+- CodeIgniter Forums (https://forum.codeigniter.com)
+-- Forum: CodeIgniter 4 (https://forum.codeigniter.com/forumdisplay.php?fid=28)
+--- Forum: CodeIgniter 4 Support (https://forum.codeigniter.com/forumdisplay.php?fid=30)
+--- Thread: model validationRules for nullable fields? (/showthread.php?tid=81022)
model validationRules for nullable fields? - lukmim - 01-14-2022
Is there a way of setting up model validation (for example "integer" or "numeric") for fields that are not required and also can be null?
I'm aware of the "if_exist" (doesn't allow null values) and "permit_empty" (permits also some non-null invalid values) rules, and also I figured "callback_" probably can't be used for this (unless I recreate all needed validation rules with callbacks that would allow null, for example callback_nullableInteger, callback_nullableNumeric, callback_nullableAlphaNumeric etc)
RE: model validationRules for nullable fields? - BilltheCat - 01-14-2022
You could always wrap your rules in normal PHP logic... I'm not sure what rules you could apply in this case, but this might be what you're looking for:
PHP Code:
$post = $this->request->getPost();
$rules = [
'username' => [
'rules' => 'required',
'errors' => [
'required' => 'You must choose a Username.',
],
],
'email' => [
'rules' => 'required|valid_email',
'errors' => [
'valid_email' => 'Please check the Email field. It does not appear to be valid.',
],
],
];
if(is_int($post['fieldname']) || is_numeric($post['fieldname']) is_null($post['fieldname'])) {
$rules['fieldname'] = [
'rules' => 'is_unique'
];
}
$validation->setRules($rules);
RE: model validationRules for nullable fields? - kenjis - 01-14-2022
It seems you are correct and there is no good way to do accept only null or integer.
(01-14-2022, 08:41 AM)lukmim Wrote: "permit_empty" (permits also some non-null invalid values) rules
What values are some non-null invalid values?
RE: model validationRules for nullable fields? - lukmim - 01-17-2022
(01-14-2022, 04:22 PM)kenjis Wrote: What values are some non-null invalid values?
empty array, empty string, and false