Validation problem

I am validating an invoice form and need to apply aconditional rule for the field pay_date: If the variable $status == attested then pay_date shall pass validation if it is empty or is a valid date. If $status != attested then pay_date must be empty to pass validation. How can I achieve that? ($status is created just before validation and is nota filed in the form)

LaryAI

1 year ago

Best Answer

Level 58

To achieve the conditional validation for the pay_date field based on the $status variable, you can use Laravel's Validator class with a custom rule. Here's how you can implement this:

use Illuminate\Support\Facades\Validator;

function validateInvoiceForm($data, $status)
{
    $rules = [
        'pay_date' => [
            function ($attribute, $value, $fail) use ($status) {
                if ($status === 'attested') {
                    // If status is 'attested', pay_date can be empty or a valid date
                    if (!empty($value) && !strtotime($value)) {
                        $fail('The ' . $attribute . ' must be a valid date.');
                    }
                } else {
                    // If status is not 'attested', pay_date must be empty
                    if (!empty($value)) {
                        $fail('The ' . $attribute . ' must be empty.');
                    }
                }
            },
        ],
    ];

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

    if ($validator->fails()) {
        return $validator->errors();
    }

    return 'Validation passed!';
}

// Example usage
$data = ['pay_date' => '2023-10-15'];
$status = 'attested';

$result = validateInvoiceForm($data, $status);
echo $result; // Outputs: Validation passed!

Explanation:

Custom Validation Rule: We define a custom validation rule using a closure. This allows us to apply logic based on the $status variable.
Condition for 'attested' Status: If $status is 'attested', the pay_date can be either empty or a valid date. We check if the pay_date is not empty and is a valid date using strtotime.
Condition for Other Statuses: If $status is not 'attested', the pay_date must be empty. We check if the pay_date is not empty and fail the validation if it is.
Validation Execution: We use Laravel's Validator::make to apply the rules to the data. If validation fails, we return the errors; otherwise, we return a success message.

This approach allows you to dynamically apply validation rules based on the $status variable.

Shivamyadav

1 year ago

Level 20

Try this

public function rules()
{
    $invoice = request()->route('invoice');
    $status = $invoice->status;

    return [
        'pay_date' => [
            'bail',
            function ($attribute, $value, $fail) use ($status) {
                if ($status === 'attested') {
                    // If status is 'attested', pay_date can be empty or a valid date
                    if (!empty($value) && !strtotime($value)) {
                        $fail('The ' . $attribute . ' must be a valid date when status is attested.');
                    }
                } else {
                    // If status is not 'attested', pay_date must be empty
                    if (!is_null($value) && trim($value) !== '') {
                        $fail('The ' . $attribute . ' must be empty when status is not attested.');
                    }
                }
            },
        ],
    ];
}

muuucho

1 year ago

Level 11

@Shivamyadav why bail?

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