Laravel 5.6 Validation Regex for empty string

Question

I want to check phone string with Validator. The code is above.

$rules = [
    'phone' => 'regex:/^09\d{8}$/'
];
$messages = [
    'phone.regex' => 'INVALID_PHONE',
];

Test 1:

$data = [
    'phone' => 'test'
];
$vali = Validator::make($data, $rules, $messages);

dd($vali->errors()->first()); // I got "INVALID_PHONE". That's I exactly expected.

Test 2:

$data = [
    'phone' => ''
];
$vali = Validator::make($data, $rules, $messages);

dd($vali->errors()->first()); // I got "". I expected it is "INVALID_PHONE"

What I missing?

I want to use only regex.

My fault, simon's right, i misread your requirement

Devon Bessemer
– Devon Bessemer

2018-09-05 21:22:14 +00:00
Commented Sep 5, 2018 at 21:22 — Devon Bessemer
– Devon Bessemer, Commented Sep 5, 2018 at 21:22
"$errors->errors()" Like "MessageBag{ #message: [] }"

Evan
– Evan

2018-09-05 21:23:35 +00:00
Commented Sep 5, 2018 at 21:23 — Evan
– Evan, Commented Sep 5, 2018 at 21:23

Simon R · Accepted Answer · 2018-09-05 21:38:15Z

3

It's because it needs to be required as well;

$rules = [
    'phone' => 'required|regex:/^09\d{8}$/'
];

When you pass an empty string the validation passes because the phone field is not required so because it's empty it does not check the regex. As soon as it's not an empty field it will check the regex pattern

edited Sep 5, 2018 at 21:38

answered Sep 5, 2018 at 21:20

Simon R

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6 Comments

Evan Over a year ago

That's working! Thank you. But I still want to know why regex is not working.

Simon R Over a year ago

How is it not working? Is it not working because when you type 0900000000 it still errors or because you need the required param?

Evan Over a year ago

I expect the string like 0900000000 But why empty string is passed

Simon R Over a year ago

When you pass an empty string the validation passes because the phone field is not required so because it's empty it does not check the regex. As soon as it's not an empy field it will check the regex pattern.

Evan Over a year ago

Thank you for the explanation. Now I understand !!

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