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+--- Thread: Form Validation - Requiring one input OR the other (/showthread.php?tid=13927)
Form Validation - Requiring one input OR the other - El Forum - 12-11-2008
[eluser]gstjohn[/eluser]
I'm new to CodeIgniter, but love it already. Was hoping to get a hand with some confusion with the form validation. Best as I can tell there is nothing about it specifically on this forum.
I have a form that collects city and state OR zip code. I can't for the life of me figure out how to validate this with CI. Obviously just using required for all three doesn't cut it since it's an OR situation. Best as I can tell a callback won't work either.
Am I just being ridiculous and not seeing the solution? If there is no way to check this with the validation library, how would I validate it myself and push the error message to the view?
Thanks in advance!
Form Validation - Requiring one input OR the other - El Forum - 12-12-2008
[eluser]missionsix[/eluser]
use an if statement to check if the fields are filled, before you build your requirements. As such:
Code:
<?php
$this->load->library('form_validation');
$this->form_validation->set_error_delimiters('<p class="error">', '</p>');
if(empty($this->input->post('zipcode')) {
$this->form_validation->set_rules('city', 'City', 'trim|required');
$this->form_validation->set_rules('state', 'State', 'trim|required');
} else {
$this->form_validation->set_rules('zip', 'Zip Code', 'trim|required');
}
if($this->form_validation->run()=== false) {
// display errors
} else {
//save form
}
?>Rules are set after the form is sent to the browser, so you still have access to $_POST vars from there in ($this->input->post(KEY); ). Hope that helps.
Form Validation - Requiring one input OR the other - El Forum - 12-12-2008
[eluser]gstjohn[/eluser]
Wow! Duh...
That seems so obvious after having seen it. Definitely appreciate the direction!
Form Validation - Requiring one input OR the other - El Forum - 12-12-2008
[eluser]gstjohn[/eluser]
Small note: empty() cannot check the return value of a function or method.
Code:
if (empty($this->input->post('zipcode'))) { ... }You will get an error saying:
Quote:Fatal error: Can't use method return value in write context in ...
Corrected syntax will need to be:
Code:
$zipcode = $this->input->post('zipcode');
if (empty($zipcode)) { ... }