ruby-on-rails - rails 3 - 在资源上使用 form_for 时出现路径错误

Question

在我的 Rails 项目中，当我查看 /subscription/new 时出现以下错误:

NoMethodError in Subscriptions#new

Showing /redacted/app/views/subscriptions/new.html.erb where line #4 raised:

undefined method `subscriptions_path' for #<#<Class:0x007fd02c8bbb28>:0x007fd0308f7a48>

Extracted source (around line #4):

1: <div class="grid_6">
2:   <h1>New Subscription</h1>
3:   <p>
4:     <%= form_for @subscription, :html => { class: 'form_dark' } do |f| %>
5:       <% if @subscription.errors.any? %>
6:         <div class="error_messages">
7:           <h1><%= pluralize(@subscription.errors.count, "error") %> prohibited this subscription from being saved:</h1>

为此，我的路线文件包含 resource :subscription。

附加代码信息:

用户模型:

class User < ActiveRecord::Base
  devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable

  attr_accessible :email, :password, :password_confirmation, :remember_me

  has_one :subscription
end

订阅模式:

class Subscription < ActiveRecord::Base
  attr_accessible :status, :stripe_token, :user_id, :last_charge, :stripe_card_token
  belongs_to :user
  has_many :payments, :dependent => :destroy
  belongs_to :plan
  attr_accessor :stripe_card_token
end

我的 SubscriptionsController 新方法:

def new
    @subscription = User.find(current_user.id).build_subscription 
end

感谢任何帮助，谢谢!

Answer 1

我相信，当您将 form_for 传递给类似 @subscription(具有 Subscription 类)的对象时，它默认需要 url subscriptions_path。但是由于您已将 subscription 声明为单一资源，因此定义了 url subscription_path。你应该明确指定这条路线

<%= form_for @subscription, url: subscription_path, :html => { class: 'form_dark' } do |f| %>