IsFalse

Version: 2.3
Edit this page

Warning: You are browsing the documentation for Symfony 2.3, which is no longer maintained.

Read the updated version of this page for Symfony 5.3 (the current stable version).

IsFalse

Validates that a value is false. Specifically, this checks to see if the value is exactly false, exactly the integer 0, or exactly the string "0".

Also see IsTrue.

Applies to property or method
Options
Class IsFalse
Validator IsFalseValidator

Basic Usage

The IsFalse constraint can be applied to a property or a "getter" method, but is most commonly useful in the latter case. For example, suppose that you want to guarantee that some state property is not in a dynamic invalidStates array. First, you'd create a "getter" method:

1
2
3
4
5
6
7
8
protected $state;

protected $invalidStates = array();

public function isStateInvalid()
{
    return in_array($this->state, $this->invalidStates);
}

In this case, the underlying object is only valid if the isStateInvalid method returns false:

  • Annotations
  • YAML
  • XML
  • PHP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
// src/AppBundle/Entity/Author.php
namespace AppBundle\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class Author
{
    /**
     * @Assert\IsFalse(
     *     message = "You've entered an invalid state."
     * )
     */
     public function isStateInvalid()
     {
        // ...
     }
}

Options

message

type: string default: This value should be false.

This message is shown if the underlying data is not false.

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.