Bug: validation level dont work as expected

[mozzar]

PHP Version

8.3

CodeIgniter4 Version

5.0.2

CodeIgniter4 Installation Method

Composer (using codeigniter4/appstarter)

Which operating systems have you tested for this bug?

Linux

Which server did you use?

fpm-fcgi

Database

MariaDB 10.6.18

What happened?

Validation does not work at higher levels of the array
look at the screenshot of my rules:

here is my request:

and here is validation:

Steps to Reproduce

create rules, eg:

$rules = [
            'cards' => 'required',
            'cards.*.fields' => 'required',
            'cards.*.fields.*' => 'required',
        ];

create json body for request:

$body = '{
  "cards": [
    {
      "fields": {"name": "name"}
    }
]
}';

write validate code:

$validation = service('validation');
$validation->setRules($rules);
 if (!$validation->run(json_decode($body, true))) {
            // handle validation errors
            print_r($validation->getErrors());
}

Expected Output

Validation should not show an error. Unless there are no "fields"

Anything else?

thanks.

[kenjis]

Thank you for reporting.

Please use the following format in the future.

```php
// PHP code
```

[kenjis]

In your sample data, there is no cards.*.fields field.

        $body = '{"cards": [{"fields": {"name": "name"}}]}';
        $data = json_decode($body, true);
        var_dump(array_flatten_with_dots($data));

array (size=1)
  'cards.0.fields.name' => string 'name' (length=4)

[kenjis]

@mozzar Can you describe the format of the data that you want to validate?

Also, there is a known bug #8006 in Validation with *.

[mozzar]

@mozzar Can you describe the format of the data that you want to validate?

Also, there is a known bug #8006 in Validation with *.

In your sample data, there is no cards.*.fields field.

        $body = '{"cards": [{"fields": {"name": "name"}}]}';
        $data = json_decode($body, true);
        var_dump(array_flatten_with_dots($data));

array (size=1)
  'cards.0.fields.name' => string 'name' (length=4)

so I can't validate that key "fields" exists?

here is my data dumped with var_dump:

array(1) {
  ["cards"]=>
  array(1) {
    [0]=>
    array(1) {
      ["fields"]=>
      array(1) {
        ["name"]=>
        string(5) "value"
      }
    }
  }
}

it seems to me that it should be possible to add a rule that checks whether the key "fields" exists or not.
"field_exists" mentioned by you in #8006 solves my problem

[kenjis]

The data is:

'cards.0.fields.name' => 'value'

If all data is like that, you can write the validation rule:

[
    'cards.0.fields.name' => 'required',
]

so I can't validate that key "fields" exists?

You can use the rule field_exists.

[mozzar]

The data is:

'cards.0.fields.name' => 'value'

If all data is like that, you can write the validation rule:

[
    'cards.0.fields.name' => 'required',
]

so I can't validate that key "fields" exists?

You can use the rule field_exists.

I edited my previous comment, yes it fixes my problem.
sorry for the unnecessary post.
I will close this issue.