Question

我对rails很新，我无法弄清楚如何修复这个bug。所以这是我的模特：

用户

class User < ActiveRecord::Base
    before_save { email.downcase! }
    has_many :tickets
    has_many :events, through: :tickets


    validates :first_name, presence: true
    validates :last_name, presence: true

    VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-]+(\.[a-z\d\-]+)*\.[a-z]+\z/i
    validates :email, presence: true, length: { maximum: 255},
                    format:     { with: VALID_EMAIL_REGEX },
                    uniqueness: { case_sensitive: false }


end

事件：

class Event < ActiveRecord::Base
    has_many :tickets
    has_many :users, through: :tickets

    validates :event_title, presence: true
    validates :event_place, presence: true
    validates :event_description, presence: true
    validates :event_date, presence: true
    validates_numericality_of :event_number_tickets, presence: true, numericality: { only_integer: true }, greater_than: 0
end

票：

class Ticket < ActiveRecord::Base
  belongs_to :user
  belongs_to :event
end

我有一张票据的测试文件

require 'test_helper'

class TicketTest < ActiveSupport::TestCase

  def setup
    @user = User.new(first_name: "Example", last_name: "User")

    @event = Event.new(event_title: "Example Event",
                       event_place: "123 Example Ave.", 
                       event_description: "Our example event for children to get introduced to technology",
                       event_date: DateTime.now,
                       event_number_tickets: 30)
    @ticket = Ticket.new(event: @event, ticket_type: "regular", number_of_children: 1)
    @user.tickets << @ticket
  end

  test "should be valid" do
    assert @user.tickets.valid?     
  end

end

每当我运行此测试时，我都会收到以下错误：

NoMethodError: undefined method `valid?' for #<Ticket::ActiveRecord_Associations_CollectionProxy:0x007fae767617c8>
    test/models/ticket_test.rb:18:in `block in <class:TicketTest>'

我是否必须为此特定示例创建自定义有效方法。

Answer 1

ActiveRecord集合不是valid?方法。如果您正在尝试测试您创建的最后一张故障单是否有效，则可以执行assert @ticket.valid?之类的操作。

我认为您可能在设置方法中做了太多工作。您可以尝试在设置中设置用户和事件模型，并将您描述的其余部分分解为不同的测试块。

Rails NoMethodError：未定义的方法`有效吗？＆＃39;

1 个答案: