Complex classes like Validator often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Validator, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 6 | class Validator implements ValidatorInterface |
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| 7 | { |
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| 8 | |||
| 9 | const RULE_REQUIRED = 'required'; |
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| 10 | |||
| 11 | const RULE_REQUIRED_WITH = 'requiredwith'; |
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| 12 | |||
| 13 | const RULE_REQUIRED_WITHOUT = 'requiredwithout'; |
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| 14 | |||
| 15 | const RULE_REQUIRED_WHEN = 'requiredwhen'; |
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| 16 | |||
| 17 | // string rules |
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| 18 | const RULE_ALPHA = 'alpha'; |
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| 19 | |||
| 20 | const RULE_ALPHANUMERIC = 'alphanumeric'; |
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| 21 | |||
| 22 | const RULE_ALPHANUMHYPHEN = 'alphanumhyphen'; |
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| 23 | |||
| 24 | const RULE_LENGTH = 'length'; |
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| 25 | |||
| 26 | const RULE_MAX_LENGTH = 'maxlength'; |
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| 27 | |||
| 28 | const RULE_MIN_LENGTH = 'minlength'; |
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| 29 | |||
| 30 | const RULE_FULLNAME = 'fullname'; |
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| 31 | |||
| 32 | // array rules |
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| 33 | const RULE_ARRAY_LENGTH = 'arraylength'; |
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| 34 | |||
| 35 | const RULE_ARRAY_MIN_LENGTH = 'arrayminlength'; |
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| 36 | |||
| 37 | const RULE_ARRAY_MAX_LENGTH = 'arraymaxlength'; |
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| 38 | |||
| 39 | const RULE_IN_LIST = 'inlist'; |
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| 40 | |||
| 41 | const RULE_NOT_IN_LIST = 'notinlist'; |
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| 42 | |||
| 43 | // date rules |
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| 44 | const RULE_DATE = 'date'; |
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| 45 | |||
| 46 | const RULE_DATETIME = 'datetime'; |
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| 47 | |||
| 48 | const RULE_TIME = 'time'; |
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| 49 | |||
| 50 | // number rules |
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| 51 | const RULE_BETWEEN = 'between'; |
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| 52 | |||
| 53 | const RULE_GREATER_THAN = 'greaterthan'; |
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| 54 | |||
| 55 | const RULE_LESS_THAN = 'lessthan'; |
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| 56 | |||
| 57 | const RULE_NUMBER = 'number'; |
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| 58 | |||
| 59 | const RULE_INTEGER = 'integer'; |
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| 60 | // regular expression rules |
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| 61 | const RULE_REGEX = 'regex'; |
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| 62 | |||
| 63 | const RULE_NOT_REGEX = 'notregex'; |
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| 64 | // other rules |
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| 65 | const RULE_EMAIL = 'email'; |
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| 66 | |||
| 67 | const RULE_EMAIL_DOMAIN = 'emaildomain'; |
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| 68 | |||
| 69 | const RULE_URL = 'url'; |
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| 70 | |||
| 71 | const RULE_WEBSITE = 'website'; |
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| 72 | |||
| 73 | const RULE_IP = 'ipaddress'; |
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| 74 | |||
| 75 | const RULE_MATCH = 'match'; |
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| 76 | |||
| 77 | const RULE_EQUAL = 'equal'; |
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| 78 | |||
| 79 | const RULE_CALLBACK = 'callback'; |
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| 80 | |||
| 81 | // files rules |
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| 82 | const RULE_FILE_EXTENSION = 'fileextension'; |
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| 83 | const RULE_FILE_SIZE = 'filesize'; |
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| 84 | const RULE_IMAGE = 'image'; |
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| 85 | const RULE_IMAGE_HEIGHT = 'imageheight'; |
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| 86 | const RULE_IMAGE_WIDTH = 'imagewidth'; |
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| 87 | const RULE_IMAGE_RATIO = 'imageratio'; |
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| 88 | // upload rules |
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| 89 | const RULE_UPLOAD_EXTENSION = 'uploadextension'; |
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| 90 | const RULE_UPLOAD_SIZE = 'uploadsize'; |
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| 91 | const RULE_UPLOAD_IMAGE = 'uploadimage'; |
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| 92 | const RULE_UPLOAD_IMAGE_HEIGHT = 'uploadimageheight'; |
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| 93 | const RULE_UPLOAD_IMAGE_WIDTH = 'uploadimagewidth'; |
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| 94 | const RULE_UPLOAD_IMAGE_RATIO = 'uploadimageratio'; |
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| 95 | |||
| 96 | /** |
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| 97 | * @var boolean |
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| 98 | */ |
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| 99 | protected $wasValidated = false; |
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| 100 | |||
| 101 | /** |
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| 102 | * @var array |
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| 103 | */ |
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| 104 | protected $rules = array(); |
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| 105 | |||
| 106 | /** |
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| 107 | * @var array |
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| 108 | */ |
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| 109 | protected $messages = array(); |
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| 110 | |||
| 111 | /** |
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| 112 | * @var \Sirius\Validation\RuleFactory |
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| 113 | */ |
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| 114 | protected $ruleFactory; |
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| 115 | |||
| 116 | /** |
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| 117 | * @var ErrorMessage |
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| 118 | */ |
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| 119 | protected $errorMessagePrototype; |
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| 120 | |||
| 121 | /** |
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| 122 | * The object that will contain the data |
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| 123 | * |
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| 124 | * @var \Sirius\Validation\DataWrapper\WrapperInterface |
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| 125 | */ |
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| 126 | protected $dataWrapper; |
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| 127 | |||
| 128 | 19 | public function __construct(RuleFactory $ruleFactory = null, ErrorMessage $errorMessagePrototype = null) |
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| 129 | { |
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| 130 | 19 | if ( ! $ruleFactory) { |
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| 131 | 2 | $ruleFactory = new RuleFactory(); |
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| 132 | 2 | } |
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| 133 | 19 | $this->ruleFactory = $ruleFactory; |
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| 134 | 19 | if ( ! $errorMessagePrototype) { |
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| 135 | 2 | $errorMessagePrototype = new ErrorMessage(); |
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| 136 | 2 | } |
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| 137 | 19 | $this->errorMessagePrototype = $errorMessagePrototype; |
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| 138 | 19 | } |
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| 139 | |||
| 140 | /** |
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| 141 | * Retrieve the rule factory |
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| 142 | * |
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| 143 | * @return \Sirius\Validation\RuleFactory |
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| 144 | */ |
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| 145 | 16 | public function getRuleFactory() |
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| 149 | |||
| 150 | /** |
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| 151 | * @param ErrorMessage $errorMessagePrototype |
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| 152 | * |
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| 153 | * @throws \InvalidArgumentException |
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| 154 | * |
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| 155 | * @return \Sirius\Validation\Rule\AbstractValidator |
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| 156 | */ |
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| 157 | 1 | public function setErrorMessagePrototype(ErrorMessage $errorMessagePrototype) |
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| 158 | { |
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| 159 | 1 | $this->errorMessagePrototype = $errorMessagePrototype; |
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| 160 | |||
| 161 | 1 | return $this; |
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| 162 | } |
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| 163 | |||
| 164 | /** |
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| 165 | * Retrieve the error message prototype |
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| 166 | * |
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| 167 | * @return ErrorMessage |
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| 168 | */ |
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| 169 | 16 | public function getErroMessagePrototype() |
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| 173 | |||
| 174 | /** |
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| 175 | * @example // add multiple rules at once |
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| 176 | * $validator->add(array( |
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| 177 | * 'field_a' => 'required', |
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| 178 | * 'field_b' => array('required', array('email', null, '{label} must be an email', 'Field B')), |
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| 179 | * )); |
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| 180 | * // add multiple rules using arrays |
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| 181 | * $validator->add('field', array('required', 'email')); |
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| 182 | * // add multiple rules using a string |
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| 183 | * $validator->add('field', 'required | email'); |
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| 184 | * // add validator with options |
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| 185 | * $validator->add('field:Label', 'minlength', array('min' => 2), '{label} should have at least {min} characters'); |
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| 186 | * // add validator with string and parameters as JSON string |
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| 187 | * $validator->add('field:Label', 'minlength({"min": 2})({label} should have at least {min} characters)'); |
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| 188 | * // add validator with string and parameters as query string |
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| 189 | * $validator->add('field:label', 'minlength(min=2)({label} should have at least {min} characters)'); |
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| 190 | * |
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| 191 | * @param string $selector |
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| 192 | * @param string|callback $name |
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| 193 | * @param string|array $options |
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| 194 | * @param string $messageTemplate |
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| 195 | * @param string $label |
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| 196 | * |
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| 197 | * @throws \InvalidArgumentException |
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| 198 | * |
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| 199 | * @return Validator |
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| 200 | */ |
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| 201 | 17 | public function add($selector, $name = null, $options = null, $messageTemplate = null, $label = null) |
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| 202 | { |
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| 203 | // the $selector is an associative array with $selector => $rules |
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| 204 | 17 | if (func_num_args() == 1) { |
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| 205 | 3 | if ( ! is_array($selector)) { |
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| 206 | 1 | throw new \InvalidArgumentException('If $selector is the only argument it must be an array'); |
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| 207 | } |
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| 208 | |||
| 209 | 2 | return $this->addMultiple($selector); |
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| 210 | } |
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| 211 | |||
| 212 | // check if the selector is in the form of 'selector:Label' |
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| 213 | 16 | if (strpos($selector, ':') !== false) { |
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| 214 | 1 | list($selector, $label) = explode(':', $selector, 2); |
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| 215 | 1 | } |
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| 216 | |||
| 217 | 16 | $this->ensureSelectorRulesExist($selector, $label); |
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| 218 | 16 | call_user_func(array( $this->rules[$selector], 'add' ), $name, $options, $messageTemplate, $label); |
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| 219 | |||
| 220 | 14 | return $this; |
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| 221 | } |
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| 222 | |||
| 223 | /** |
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| 224 | * @param array $selectorRulesCollection |
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| 225 | * |
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| 226 | * @return Validator |
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| 227 | */ |
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| 228 | 2 | public function addMultiple($selectorRulesCollection) |
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| 229 | { |
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| 230 | 2 | foreach ($selectorRulesCollection as $selector => $rules) { |
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| 231 | |||
| 232 | // a single rule was passed for the $valueSelector |
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| 233 | 2 | if ( ! is_array($rules)) { |
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| 234 | 1 | return $this->add($selector, $rules); |
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| 235 | } |
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| 236 | |||
| 237 | // multiple rules were passed for the same $valueSelector |
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| 238 | 2 | foreach ($rules as $rule) { |
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| 239 | // the rule is an array, this means it contains $name, $options, $messageTemplate, $label |
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| 240 | 2 | if (is_array($rule)) { |
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| 241 | 1 | array_unshift($rule, $selector); |
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| 242 | 1 | call_user_func_array( |
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| 243 | array( |
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| 244 | 1 | $this, |
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| 245 | 'add' |
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| 246 | 1 | ), |
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| 247 | $rule |
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| 248 | 1 | ); |
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| 249 | // the rule is only the name of the validator |
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| 250 | 1 | } else { |
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| 251 | 2 | $this->add($selector, $rule); |
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| 252 | } |
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| 253 | 2 | } |
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| 254 | 2 | } |
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| 255 | |||
| 256 | 1 | return $this; |
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| 257 | } |
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| 258 | |||
| 259 | /** |
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| 260 | * @param string $selector |
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| 261 | * data selector |
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| 262 | * @param mixed $name |
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| 263 | * rule name or true if all rules should be deleted for that selector |
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| 264 | * @param mixed $options |
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| 265 | * rule options, necessary for rules that depend on params for their ID |
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| 266 | * |
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| 267 | * @return self |
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| 268 | */ |
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| 269 | 2 | public function remove($selector, $name = true, $options = null) |
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| 270 | { |
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| 271 | 2 | if ( ! array_key_exists($selector, $this->rules)) { |
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| 272 | 1 | return $this; |
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| 273 | } |
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| 274 | /* @var $collection \Sirius\Validation\ValueValidator */ |
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| 275 | 2 | $collection = $this->rules[$selector]; |
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| 276 | 2 | $collection->remove($name, $options); |
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| 277 | |||
| 278 | 2 | return $this; |
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| 279 | } |
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| 280 | |||
| 281 | /** |
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| 282 | * The data wrapper will be used to wrap around the data passed to the validator |
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| 283 | * This way you can validate anything, not just arrays (which is the default) |
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| 284 | * |
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| 285 | * @param mixed $data |
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| 286 | * |
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| 287 | * @return \Sirius\Validation\DataWrapper\WrapperInterface |
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| 288 | */ |
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| 289 | 15 | public function getDataWrapper($data = null) |
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| 290 | { |
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| 291 | // if $data is set reconstruct the data wrapper |
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| 292 | 15 | if ( ! $this->dataWrapper || $data) { |
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| 293 | 15 | $this->dataWrapper = new DataWrapper\ArrayWrapper($data); |
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| 294 | 14 | } |
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| 295 | |||
| 296 | 14 | return $this->dataWrapper; |
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| 297 | } |
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| 298 | |||
| 299 | 15 | public function setData($data) |
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| 300 | { |
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| 301 | 15 | $this->getDataWrapper($data); |
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| 302 | 14 | $this->wasValidated = false; |
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| 303 | // reset messages |
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| 304 | 14 | $this->messages = array(); |
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| 305 | |||
| 306 | 14 | return $this; |
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| 307 | } |
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| 308 | |||
| 309 | /** |
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| 310 | * Performs the validation |
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| 311 | * |
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| 312 | * @param mixed $data |
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| 313 | * array to be validated |
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| 314 | * |
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| 315 | * @return boolean |
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| 316 | */ |
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| 317 | 15 | public function validate($data = null) |
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| 318 | { |
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| 319 | 15 | if ($data !== null) { |
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| 320 | 14 | $this->setData($data); |
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| 321 | 13 | } |
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| 322 | // data was already validated, return the results immediately |
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| 323 | 14 | if ($this->wasValidated === true) { |
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| 324 | 1 | return $this->wasValidated && count($this->messages) === 0; |
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| 325 | } |
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| 326 | 14 | foreach ($this->rules as $selector => $valueValidator) { |
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| 327 | 14 | foreach ($this->getDataWrapper()->getItemsBySelector($selector) as $valueIdentifier => $value) { |
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| 328 | /* @var $valueValidator \Sirius\Validation\ValueValidator */ |
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| 329 | 14 | if ( ! $valueValidator->validate($value, $valueIdentifier, $this->getDataWrapper())) { |
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| 330 | 14 | foreach ($valueValidator->getMessages() as $message) { |
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| 331 | 14 | $this->addMessage($valueIdentifier, $message); |
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| 332 | 14 | } |
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| 333 | 14 | } |
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| 334 | 14 | } |
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| 335 | 14 | } |
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| 336 | 14 | $this->wasValidated = true; |
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| 337 | |||
| 338 | 14 | return $this->wasValidated && count($this->messages) === 0; |
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| 339 | } |
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| 340 | |||
| 341 | /** |
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| 342 | * @param string $item |
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| 343 | * data identifier (eg: 'email', 'addresses[0][state]') |
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| 344 | * @param string $message |
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| 345 | * |
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| 346 | * @return self |
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| 347 | */ |
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| 348 | 15 | public function addMessage($item, $message = null) |
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| 349 | { |
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| 350 | 15 | if ($message === null || $message === '') { |
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| 351 | 1 | return $this; |
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| 352 | } |
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| 353 | 15 | if ( ! array_key_exists($item, $this->messages)) { |
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| 354 | 15 | $this->messages[$item] = array(); |
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| 355 | 15 | } |
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| 356 | 15 | $this->messages[$item][] = $message; |
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| 357 | |||
| 358 | 15 | return $this; |
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| 359 | } |
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| 360 | |||
| 361 | /** |
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| 362 | * Clears the messages of an item |
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| 363 | * |
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| 364 | * @param string $item |
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| 365 | * |
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| 366 | * @return self |
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| 367 | */ |
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| 368 | 1 | public function clearMessages($item = null) |
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| 369 | { |
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| 370 | 1 | if (is_string($item)) { |
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| 371 | 1 | if (array_key_exists($item, $this->messages)) { |
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| 372 | 1 | unset($this->messages[$item]); |
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| 373 | 1 | } |
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| 374 | 1 | } elseif ($item === null) { |
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| 375 | 1 | $this->messages = array(); |
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| 376 | 1 | } |
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| 377 | |||
| 378 | 1 | return $this; |
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| 379 | } |
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| 380 | |||
| 381 | /** |
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| 382 | * @param string $item |
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| 383 | * key of the messages array (eg: 'password', 'addresses[0][line_1]') |
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| 384 | * |
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| 385 | * @return array |
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| 386 | */ |
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| 387 | 13 | public function getMessages($item = null) |
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| 388 | { |
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| 389 | 13 | if (is_string($item)) { |
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| 390 | 7 | return array_key_exists($item, $this->messages) ? $this->messages[$item] : array(); |
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| 391 | } |
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| 392 | |||
| 393 | 6 | return $this->messages; |
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| 394 | } |
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| 395 | |||
| 396 | 1 | public function getRules() |
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| 400 | |||
| 401 | /** |
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| 402 | * @param string $selector |
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| 403 | * @param string $label |
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| 404 | */ |
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| 405 | 16 | protected function ensureSelectorRulesExist($selector, $label = null) |
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| 406 | { |
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| 407 | 16 | if ( ! isset($this->rules[$selector])) { |
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| 408 | 16 | $this->rules[$selector] = new ValueValidator($this->getRuleFactory(), $this->getErroMessagePrototype(), |
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| 409 | 16 | $label); |
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| 410 | 16 | } |
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| 411 | 16 | } |
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| 412 | |||
| 413 | } |
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| 414 |