feat: custom validation messages

[eaguad1337]

Some people would like to customize their app in their own language but Validator class doesn't allow us to specify which message should return if the validation fails.

To resolve it, I extended the validate method to accept a custom parameter messages that will be a dict with custom messages.

For example:

validate = request.validate(
    {
        "email": "required|email",
        "username": "required",
        "secondary_email": "required|email"
    },
    messages={
        "email.required": "Custom Message for required Email.",
        "email.email": "Custom Message for Email not being an email.",
        "username.required": "Custom Message for required Username."
    },
)

Will return:

{"email": ["Custom Message for required Email.", "Custom Message for Email not being an email."], "username": ["Custom Message for required Username."], "secondary_email": ["The secondary_email field is required.", "The secondary_email must be a valid email address."]}

Note that rules without custom message stays the same.

[josephmancuso]

why are tests not running on this? lol

[eaguad1337]

Which tests? I see them working