Class **Phalcon\\Mvc\\Model\\Validator\\Uniqueness**
====================================================

*extends* abstract class :doc:`Phalcon\\Mvc\\Model\\Validator <Phalcon_Mvc_Model_Validator>`

*implements* :doc:`Phalcon\\Mvc\\Model\\ValidatorInterface <Phalcon_Mvc_Model_ValidatorInterface>`

.. role:: raw-html(raw)
   :format: html

:raw-html:`<a href="https://github.com/phalcon/cphalcon/blob/master/phalcon/mvc/model/validator/uniqueness.zep" class="btn btn-default btn-sm">Source on GitHub</a>`

Validates that a field or a combination of a set of fields are not present more than once in the existing records of the related table  

.. code-block:: php

    <?php

    use Phalcon\Mvc\Model;
    use Phalcon\Mvc\Model\Validator\Uniqueness;
    
    class Subscriptors extends Model
    {
    
      public function validation()
      {
          $this->validate(new Uniqueness(array(
              "field"   => "email",
              "message" => "Value of field 'email' is already present in another record"
          )));
          if ($this->validationHasFailed() == true) {
              return false;
          }
      }
    }



Methods
-------

public  **validate** (:doc:`Phalcon\\Mvc\\EntityInterface <Phalcon_Mvc_EntityInterface>` $record)

Executes the validator



public  **__construct** (*array* $options) inherited from :doc:`Phalcon\\Mvc\\Model\\Validator <Phalcon_Mvc_Model_Validator>`

Phalcon\\Mvc\\Model\\Validator constructor



protected  **appendMessage** (*string* $message, [*string* | *array* $field], [*string* $type]) inherited from :doc:`Phalcon\\Mvc\\Model\\Validator <Phalcon_Mvc_Model_Validator>`

Appends a message to the validator



public  **getMessages** () inherited from :doc:`Phalcon\\Mvc\\Model\\Validator <Phalcon_Mvc_Model_Validator>`

Returns messages generated by the validator



public *array* **getOptions** () inherited from :doc:`Phalcon\\Mvc\\Model\\Validator <Phalcon_Mvc_Model_Validator>`

Returns all the options from the validator



public  **getOption** (*mixed* $option, [*mixed* $defaultValue]) inherited from :doc:`Phalcon\\Mvc\\Model\\Validator <Phalcon_Mvc_Model_Validator>`

Returns an option



public  **isSetOption** (*mixed* $option) inherited from :doc:`Phalcon\\Mvc\\Model\\Validator <Phalcon_Mvc_Model_Validator>`

Check whether an option has been defined in the validator options