Backend validation for registration form

This topic has 10 replies, 4 voices, and was last updated 2 years, 7 months ago by Long Nguyen.

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August 17, 2018 at 8:32 PM #11040

Harold
Participant

Hi,

I need to do some backend validation on the custom fields of the registration form. For example, i'd like to check if the invitation code during registration is correct, and if not prevent registration of a new user and echo "Incorrect invitation code" on the registration form. I tried different things with the "rwmb_profile_validate" hook, but it didn't work.

https://ghostbin.com/paste/5oh7p

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August 18, 2018 at 3:34 AM #11049
Harold
Participant
This is the code so far. How do I echo a warning if the invitation code from the registration form is incorrect?
```
// Validation for metabox registration form
add_filter( 'rwmb_profile_validate', function( $is_valid, $config ) {
    if ( 'invitation_verification' === $config['id'] ) {
        if ( '123' !== $_POST['invitation_code'] ) {
            // do NOT register new user and echo "Incorrect invitation code" on the registration form
        }
    }
    return $is_valid;
}, 10, 2 );
```
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July 11, 2021 at 11:23 PM #29428

eckharda
Participant

I have the same problem.

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July 12, 2021 at 10:50 AM #29435
Long Nguyen
Moderator
Hi @fdk3r6bgmail-com,

Can you please share the code that validates your form? The variable $is_valid should be assigned to false if the condition does not match.
```
add_filter( 'rwmb_profile_validate', function( $is_valid, $config ) {
    if ( 'invitation_verification' === $config['id'] ) {
        if ( '123' !== $_POST['invitation_code'] ) {
            $is_valid = false;
        }
    }
    return $is_valid;
}, 10, 2 );
```
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July 12, 2021 at 12:16 PM #29437

eckharda
Participant

The method I use is wp_die('error text');
rwmb_profile_validate can validate
But it cannot return custom error messages
I wish there was a perfect solution too
Because I don't want to use ajax to validate unique data

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July 12, 2021 at 3:36 PM #29439

Long Nguyen
Moderator

Hi,

This filter only helps you to validate the form based on the condition, does not support showing the custom error message. You can use the plugin Loco Translate to translate the default message Invalid form submit.

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July 12, 2021 at 4:46 PM #29447

eckharda
Participant

It's just a shame that i can't customize the error message
I hope to see this amendment later.

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July 12, 2021 at 6:50 PM #29453
eckharda
Participant
It's a bad way to go, but it works for me.

open \meta-box-aio\vendor\meta-box\mb-user-profile\src\Forms\Base.php
```
if (!$is_valid) {
            $this->error->set(__('Invalid form submit.', 'mb-user-profile'));
            return null;
}
```
modify to
```
if (!$is_valid[0]){
            $this->error->set($is_valid[1]);
            return null;
}
```
```
add_filter( 'rwmb_profile_validate', function( $is_valid, $config ) {
    if ( 'invitation_verification' === $config['id'] ) {
        if ( '123' !== $_POST['invitation_code'] ) {
            $is_valid = [false,'Error Text'];
        }
    }
    return $is_valid;
}, 10, 2 );
```
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July 12, 2021 at 9:36 PM #29457

Long Nguyen
Moderator

Hi,

Thanks for the feedback.

I'm going to inform the developer team to consider adding custom error text to the to-do list for the future development of the plugin.

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March 31, 2022 at 10:49 PM #35388

Nicholas Cox
Participant

Hi, did this feature ever get implemented at all?

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April 1, 2022 at 10:49 AM #35392
Long Nguyen
Moderator
Hi Nicholas,

Yes, it is implemented. Works like the frontend form validate https://docs.metabox.io/extensions/mb-frontend-submission/#validation
```
add_filter( 'rwmb_profile_validate', function( $validate, $config ) {
    if ( 'your-meta-box-id' !== $config['id'] ) {
        return $validate;
    }
    if ( empty( $_POST['image_upload_field'] ) ) {
        $validate = 'Please select at least one image to upload'; // Return a custom error message
    }
    return $validate;
}, 10, 2 );
```
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