CodeIgniter Validation Callback not being Called

My callback function from validation rules isn’t being called. The other validation rules for that field ARE being called

$rules[‘login_name’] = “required|max_length[12]|alpha_dash|callback__check_login_name”;
function _check_login_name($login_name) {
    echo "here"; // DOESNT WORK
 }

So in the above line, required, max_length, alpha_dash are bein开发者_开发技巧g called, but the callback isn't. Thanks!

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It could be that the method is somehow not readable out of scope. Does it work when you simply call _check_login_name manually (from outside of the class)? If that is not the issue, then have you tried placing echo's in the system folder's Form_validation.php? Place a series in after line 581. After that, more code will be needed in order to give more help.

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For testing, try this instead of the echo:

function _check_login_name($login_name) {
    $this->form_validation->set_message('_check_login_name', 'The callback was called.');
    return FALSE;
}

Per the callbacks entry in the CI manual: "If your callback returns anything other than a boolean TRUE/FALSE it is assumed that the data is your newly processed form data."

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I have a feeling that you're using the old validation class. Try the new Form Validation Class. I think there was a bug with that in the old one.