1条消息，用于多个required_without规则

Question

I have 2 (contact telephone and contact mobile) fields in a form which either A OR B need to be filled.

I'm validating the form using laravel request validation and the required_without rule, which looks like this.

'contact_telephone' => 'required_without:contact_mobile',
'contact_mobile' => 'required_without:contact_telephone',

So with this code it specifies that one of the 2 fields must be filled.

The error is that if I try to submit the form without filling either one in, the error message shows twice.

How would I show the message just once? Or is there a better rule to achieve this instead of required_without that i'm missing?

Answer 1

After playing around with it, I realised that only 1 of the required_without are actually required.

The logic is quite simple, the required validation (whatever one used) only fires for empty fields. If I specify that the contact telephone is required when the mobile is empty like so

'contact_telephone' => 'required_without:contact_mobile',

Then it will work for all 3 possible options.

1. If I fill out the mobile and not the telephone then the mobile is no longer empty and the telephone field isn't required anymore (Passes validation).

2. If I fill neither out, then the mobile is empty, and the telephone is then required, thus displaying 1 error message (Fails Validation).

3. If I fill out the telephone then it does not worry about the mobile validation as the telephone is not empty anyway (Passes validation).

This means that either one of the 2 fields are required, but it will only display 1 error message and requires 1 rule.