升级到state_machines时验证问题gem

问题描述：

我想从state_machine更改为state_machines。当我开始这样做时，我遇到了国家不再从初始状态改变。升级到state_machines时验证问题gem

回顾了一些计算器和其他指南： -

https://teamtreehouse.com/community/statemachines-usage
状态机/ state_machines-的ActiveRecord＃33
Validation before persistance on state_machine gem

因此改变我已经做：

使用状态机，ActiveRecord的宝石
加DEF初始化... （见下文）
我现在对我的数据得到一个耙子设置错误。它似乎与验证联系人（首先创建一个相关的模型）有问题。无论状态如何，联系人总是首先创建。这在改变宝石之前运行良好。

有什么想法吗？我想我已经包含了所有相关的代码。

偕文件：

ruby "2.2.2" 
gem "rails", "4.2.1" 
gem "pg", "0.17.1" # postgresql database 
gem "state_machines-activerecord"

宝石锁文件

state_machines (0.4.0) 
state_machines-activemodel (0.3.0) 
    activemodel (~> 4.1) 
    state_machines (>= 0.4.0) 
state_machines-activerecord (0.3.0) 
    activerecord (~> 4.1) 
    state_machines-activemodel (>= 0.3.0)`

lead.rb（模型）是：

`class Lead < ActiveRecord::Base 
    belongs_to :created_by_user, class_name: "User", inverse_of: :leads_created 
    belongs_to :contact 
    belongs_to :user 
    accepts_nested_attributes_for :contact 
    validates :contact, presence: true 
state_machine :state, initial: :new_lead do 
    state :claimed 
    state :referred 
    state :broadcast 
    state :unclaimed` 

    `event :claim! do 
     transition all => :claimed 
    end 

    event :unclaim! do 
     transition claimed: :unclaimed 
    end 

    event :refer! do 
     transition new_lead: :referred 
    end 

    event :broadcast! do 
     transition all => :broadcast 
    end` 



`def initialize(*) 
    super() # NOTE: This *must* be called, otherwise states won't get 
    initialized 
    end`

CONTROLLER

def lead_attributes 
    params.require(:lead).permit( :claimed, 
     :contact_id, 
     :status, 
     :state, 
     :user_id

setup_acceptance.rake

def create_contact(options={}) 
    user    = User.find_by(last_name: "Smith") 
    contact_attributes = { created_by_user: user, user: user } 
    attributes   = contact_attributes.merge options 
    contact = Contact.create! attributes 
    contact.save! 
    contact 
end 
def create_lead(options={}) 
    user    = User.find_by(last_name: "Smith") 
    client_attributes = { user: user, created_by_user: user } 
    attributes  = client_attributes.merge options 
    Lead.create! attributes ****(LINE 1311 where error message occurs)**** 
end

rake.setup

Lead.transaction do #(NOTE: THIS IS LINE 435) 
    create_lead( #(NOTE: THIS IS LINE 436) 
     user: User.find_by(last_name: "Smith"), 
     contact: Contact.find_by(last_name: "Lozar"), 
     status: 0, 
     state: "claimed" 
     } 
     ] 
    )

错误：

rake aborted! 
ActiveRecord::RecordInvalid: Validation failed: Contact Please enter a value 
/Users/workspace/ab/lib/tasks/setup_acceptance.rake:1311:in `create_lead' 
/Users/workspace/ab/lib/tasks/setup.rake:436:in `block (2 levels) in <top (required)> 
/Users/workspace/ab/lib/tasks/setup.rake:435:in `block in <top (required)>' 
Tasks: TOP => setup_sample_data 
(See full trace by running task with --trace)

答

非常感谢@avdi

解决的办法是改变：

super()

...它丢弃所有的初始化参数

到：

super

...含蓄地保留他们。

升级到state_machines时验证问题gem

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