Difference between revisions of "JFormRuleUsername/test"
From Joomla! Documentation
< API16:JFormRuleUsername
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Revision as of 21:54, 13 May 2013
The "API16" namespace is an archived namespace. This page contains information for a Joomla! version which is no longer supported. It exists only as a historical reference, it will not be improved and its content may be incomplete and/or contain broken links.
Description[edit]
Method to test if a username is unique.
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Syntax[edit]
test(&$field, &$values)| Parameter Name | Default Value | Description |
|---|---|---|
| &$field | $field A reference to the form field. | |
| &$values | $values The values to test for validiaty. |
Returns[edit]
mixed on invalid rule, true if the value is valid, false otherwise.
Defined in[edit]
libraries/joomla/form/rules/username.php
Importing[edit]
jimport( 'joomla.form.rules.username' );Source Body[edit]
public function test(&$field, &$values)
{
$return = false;
$name = (string)$field->attributes()->name;
$key = (string)$field->attributes()->field;
$value = isset($values[$key]) ? $values[$key] : 0;
// Check the rule.
if (!$key) {
return new JException('Invalid Form Rule :: '.get_class($this));
}
// Check if the username is unique.
$db = &JFactory::getDbo();
$db->setQuery(
'SELECT count(*) FROM `#__users`' .
' WHERE `username` = '.$db->Quote($values[$name]) .
' AND '.$db->nameQuote($key).' != '.$db->Quote($value)
);
$duplicate = (bool)$db->loadResult();
// Check for a database error.
if ($db->getErrorNum()) {
return new JException('Database Error :: '.$db->getErrorMsg());
}
if (!$duplicate) {
$return = true;
}
return $return;
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Examples[edit]
<CodeExamplesForm />