silverstripe-framework/forms/AjaxUniqueTextField.php

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<?php
/**
* Text field that automatically checks that the value entered is unique for the given
* set of fields in a given set of tables
* @package forms
* @subpackage fields-formattedinput
*/
class AjaxUniqueTextField extends TextField {
protected $restrictedField;
protected $restrictedTable;
// protected $restrictedMessage;
protected $validateURL;
protected $restrictedRegex;
function __construct($name, $title, $restrictedField, $restrictedTable, $value = "", $maxLength = null, $validationURL = null, $restrictedRegex = null ){
$this->maxLength = $maxLength;
$this->restrictedField = $restrictedField;
$this->restrictedTable = $restrictedTable;
$this->validateURL = $validationURL;
$this->restrictedRegex = $restrictedRegex;
parent::__construct($name, $title, $value);
}
function Field($properties = array()) {
Requirements::javascript(THIRDPARTY_DIR . "/prototype/prototype.js");
Requirements::javascript(THIRDPARTY_DIR . "/behaviour/behaviour.js");
Requirements::add_i18n_javascript(SAPPHIRE_DIR . '/javascript/lang');
Requirements::javascript(SAPPHIRE_DIR . "/javascript/UniqueFields.js");
$url = Convert::raw2att( $this->validateURL );
if($this->restrictedRegex)
$restrict = "<input type=\"hidden\" class=\"hidden\" name=\"{$this->name}Restricted\" id=\"" . $this->id() . "RestrictedRegex\" value=\"{$this->restrictedRegex}\" />";
$attributes = array(
'type' => 'text',
'class' => 'text' . ($this->extraClass() ? $this->extraClass() : ''),
'id' => $this->id(),
'name' => $this->getName(),
'value' => $this->Value(),
'tabindex' => $this->getAttribute('tabindex'),
'maxlength' => ($this->maxLength) ? $this->maxLength : null
);
return $this->createTag('input', $attributes);
}
function validate( $validator ) {
$result = DB::query(sprintf(
"SELECT COUNT(*) FROM \"%s\" WHERE \"%s\" = '%s'",
$this->restrictedTable,
$this->restrictedField,
Convert::raw2sql($this->value)
))->value();
if( $result && ( $result > 0 ) ) {
$validator->validationError( $this->name, _t('Form.VALIDATIONNOTUNIQUE', "The value entered is not unique") );
return false;
}
return true;
}
}