/ Ruby on Rails
/
method

validate

validate()
protected

Overwrite this method for validation checks on all saves and use Errors.add(field, msg) for invalid attributes.

1Note

Validate() is run always before one of the more specific validation methods

jlamberg ยท Jun 25, 20091 thank

I did not see this mentioned explicitly anywhere.

The method +validate+ is run always before a call to +validate_on_create+ or +validate_on_update+ is made.

Example:

class Foo < ActiveRecord::Base
def validate
  puts 'In validate'
end

def validate_on_create
  puts 'In validate_on_create'
end

def validate_on_update
  puts 'In validate_on_update'
end
end

Now, when creating a new Foo using script/console, the output is as follows:

In validate
In validate_on_create

and when updating a Foo, the output looks like:

In validate
In validate_on_update