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phplaravellaravel-validation

Pass current instance to validator in laravel

In laravel 5.3 can I pass as parameter for rule current instance of model?

I want the rule which checks current value of some field in my model and allows or denies to set this field to another value.

The problem is: validator receives only new value, but I also want to check old value.

Solution

  • If this is still necessary:

    You can use fourth argument $customAttributes of the static method Illuminate\Support\Facades\Validator::make. In this argument you can pass anything you want, in your case - specific instance of the model:

    $order = new Order(); // <!-- create or load for DB instance of your model

/*
 * create validator for validation of the some $requestForValidation
 * by some $validationRules
*/
$validator = \Illuminate\Support\Facades\Validator::make($requestForValidation,
$validationRules, [], [
    'instance' => $order,
]);

    And in your custom validation rule you can reach this custom attributes like this:

    Validator::extend('customValidationRule', function ($attribute, $value, 
$parameters, $validator) {
    $validator->customAttributes['instance']; // <!-- here is your instance
});