回调会使堆栈级别过高-Java 学习之路

我需要为：assign_state和：state_closed运行回调，但它们不起作用并且加注

Stack level to deep

Ticket.rb

class Ticket < ActiveRecord::Base
    before_save :default_values
  after_update :state_closed
  after_create :assign_state

  attr_accessible :description, :title, :employee_department_id, :user_id, :first_name,
   :last_name , :email, :state_id, :employee_id, :ticket_state, :assign_state


  belongs_to :employee_department
  belongs_to :user
  belongs_to :state
  belongs_to :employee

  has_many :replies

  def default_values
    self.state_id = 3 if self.state_id.nil?
  end

  def to_label
    ticket_state.to_s
  end

  def state_closed
    if self.ticket_state == "Solved" || self.ticket_state == "Canceled" 
      self.ticket_state = "Closed"
      self.save
    end
  end

def assign_state
  if self.employee_id.nil?
    self.assign_state = "Un-assigned"
  else 
    self.assign_state = "Assigned"
  end 
  self.save
end

   Ticket.all.each do |ticket|
    if ticket.ticket_state.blank?
      ticket.ticket_state = 'open'
    end
    ticket.save
  end
end

2 回答

0

您的assign_state在无限递归中调用自身：它调用 #save ，然后触发 #assign_state 回调 .

回复于 2024-04-29T23:55:55+08:00
2
如果不在回调中调用 save 或使用 update_attributes ，则可以使用 before_update 回调 .
```
before_update :state_closed

def state_closed
  if self.ticket_state == "Solved" || self.ticket_state == "Canceled" 
    self.ticket_state = "Closed"
  end
end
```
这将更新ticket_state，原始更新调用将更新它 . 所以这种方式更新只被调用一次 .
回复于 2024-04-29T23:55:55+08:00

回调会使堆栈级别过高

2 回答

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