1: <?php
 2: /**
 3:  * Wei Framework
 4:  *
 5:  * @copyright   Copyright (c) 2008-2015 Twin Huang
 6:  * @license     http://opensource.org/licenses/mit-license.php MIT License
 7:  */
 8: 
 9: namespace Wei\Validator;
10: 
11: /**
12:  * Check if the input is provided
13:  *
14:  * @author      Twin Huang <twinhuang@qq.com>
15:  */
16: class Required extends BaseValidator
17: {
18:     protected $requiredMessage = '%name% is required';
19: 
20:     /**
21:      * Whether the input is required or not
22:      *
23:      * @var bool
24:      */
25:     protected $required = true;
26: 
27:     /**
28:      * The invalid variable values
29:      *
30:      * @var array
31:      */
32:     protected $invalid = array(null, '', false, array());
33: 
34:     /**
35:      * {@inheritdoc}
36:      */
37:     public function __invoke($input, $required = null)
38:     {
39:         is_bool($required) && $this->storeOption('required', $required);
40: 
41:         return $this->isValid($input);
42:     }
43: 
44:     /**
45:      * {@inheritdoc}
46:      */
47:     protected function doValidate($input)
48:     {
49:         if ($this->required && $this->isInvalid($input)) {
50:             $this->addError('required');
51:             return false;
52:         }
53:         return true;
54:     }
55: 
56:     /**
57:      * Check if the input is in invalid variables
58:      *
59:      * @param mixed $input
60:      * @return bool
61:      */
62:     public function isInvalid($input)
63:     {
64:         return in_array($input, $this->invalid, true);
65:     }
66: }
67: