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 existing table record
13:  *
14:  * @author      Twin Huang <twinhuang@qq.com>
15:  */
16: class RecordExists extends BaseValidator
17: {
18:     /**
19:      * The message added when query return empty result
20:      *
21:      * @var string
22:      */
23:     protected $notFoundMessage = '%name% not exists';
24: 
25:     /**
26:      * The message for negative mode
27:      *
28:      * @var string
29:      */
30:     protected $negativeMessage = '%name% already exists';
31: 
32:     /**
33:      * The name of table
34:      *
35:      * @var string
36:      */
37:     protected $table;
38: 
39:     /**
40:      * The field to search
41:      *
42:      * @var string
43:      */
44:     protected $field = 'id';
45: 
46:     /**
47:      * The data fetch from database
48:      *
49:      * @var array
50:      */
51:     protected $data = array();
52: 
53:     /**
54:      * Check if the input is existing table record
55:      *
56:      * @param string $input
57:      * @param string $table
58:      * @param string $field
59:      * @return bool
60:      */
61:     public function __invoke($input = null, $table = null, $field = 'id')
62:     {
63:         $table && $this->storeOption('table', $table);
64:         $field && $this->storeOption('field', $field);
65: 
66:         return $this->isValid($input);
67:     }
68: 
69:     /**
70:      * {@inheritdoc}
71:      */
72:     protected function doValidate($input)
73:     {
74:         if (!$this->isString($input)) {
75:             $this->addError('notString');
76:             return false;
77:         }
78: 
79:         $this->data = $this->db->find($this->table, array($this->field => $input));
80: 
81:         if (empty($this->data)) {
82:             $this->addError('notFound');
83:             return false;
84:         }
85: 
86:         return true;
87:     }
88: 
89:     /**
90:      * Returns the data fetch from database
91:      *
92:      * @return array
93:      */
94:     public function getData()
95:     {
96:         return $this->data;
97:     }
98: }
99: