[eluser]seba22[/eluser]
Hello,
How check is value in form validation is inside allowed values.
For example, user submit a listbox.
It can have some values for example
a
aa
aaa
So i need to make sure that some_listbox have value a or aa or aaa
When i dont use codeigniter i use statement:
Code: $allowed = array("a", "aa", "aaa");
if (in_array($_POST['someval'], $allowed)) {
// no hacking attempt
$val_for_db=$_POST['someval'];
}
else
{
//hacking attmpt , set default value
$val_for_db='aa';
}
I can clear see, that there is no option like this in manual... so i need to create it by my own.
I extend validation class and add this function:
Code: function valid_array_element($str, $allowed)
{
if (in_array($str, $allowed)) {
return TRUE;
}
else
{
return FALSE;
}
}
And i don't know how pass array
Code: $allowed = array("a", "aa", "aaa");
$this->form_validation->set_rules('admin_title', 'Somefield', 'required|valid_array_element[$array]');
But that's of course not working...
Do You have any idea ?
I think we can, serialize and base64 code, and just put this
Code: valid_array_element['.base64(serialize($array)).']')
But maybe there is other, bether way ?
[eluser]CroNiX[/eluser]
You can only pass strings via the 2nd parameter, so you need to do something like:
Code: $this->form_validation->set_rules('admin_title', 'Somefield', 'required|valid_array_element[' . implode(';', $array) . ']');
And then in your validation function, first line:
Code: function valid_array_element($str, $allowed)
{
$allowed = explode(';', $allowed);
//..rest of your code
}
[eluser]seba22[/eluser]
[quote author="CroNiX" date="1354387994"]You can only pass strings via the 2nd parameter, so you need to do something like:
Code: $this->form_validation->set_rules('admin_title', 'Somefield', 'required|valid_array_element[' . implode(';', $array) . ']');
And then in your validation function, first line:
Code: function valid_array_element($str, $allowed)
{
$allowed = explode(';', $allowed);
//..rest of your code
}
[/quote]
Thank You for reply.
It's working quite well.
What about displaying error ?
Drop down is a bad example, but i would like have error showing
You entered wrong value, allowed are a,aa,aaa
I was trying out to figure this by myself but i don't know...
I was trying to look at language file, for example here
Code: $lang['min_length'] = "The %s field must be at least %s characters in length.";
But how pass them separated via coma values 
Regards
[eluser]CroNiX[/eluser]
You can set the error message, and retrieve it. See the "callbacks" section of the form validation library in the user guide.
Code: function valid_array_element($str, $allowed)
{
$allowed = explode(';', $allowed);
if (in_array($str, $allowed))
{
return TRUE; //return TRUE, passed the rule
}
else
{
//failed rule, set error message and return FALSE
$this->form_validation->set_error('valid_array_element', 'The %s field can only be one of the following options: ' . implode(', ', $allowed));
return FALSE;
}
}
Then in your form, where this form element is, you'd show the individual error like any other validation error.
Code: echo form_error('name-of-field-this-rule-was-applied-on');
Which would show "The Somefield field can only be one of the following options: a, aa, aaa", if it failed.
[eluser]seba22[/eluser]
[quote author="CroNiX" date="1354399879"]You can set the error message, and retrieve it. See the "callbacks" section of the form validation library in the user guide.
Code: function valid_array_element($str, $allowed)
{
$allowed = explode(';', $allowed);
if (in_array($str, $allowed))
{
return TRUE; //return TRUE, passed the rule
}
else
{
//failed rule, set error message and return FALSE
$this->form_validation->set_error('valid_array_element', 'The %s field can only be one of the following options: ' . implode(', ', $allowed));
return FALSE;
}
}
Then in your form, where this form element is, you'd show the individual error like any other validation error.
Code: echo form_error('name-of-field-this-rule-was-applied-on');
Which would show "The Somefield field can only be one of the following options: a, aa, aaa", if it failed.[/quote]
Hello, thank You for reply.
I try Your code, but without success (i mean your idea is absolute OK, it's something wrong with my extension of CI_Form_Validation) i got ISE (Internal Server Error).
Inside file
Code: \libraries\MY_Form_validation.php
i have code
Code: <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class MY_Form_validation extends CI_Form_Validation {
function __construct()
{
parent::__construct();
}
function valid_array_element($str, $allowed)
{
$allowed = explode(';', $allowed);
if (in_array($str, $allowed)) {
return TRUE;
}
else
{
//failed rule, set error message and return FALSE
$CI = & get_instance();
$CI->form_validation->set_error('valid_array_element', 'The %s field can only be one of the following options: ' . implode(', ', $allowed));
return FALSE;
}
}
}
?>
Any idea what i do wrong?
I try,
$this->form_validation
but also without success, that's why i change to get_instance(); but without positive result.
Regards
[eluser]PhilTem[/eluser]
Well, I guess it's not working properly since you're extending a wrong class
Code: class MY_Form_validation extends CI_Form_validation
See the Form_validation is just a capitalized F not V.
Then $this-> should work as well for the language line.
Regarding the %s in the error fields, look at [url=http://php.net/manual/en/function.sprintf.php]sprintf[/php]
[eluser]CroNiX[/eluser]
Also, I showed you how to do a callback. If you extend the form validation library then it's unnecessary to do
$CI =& get_instance(), because $this IS the form validation library.
Try changing
Code: $CI = & get_instance();
$CI->form_validation->set_error('valid_array_element', 'The %s field can only be one of the following options: ' . implode(', ', $allowed));
to
Code: $this->set_error('valid_array_element', 'The %s field can only be one of the following options: ' . implode(', ', $allowed));
in addition to fixing the CI classname like PhilTem pointed out.
[eluser]seba22[/eluser]
Hello Friends,
No success, still Internal Server Error.
I corrected spell typo like PhilTem found, and make changes like You suggested.
Code: <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class MY_Form_validation extends CI_Form_validation {
function __construct()
{
parent::__construct();
}
function valid_array_element($str, $allowed)
{
$allowed = explode(';', $allowed);
if (in_array($str, $allowed)) {
return TRUE;
}
else
{
//failed rule, set error message and return FALSE
$this->set_error('valid_array_element', 'The %s field can only be one of the following options: ' . implode(', ', $allowed));
return FALSE;
}
}
}
?>
Hmmm
[eluser]CroNiX[/eluser]
What do your error logs show? What's the error message? How are you loading the validation library? What is the filename of your new MY_Form_validation.php fileand it's location? How are you setting the rules? You've changed things but aren't showing the rest of the code where you changed them.
[eluser]PhilTem[/eluser]
I see another, possible issue:
Code: function __construct($rules = array()) {
parent::__construct($rules);
}
Took me several hours the first time I extended the form-validation library to figure that out
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