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 validate fields data is exists
13:  *
14:  * @author      Twin Huang <twinhuang@qq.com>
15:  */
16: class FieldExists extends BaseValidator
17: {
18:     protected $tooFewMessage = '%name% must contain at least %min% item(s)';
19: 
20:     protected $tooManyMessage = '%name% must contain no more than %max% items';
21: 
22:     protected $lengthMessage = '%name% must contain %length% item(s)';
23: 
24:     /**
25:      * Which fields should exists in validate data
26:      *
27:      * @var array
28:      */
29:     protected $fields = array();
30: 
31:     /**
32:      * How many fields should exist
33:      *
34:      * @var int
35:      */
36:     protected $length;
37: 
38:     /**
39:      * How many fields should exist at least
40:      *
41:      * @var int
42:      */
43:     protected $min;
44: 
45:     /**
46:      * How many fields should exist at most
47:      *
48:      * @var int
49:      */
50:     protected $max;
51: 
52:     /**
53:      * How many fields found in validate data
54:      *
55:      * @var int
56:      */
57:     protected $count;
58: 
59:     /**
60:      * {@inheritdoc}
61:      */
62:     protected function doValidate($input)
63:     {
64:         $this->count = 0;
65:         foreach ($this->fields as $field) {
66:             if ($this->validator->getFieldData($field)) {
67:                 $this->count++;
68:             }
69:         }
70: 
71:         if (!is_null($this->length) && $this->count != $this->length) {
72:             $this->addError('length');
73:             return false;
74:         }
75: 
76:         if (!is_null($this->min) && $this->count < $this->min) {
77:             $this->addError('tooFew');
78:             return false;
79:         }
80: 
81:         if (!is_null($this->max) && $this->count > $this->max) {
82:             $this->addError('tooMany');
83:             return false;
84:         }
85: 
86:         return true;
87:     }
88: }
89: