1. class
  2. Joomla
  3. CMS
  4. Form
  5. Rule
  6. ExistsRule

ExistsRule

class ExistsRule extends FormRule

Form rule class to determine if a value exists in a database table.

Methods

boolean
test( SimpleXMLElement $element, mixed $value, string $group = null, Registry $input = null, Form $form = null)

Method to test the username for uniqueness.

Details

boolean test( SimpleXMLElement $element, mixed $value, string $group = null, Registry $input = null, Form $form = null)

Method to test the username for uniqueness.

Parameters

SimpleXMLElement $element The SimpleXMLElement object representing the <field> tag for the form field object.
mixed $value The form field value to validate.
string $group The field name group control value. This acts as as an array container for the field. For example if the field has name="foo" and the group value is set to "bar" then the full field name would end up being "bar[foo]".
Registry $input An optional Registry object with the entire data set to validate against the entire form.
Form $form The form object for which the field is being tested.

Return Value

boolean True if the value is valid, false otherwise.