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Is there any way to trigger validation only in specific forms(controller's action), not globally at every save or update?
Something like User.create(:validate=>true) flag.
208
In general, there are two main types of form validation: After submit validation. Inline validation.
In short, inline validation is an effort on behalf of the form to help users correct information as they go, ideally so that when the point comes to submit the form, they are more likely to submit it on the first attempt. The more failed attempts a user makes to submit the form, the more likely they are to give up.
The simplest HTML validation feature is the required attribute. To make an input mandatory, add this attribute to the element. When this attribute is set, the element matches the :required UI pseudo-class and the form won't submit, displaying an error message on submission when the input is empty.
If You want to disable the validation for all elements of the form add the novalidate attribute in the form tag which will disable the validation for entire form.
Yes, you can supply conditionals to the validations, eg:
validates_presence_of :something, :if => :special?
private
def make_sepcial
@special = true
end
def special?
@special
end
Now all you have to do to turn on these validations is:
s = SomeModel.new
s.make_special
As you explained in the comments, you want to skip validation for new records. In that case, you can use thomasfedb's answer, but don't use the @special variable, but:
validates_presence_of :something, :if => :persisted?
This will validate only for saved Users, but not for new Users. See the API documentation on persisted?.
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