule" do 
    assert_difference('InvoiceSchedule.count') do 
     post :create, :invoice_schedule => { estimate_id: @data_estimate, :invoice_milestone => {estimate_percentage: 100}} 
    end 

    assert_redirected_to estimate_invoice_schedule_path(@estimate, assigns(:invoice_schedule)) 
    end 

的config/routes.rb中

require 'subdomain' 

    Accountimize::Application.routes.draw do 

     resources :invoices do 
     member do 
      get 'generateInvoiceFromMilestone' 
     end 
     end 

     resources :users 
     resources :sessions 

     get "sign_up" => "accounts#new", :as => "sign_up" 

     resources :accounts 

     resources :clients do 
     get :client_address, on: :member 
     end 

     resources :estimates do 
     resources :invoice_schedules, :shallow => true 
     end 

     resources :line_items 

     constraints(Subdomain) do 
     match '/' => 'accounts#show' 
     get "log_in" => "sessions#new", :as => "log_in" 
     get "log_out" => "sessions#destroy", :as => "log_out" 
     get "register" => "users#new", :as => "register" 
     end 
     root :to => 'site#index', :as => 'site' 
    end 

错误的痕迹，我得到：

InvoiceSchedulesControllerTest 
    test_should_create_invoice_schedule         ERROR 
     No route matches {:invoice_schedule=>{:estimate_id=>"706507935", :invoice_milestones_attributes=>{"0"=>{:description=>"test", :estimate_percentage=>"100"}}}, :controller=>"invoice_schedules", :action=>"create"} 
     STDERR: 
     Exception `ActionController::RoutingError' at /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/action_dispatch/routing/route_set.rb:465:in `raise_routing_error' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/action_dispatch/routing/route_set.rb:461:in `rescue in generate' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/action_dispatch/routing/route_set.rb:453:in `generate' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/action_dispatch/routing/route_set.rb:494:in `generate' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/action_dispatch/routing/route_set.rb:490:in `generate_extras' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/action_dispatch/routing/route_set.rb:486:in `extra_keys' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/action_controller/test_case.rb:145:in `assign_parameters' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/action_controller/test_case.rb:438:in `process' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/action_controller/test_case.rb:49:in `process' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/action_controller/test_case.rb:370:in `post' 
     test/functional/invoice_schedules_controller_test.rb:35:in `block (2 levels) in <class:InvoiceSchedulesControllerTest>' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/testing/assertions.rb:55:in `assert_difference' 
     test/functional/invoice_schedules_controller_test.rb:30:in `block in <class:InvoiceSchedulesControllerTest>' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/testing/setup_and_teardown.rb:35:in `block in run' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/callbacks.rb:444:in `_run_setup_callbacks' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/callbacks.rb:81:in `run_callbacks' 
     /Users/Matt/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/testing/setup_and_teardown.rb:34:in `run' 

我我尝试了很多其他方法来完成添加invo ice_milestone添加到功能测试中新创建的invoice_schedule中，但似乎没有任何工作适用于我。如果添加了accept_nested_attributes_for，为什么会收到上述路由错误？

Answer 1

这有两个部分。首先你需要获得路由方面的权利。因为你嵌套的发票排程内估计需要在顶层（未里面params[:invoice_schedules]）提供的estimate_id，即

post :create, :estimate_id => @data_estimate.id, :invoice_schedule => {...} 

的期望是那么您控制器并沿

estimate = Estimate.find(params[:estimate_id]) 
@invoice_schedule = estimate.invoice_schedules.build params[:invoice_schedule] 

东西线

第二部分是关于嵌套属性 - 你需要提供一个符合Rails期望的参数。第一部分是散列中的密钥应该是:invoice_milestones_attributes。由于这是一个has_many，相应的值需要 是散列的阵列，或者散列的散列（按键被忽略 - 这是因为在一个轨道参数传递数组和散列之间的相互作用主要是存在的），例如

post :create, :estimate_id => @data_estimate.id, 
       :invoice_schedule => { 
       :invoice_milestones_attributes => [ 
        {:estimate_percentage => 100} 
       ] 
       }