rails跳过验证

2010-12-21

rails validation

文章分类:Ruby编程
rails3中的验证，以下方法会触发验证
Java代码
  1. create  
  2. create!  
  3. save  
  4. save!  
  5. update  
  6. update_attributes  
  7. update_attributes!  

以下方法则会跳过验证，将数据保存到数据库中
Java代码
  1. decrement!  
  2. decrement_counter  
  3. increment!  
  4. increment_counter  
  5. toggle!  
  6. update_all  
  7. update_attribute  
  8. update_counters  

当使用
Java代码
  1. save(:validate => false)  

验证也会被跳过。

Java代码
  1. validates_acceptance_of  
必须接受（多用于霸王条款）

Java代码
  1. class Library < ActiveRecord::Base     
  2. has_many :books    
  3. validates_associated :books  
  4. end   



Java代码
  1. validates_confirmation_of :password（多用于验证两次密码）  


Java代码
  1. class Account < ActiveRecord::Base   validates_exclusion_of :subdomain, :in => %w(www),     :message => "Subdomain %{value} is reserved."  
  2. end （用于验证是否包含此www）  


Java代码
  1. class Product < ActiveRecord::Base   validates_format_of :legacy_code, :with => /\A[a-zA-Z]+\z/,     :message => "Only letters allowed"end   
  2. （格式验证）  


上传时验证文件类型:
Java代码
  1. # 验证文件后缀    
  2. validates_format_of :photo, :with => %r{\.(gif|png|jpg)$}i, :message => "must be a URL for a GIF, JPG, or PNG image"  
  3. # 如果使用file_column，则可以用以下方法  
  4. validates_file_format_of :photo, :in => ["gif", "png", "jpg"]  

 

 

 

最后我是用p.save false来实现跳过验证的

hod
rails跳过验证
Ruby on Rails latest stable (v2.3.8) - 3 notes - Class: ActiveRecord::Base
Related methods

rails跳过验证 = private
rails跳过验证 = protected

update_attributes(attributes) public

Updates all the attributes from the passed-in Hash and saves the record. If the object is invalid, the saving will fail and false will be returned.

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August 27, 2008
15 thanks

Only attr_accessible attributes will be updated

If your model specified attr_accessible attributes, only those attributes will be updated.

Use attr_accessible to prevent mass assignment (by users) of attributes that should not be editable by a user. Mass assignment is used in create and update methods of your standard controller.

For a normal user account, for example, you only want login and password to be editable by a user. It should not be possible to change the status attribute through mass assignment.

  class User < ActiveRecord::Base
    attr_accessible :login, :password
  end

So, doing the following will merrily return true, but will not update the status attribute.

  @user.update_attributes(:status => 'active')

If you want to update the status attribute, you should assign it separately.

  @user.status = 'active'
  save
August 14, 2008
4 thanks

Calls attribute setter for each key/value in the hash

This is a convenience to set multiple attributes at the same time. It calls the "setter" method

  self.attribute=(value)

for each key in the hash. If you have overridden the setter to add functionality, it will be called.

This also allows you to create non-table attributes that affect the record. For instance, a full_name=() method could parse the string and set the first_name=() and last_name() accordingly.

June 17, 2009
3 thanks

Skipping validation

Unlike the save method, you can’t pass false to update_attributes to tell it to skip validation. Should you wish to do this (consider carefully if this is wise) update the attributes explicitly then call save and pass false:

  @model_name.attributes = params[:model_name]
  @model_name.save false

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