Devise, Rails 5, custom errors for email

Question

I have Ajax registration with Rails 5 and Devise. This is

registrations_controller.rb

:

build_resource(sign_up_params)

byebug

    if resource.save

        if resource.active_for_authentication?

            sign_up(resource_name, resource)

            return render :json => {:success => true}

        else

        expire_data_after_sign_in!

            return render :json => {:success => true}

        end

    else

        return render :json => {:success => false}

    end

With

byebug

when I try to register with email that exist and debug with typing

resource.errors

, I see:

<ActiveModel::Errors:0x00000007254a48 @base=#<User id: nil, email: "email@email.com", role_id: 0, created_at: nil, updated_at: nil>, @messages={:email=>["has already been taken"]}, @details={:email=>[{:error=>:taken, :value=>"email@email.com"}]}>

If I type in the console

resource.errors.messages

, I see this:

{:email=>["has already been taken"]}

I know how to get the message or set for the example:

if resource.errors.details[:email][0][:error] == :taken

     return render :json => {:error=> "Email already in use."}

end

or add in the model

user.rb

:

validate :email_uniqueness



def email_uniqueness

    self.errors.add(:email, 'Email is already in use') if User.where(:email => self.email).exists?

end

, but I want to change default error message. I searched in the whole project for this message, but found nothing.

How can I change error message in Devise, when email is already in use ?

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Answer 1

This is a default Rails validation error message. Read this http://guides.rubyonrails.org/i18n.html#translations-for-active-record-models

You can change the message in *.en.yml file like this:

en:
  activerecord:
    errors:
      models:
        user:
          attributes:
            email:
              taken: is already in use

Devise, Rails 5, custom errors for email

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