ssn-field.inc.php

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<?php
class SSNField extends CollectionField
{
    public function __construct($name, Form &$parentForm, array $attribs = array())
    {
        $attribs['fields'] = array(
            array('TextField', "${name}_1", array('size' => 3, 'regExp' => '/^[0-9]{3}$/', 'maxlength' => 3)),
            array('LabelField', "${name}_dash1", array('text' => '-')),
            array('TextField', "${name}_2", array('size' => 2, 'regExp' => '/^[0-9]{2}$/', 'maxlength' => 2)),
            array('LabelField', "${name}_dash2", array('text' => '-')),
            array('TextField', "${name}_3", array('size' => 4, 'regExp' => '/^[0-9]{4}$/', 'maxlength' => 4))
        );

        parent::__construct($name, $parentForm, $attribs);

        $this->autoAdvance = true;
    }

    public function validate()
    {
        # call parent to validate individual text fields
        parent::validate();

        # If any of the sub fields have input automatically all sub fields _must_ have input
        if(!$this->allFieldsHaveData() && !$this->noFieldsHaveData())
        {
            $this->hasError = true;
            $this->errorMessage = "The $this->title field must be a valid SSN number.";
        }
    }


    public function getData()
    {
        $ret = $this->fields[0]->getData() . '-' . $this->fields[2]->getData() . '-' . $this->fields[4]->getData();
        
        # Check for empty values
        if($ret == '--')
            return null;

        return $ret;
    }


    public function setData($data)
    {
        # This nasty huge regex matches 123-45-6789, 123 45 6789, and 123456789
        if(preg_match('/(^|\s)(00[1-9]|0[1-9]0|0[1-9][1-9]|[1-6]\d{2}|7[0-6]\d|77[0-2])(-?|[\. ])([1-9]0|0[1-9]|[1-9][1-9])\3(\d{3}[1-9]|[1-9]\d{3}|\d[1-9]\d{2}|\d{2}[1-9]\d)($|\s|[;:,!\.\?])/', $data, $matches))
        {
            $this->fields[0]->setData($matches[2]);
            $this->fields[2]->setData($matches[4]);
            $this->fields[4]->setData($matches[5]);
        }
        elseif($data != '')
            throw new InvalidValueException();
    }

    public function getSqlImpl()
    {
        return "$this->name = '" . $this->getData() . "'";
    }
}
?>

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