Question

I’m using devise as authentication engine in my app.
Is there any way to use custom messages when devise validation fails.
Devise provides me with the following message when the password is blank: Password can't be blank, but i need another message. How can i do it?

Answer 1

ActiveRecord en.yml is the answer I would suggest if you want to change the Validation Message for Devise

Here is how the en.yml should look like

en:
  activerecord:
    errors:
      models:
        user:
          attributes:
            email:
              blank: "Please Specify an Email id"
              taken: "Please use a different Email id"
              invalid: "Please Specify a valid Email id"
            password:
              blank: "Please Specify a Password"
              confirmation: "Password does not match"
            password_confirmation:
              blank: "Please Specify a Password Confirmation"
            first_name:
              blank: "Please Specify First Name"
            last_name:
              blank: "Please Specify Last Name"
        pdf:
          attributes:
            name:
              blank: "Please Specify name to PDF"
              taken: "Please use different name for PDF"
            attachment:
              blank: "Please Upload a PDF Attachment"
        data_element:
          attributes:
            name:
              blank: "Please give Element a desired name"
              taken: "Already Created Element with given name"
            color:
              blank: "Please assign a color to Element"
        template:
          attributes:
            name:
              blank: "Please Specify a Name"
              taken: "Please use a different name"

I advice you to define this way instead of customizing devise validation module

Because if you follow the above approach, it would be possible that you would skip a validation a place or two

for Example I the remove the above devise validation module and then substitue your own in
User Model

then all the validation would work for but you would miss the validation in Change Password

There by resulting your to login even though the password was never supplied and never given

Keep a loop of that too

Cheer

Regards