Laravel Validation Only Validate Regex if Field Not Empty

Question

my form have youtube_url field, its not required..
but if user fill this field, i must validate the url using regex..

'youtube_video' => [
    'regex:/(http:\/\/|https:\/\/|)(www.)?(youtu(be\.com|\.be))\/(video\/|embed\/|watch\?v=|v\/)?([A-Za-z0-9._%-]*)(\&\S+)?/'
],

the regex works well, but its throw error if field is not fill (empty) .
how can validate only when user fill the field.

I think the nullable rule before your regex one will solve your problem. — SystemGlitch
– SystemGlitch, Commented Apr 25, 2018 at 15:57
Possible duplicate of Laravel Request Validation Regex without Required — revo
– revo, Commented Apr 25, 2018 at 16:02

Pavel · Accepted Answer · 2018-04-25 16:03:03Z

5

You shoul use nullable rule for it:

$this->validate($request, [
        'youtube_video' => [
            'regex:/(http:\/\/|https:\/\/|)(www.)?(youtu(be\.com|\.be))\/(video\/|embed\/|watch\?v=|v\/)?([A-Za-z0-9._%-]*)(\&\S+)?/',
            'nullable'
        ],
    ]);

answered Apr 25, 2018 at 16:03

Pavel

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1 Comment

Chad Over a year ago

The "nullable" validation rule is exactly what I was looking for, thanks!

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