我试图让我的自定义验证在 create 上运行。 但当我做一个 find 然后 save 时, 铁路将它作为 create 处理, 并运行自定义验证。 我如何在创建新记录而不更新已找到记录时才能让这些验证工作?
在你的验证代码线上试试这个:
validate :custom_validation, on: :create
在此指定仅在 create action > 上运行验证 。
资料来源:
ApideModel/validations/ClassMethods/validates@apidock.com/a>
class MyPerson < ActiveRecord::Base
validate :age_requirement
private
def age_requirement
unless self.age > 21
errors.add(:age, "must be at least 10 characters in length")
end
end
end
要仅在创建新对象时才运行验证符,您可以将示例第二行更改为: validate:age_requirement, on:: create
仅在更新时: validate: age_ requirement, on:: 更新
希望那能帮助下一个人!
collection_select and select Rails helpers: Which one should I use? I can t see a difference in both ways. Both helpers take a collection and generates options tags inside a select tag. Is there a ...
We ve deployed our rails app to EC2. In our setup, we have two proxies on small instances behind round-robin DNS. These run nginx load balancers for a dynamically growing and shrinking farm of web ...
As part of a web application I need an auth-code to pass as a URL parameter. I am currently using (in Rails) : Digest::SHA1.hexdigest((object_id + rand(255)).to_s) Which provides long strings like : ...
I ve installed RubyCAS-Client version 2.1.0 as a plugin within a rails app. It s working, but I d like to remove the ?ticket= in the url. Is this possible?
I have a these 3 models: class User < ActiveRecord::Base has_many :permissions, :dependent => :destroy has_many :roles, :through => :permissions end class Permission < ActiveRecord::...
I m building an xml document from a hash. The xml attributes need to be in order. How can this be accomplished? hash.to_xml
guys which text editor is good for Rubyonrails? i m using Windows and i was using E-Texteditor but its not free n its expired now can anyone plese tell me any free texteditor? n which one is best an ...
I’m developing an application dedicated to generate statistical reports, I would like that user after saving their stat report they save sql queries too. To do that I wrote the following module: ...