Create a custom Validation rule that accepts two input parameters

Question

I've created a custom Validation rule that accepts one input argument.

Validator::extend('dns', function($attribute, $host, $parameters)
{
    return ($host !== gethostbyname($host));
});

The rules

public static $rules = array(
    'nameserver'    => 'dns'
);

I have created a new file called validators.php and include it in the global.php file in order to be global.

I want to pass two input arguments in order to make some more checks compare to each other. How can I succeed this?

Rob Gordijn · Accepted Answer · 2013-09-07 08:50:24Z

1

send extra parameters like:

public static $rules = array(
    'nameserver'    => 'dns:foobar'
);

and access those via:

$parameters[0]

in the closure.

[edit] A way to seed the validator rules with input:

// model
static $rules = array(
     'valOne' => 'required|custom:%s'
    ,'valTwo' => 'required'
);

// controller
$inputValues = Input::only(array(
     'valOne'
    ,'valTwo'
));

$rules = MyModel::$rules;

$rules['valOne'] = sprintf($rules['valOne'], Input::get('valTwo'));

$validator = Validator::make($inputValues, $rules);

edited Sep 7, 2013 at 8:50

answered Sep 6, 2013 at 8:57

Rob Gordijn

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7 Comments

giannis christofakis Over a year ago

My rules are inside my model. Your above example passes string 'foobar' inside my filter. How am I going to pass the value of the 'foobar' input field?

Rob Gordijn Over a year ago

Does the 'dns' validation really needs values from other inputs? Perhaps you can validate those in a seperate validation rule. If not, perhaps you can do something with str_replace for the value in $rules['nameserver'] with input::get('foobar'). (when creating the validator)

giannis christofakis Over a year ago

My goal is to validate if ip points to the DNS that was given. So I need both input field. I assume there is no such a thing built-in in Laravel. I guess I can say Input::get(), but isn't there a better option?

Rob Gordijn Over a year ago

Not at the moment without a 'dirty' fix (aka feeding input vars in the rules while building the validator). Checkin ip and dns seems like a task wich can take some time, maybe suitable for a background process?

user1669496 Over a year ago

I think I'd prefer to use session variables rather than Input::get().

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