Rails model validation on create and update only
Ruby on-RailsValidationModelRuby on-Rails Problem Overview
If I want to have validation only on create, then I can do
validates_presence_of :password, :on => :create
But how do I say on create and update? I tried this but it didn't work:
validates_presence_of :password, :on => [ :create, :update ]
Do I have to define the validation two times?
Ruby on-Rails Solutions
Solution 1 - Ruby on-Rails
By default, the validations run for both create and update. So it should be just:
validates_presence_of :password
The :on key just allows you to choose one of them.
Solution 2 - Ruby on-Rails
Only write:
validates_presence_of :password
No need...
on => :create
Solution 3 - Ruby on-Rails
You can use this when you need to disable the validation on some specific operations, such as delete.