Validation Class

Derek Jones edited this page Jul 5, 2012 · 7 revisions
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I have a small fix to make validation class more flexible.


...
<form>
    <input type="text" name="search[query]">
</form>
...

In this case validation class is not really helpful as we can declare as a rule just field in the first level array. What if you want to have n level array ?

TO DO:

1. Add just after :


class CI_Validation {
...

new var


var $_inputdata            = array();

2. Replace all $_POST vars to : (ctrl+h)

$this->_inputdata

3. You need to add this function into Validation library : (system/libraries/Validation.php)


    function parse_rules($data)
    {
        if( ! is_array($data))
        {
            return false;
        }
        else
        {
            foreach($data as $eval_array => $rules) {
                $to_eval = explode(",", $eval_array);
                $this->_inputdata[$eval_array]  = eval('return $_POST[\''.implode("']['", $to_eval).'\'];');
            }
        }
    }

4. in set_rules() function add one line just before foreach :


    function set_rules($data, $rules = '')
    {
        if ( ! is_array($data))
        {
            if ($rules == '')
                return;

            $data[$data] = $rules;
        }

        $this->parse_rules($data); // Add this line

        foreach ($data as $key => $val)
        {
            $this->_rules[$key] = $val;
        }
    }

*Sample : *


...
<form>
    <input type="text" name="search[query]">
</form>
...

    $rules['search,query']  = "required"; 
    // You can add n level array i.e. $rules['level1,level2,level3,level4,...']
    // what will be in fact $_POST['level1']['level2']['level3']['level4'][...]

    $this->CI->validation->set_rules($rules);

    if ($this->CI->validation->run() !== FALSE) {
         echo 'OK';
    }