silverstripe-framework/forms/RestrictedTextField.php

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<?php
/**
* A Text field that cannot contain certain characters
* @package forms
* @subpackage fields-formatted
*/
class RestrictedTextField extends TextField {
protected $restrictedChars;
function __construct($name, $title = null, $value = "", $restrictedChars = "", $maxLength = null){
$this->restrictedChars = $restrictedChars;
parent::__construct($name, $title, $value, $form);
}
function Field() {
Requirements::javascript( SAPPHIRE_DIR . '/javascript/UniqueFields.js' );
if($this->maxLength){
$field = "<input class=\"text restricted\" type=\"text\" id=\"" . $this->id() . "\" name=\"{$this->name}\" value=\"" . $this->attrValue() . "\" maxlength=\"$this->maxLength\" />";
}else{
$field = "<input class=\"text restricted\" type=\"text\" id=\"" . $this->id() . "\" name=\"{$this->name}\" value=\"" . $this->attrValue() . "\" />";
}
return $field."<input type=\"hidden\" name=\"restricted-chars[".$this->id()."]\" id=\"".$this->id()."-restricted-chars\" value=\"".$this->restrictedChars."\" />";
}
}
?>