Rails where to place your Activemodel::validators

Question

This is a two part question. Part one if my Model that i am writing the validations for is inhering from `ActiveRecord::Base` do i need to `include ActiveModel::Validations` within that class?? the API for rails doesnt say but here in yehudakatz blog seems to hint that? part two is where would be the best place to put these validator files? under helpers or as a new model or in lib? my current validator looks like this ``` class GenderValidator < ActiveModel::validator def validate(record) cred = /(\d{6})(\d{4})(\d{1})(\d{2})/.match(record.id_number.to_s) #breaks up the id into the relevent sections namely birthdate, gender, nationality, validator. unless cred[0][/\d{13}/] #checks to see if the id is a valid length of numbers if it isnt then skip the validation of gender return true else birthdate = cred[1] #returns a 6 digit string 'yymmdd' parsed_gender = cred[2] #returns a 4 digit string '0001-4999:female 5000-9999:male' nationality = cred[3] # should return either a 1 or a 0 1 if…

Accepted Answer

You do not need include ActiveModel::Validations

My preference to to keep the validation objects in the model folder.

So for model Gender you have a file gender.rb

For the validator GenderValidator you have the file gender_validator.rb

So both files site together in the model folder.

Here is a validator for my Newsletter model

```
class NewsletterValidator < ActiveModel::Validator
  def validate(record)
      if record.send_test_email
        if test_email_address.blank?
          record.errors[:test_email_address] << "Test email address is blank"
        end
        if record.send_email_to_subscribers
          record.errors[:send_test_email] << "You cannot send a test and send to subscribers at the same time"
        end
      end

end
end
```

In my Newsletter model I simply have

```
  validates_with NewsletterValidator
```

You have a spelling mistake in your example

You have

```
class GenderValidator < ActiveModel::validator
```

It should be

```
class GenderValidator < ActiveModel::Validator
```

Note the capital V

Rails where to place your Activemodel::validators

Solution

Problem