Why validation triggers error in Laravel?

Question

Faced the problem while using Laravel 4 validation. Here's the code:

$validator = Validator::make(
              array(
                  'surname' => ['Laravel'],
              ),
              array(
                  'surname' => 'integer|alpha_dash'
              )
        );
        $validator->passes();        
        var_dump($validator->failed());

It causes error: Error: preg_match() expects parameter 2 to be string, array given

Lets suppose surname comes from user and it can be array or string.

I have two questions:

Why alpha_dash causes error instead of normal validation error?
Why validation continues to 'alpha_dash' rule after we got FALSE on 'integer' rule? Is this a bug?

Antonio Carlos Ribeiro · Accepted Answer · 2013-11-29 14:22:17Z

2

What I just did to test arrays:

Created some fields the way you are doing:

<input type="text" name="user[surname][0]">
<input type="text" name="user[surname][1]">

And validated one of them:

$validator = \Validator::make(
    Input::all(),
    array('user.surname.0' => 'required|min:5')
);

var_dump($validator->passes());

Then I just did it manually:

$validator = \Validator::make(
    array(
        'user' => ['surname' => [ 0 => 'Laravel'] ],
    ),
    array('user.surname.0' => 'required|min:5')
);

And it worked on both for me.

If you need to analyse something Laravel doesn't provide, you can extend the Validator by doing:

Validator::extend('foo', function($attribute, $value, $parameters)
{
    return $value == 'foo';
});

EDIT

But, yeah, there is a bug on it, if you do:

$validator = \Validator::make(
    array(
        'user' => ['surname' => [ 0 => 'Laravel'] ],
    ),
    array('user.surname.0' => 'integer|alpha_dash')
);

It will give you a

"Error: preg_match() expects parameter 2 to be string, array given".

Here's the Laravel issue posted by the OP: https://github.com/laravel/laravel/issues/2457.

edited Nov 29, 2013 at 14:22

answered Nov 29, 2013 at 12:36

Antonio Carlos Ribeiro

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9 Comments

trerums Over a year ago

I know that's an array. I'm asking why i have error instead of standart validation message? What if user posts an array?

Antonio Carlos Ribeiro Over a year ago

Because you are supposed to send the correct data to be processed by the validator, validator is expecting a string there, not an array.

trerums Over a year ago

print_r(\Input::all()); Array ( [surname] => Array ( [0] => Laravel ) )

Antonio Carlos Ribeiro Over a year ago

That's odd. Could you share your view?

trerums Over a year ago

Here's an example of get query: ?user[surname][0]=Laravel

|

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