Codeigniter validation form does not allow accents and other "br" characters

Question

I’m using the rule "alpha_numeric_spaces" to validate letters and numbers with space, but when I use some special character or letters like "ç", the validation does not pass, there is some way around this or just creating a special rule?

Ex:

 $validator->set_rules('nome', 'Nome', 'min_length[3]|max_length[60]|alpha_numeric_spaces');

Answer 1

You need to create your own rule. Just look at the implementation alpha_numeric_spaces codeigniter:

public function alpha_numeric_spaces($str) {
    return (bool) preg_match('/^[A-Z0-9 ]+$/i', $str);
}

That is to say, insensitively (/i) will validate strings containing only 1 or more (+$) letters from A to Z, digits from 0 to 9 or spaces. And you will need to \p{L} in the validation regex of its input, to pass any accented character of the Latin alphabet, including c:

$validator->set_rules('nome', 'Nome', array('trim', 'regex_match[/[\p{L}0-9 ]+$/i]'));

Otherwise you can just add the c within the rule: [A-Z0-9Ç ].