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| 1 | <?php |
| 2 | /** |
| 3 | * Pop PHP Framework (http://www.popphp.org/) |
| 4 | * |
| 5 | * @link https://github.com/popphp/popphp-framework |
| 6 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 7 | * @copyright Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 8 | * @license http://www.popphp.org/license New BSD License |
| 9 | */ |
| 10 | |
| 11 | /** |
| 12 | * @namespace |
| 13 | */ |
| 14 | namespace Pop\Form; |
| 15 | |
| 16 | /** |
| 17 | * Form validator class |
| 18 | * |
| 19 | * @category Pop |
| 20 | * @package Pop\Form |
| 21 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 22 | * @copyright Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 23 | * @license http://www.popphp.org/license New BSD License |
| 24 | * @version 4.0.0 |
| 25 | */ |
| 26 | |
| 27 | class FormValidator implements FormInterface, \ArrayAccess, \Countable, \IteratorAggregate |
| 28 | { |
| 29 | |
| 30 | /** |
| 31 | * Trait declaration |
| 32 | */ |
| 33 | use FormTrait; |
| 34 | |
| 35 | /** |
| 36 | * Form validators |
| 37 | * @var array |
| 38 | */ |
| 39 | protected array $validators = []; |
| 40 | |
| 41 | /** |
| 42 | * Required fields |
| 43 | * @var array |
| 44 | */ |
| 45 | protected array $required = []; |
| 46 | |
| 47 | /** |
| 48 | * Form values |
| 49 | * @var array |
| 50 | */ |
| 51 | protected array $values = []; |
| 52 | |
| 53 | /** |
| 54 | * Form validation errors |
| 55 | * @var array |
| 56 | */ |
| 57 | protected array $errors = []; |
| 58 | |
| 59 | /** |
| 60 | * Constructor |
| 61 | * |
| 62 | * Instantiate the form validator object |
| 63 | * |
| 64 | * @param ?array $validators |
| 65 | * @param mixed $required |
| 66 | * @param ?array $values |
| 67 | * @param mixed $filters |
| 68 | */ |
| 69 | public function __construct(array $validators = null, mixed $required = null, ?array $values = null, mixed $filters = null) |
| 70 | { |
| 71 | if (!empty($validators)) { |
| 72 | $this->addValidators($validators); |
| 73 | } |
| 74 | if ($required !== null) { |
| 75 | $this->setRequired($required); |
| 76 | } |
| 77 | if ($values !== null) { |
| 78 | $this->setValues($values); |
| 79 | } |
| 80 | if ($filters !== null) { |
| 81 | if (is_array($filters)) { |
| 82 | $this->addFilters($filters); |
| 83 | } else { |
| 84 | $this->addFilter($filters); |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Create form validator from config |
| 91 | * |
| 92 | * @param array|FormConfig $formConfig |
| 93 | * @param mixed $required |
| 94 | * @param ?array $values |
| 95 | * @param mixed $filters |
| 96 | * @return FormValidator |
| 97 | */ |
| 98 | public static function createFromConfig( |
| 99 | array|FormConfig $formConfig, mixed $required = null, ?array $values = null, mixed $filters = null |
| 100 | ): FormValidator |
| 101 | { |
| 102 | $validators = []; |
| 103 | $required = []; |
| 104 | |
| 105 | foreach ($formConfig as $key => $value) { |
| 106 | if (!empty($value['validator'])) { |
| 107 | $validators[$key] = $value['validator']; |
| 108 | } else if (!empty($value['validators'])) { |
| 109 | $validators[$key] = $value['validators']; |
| 110 | } |
| 111 | if (isset($value['required']) && ($value['required'] == true)) { |
| 112 | $required[] = $key; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | return new self($validators, $required, $values, $filters); |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Add validators |
| 121 | * |
| 122 | * @param array $validators |
| 123 | * @return FormValidator |
| 124 | */ |
| 125 | public function addValidators(array $validators): FormValidator |
| 126 | { |
| 127 | foreach ($validators as $field => $validator) { |
| 128 | $this->addValidator($field, $validator); |
| 129 | } |
| 130 | return $this; |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * Add validator |
| 135 | * |
| 136 | * @param string $field |
| 137 | * @param mixed $validator |
| 138 | * @return FormValidator |
| 139 | */ |
| 140 | public function addValidator(string $field, mixed $validator): FormValidator |
| 141 | { |
| 142 | if (!isset($this->validators[$field])) { |
| 143 | $this->validators[$field] = []; |
| 144 | } |
| 145 | |
| 146 | if (!is_array($validator)) { |
| 147 | $validator = [$validator]; |
| 148 | } |
| 149 | |
| 150 | foreach ($validator as $valid) { |
| 151 | if (!in_array($valid, $this->validators[$field], true)) { |
| 152 | $this->validators[$field][] = $valid; |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | return $this; |
| 157 | } |
| 158 | |
| 159 | /** |
| 160 | * Has validators |
| 161 | * |
| 162 | * @param ?string $field |
| 163 | * @return bool |
| 164 | */ |
| 165 | public function hasValidators(?string $field = null) |
| 166 | { |
| 167 | if ($field === null) { |
| 168 | return (count($this->validators) > 0); |
| 169 | } else if (($field !== null) && isset($this->validators[$field])) { |
| 170 | return (count($this->validators[$field]) > 0); |
| 171 | } else { |
| 172 | return false; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Get validators |
| 178 | * |
| 179 | * @param string $field |
| 180 | * @return mixed |
| 181 | */ |
| 182 | public function getValidators(?string $field = null) |
| 183 | { |
| 184 | if ($field === null) { |
| 185 | return $this->validators; |
| 186 | } else if (($field !== null) && isset($this->validators[$field])) { |
| 187 | return $this->validators[$field]; |
| 188 | } else { |
| 189 | return null; |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Has validator |
| 195 | * |
| 196 | * @param string $field |
| 197 | * @param int $index |
| 198 | * @return bool |
| 199 | */ |
| 200 | public function hasValidator(string $field, int $index): bool |
| 201 | { |
| 202 | return (isset($this->validators[$field]) && isset($this->validators[$field][$index])); |
| 203 | } |
| 204 | |
| 205 | /** |
| 206 | * Get validator |
| 207 | * |
| 208 | * @param string $field |
| 209 | * @param int $index |
| 210 | * @return mixed |
| 211 | */ |
| 212 | public function getValidator(string $field, int $index) |
| 213 | { |
| 214 | return (isset($this->validators[$field]) && isset($this->validators[$field][$index])) ? |
| 215 | $this->validators[$field][$index] : null; |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Remove validators |
| 220 | * |
| 221 | * @param ?string $field |
| 222 | * @return FormValidator |
| 223 | */ |
| 224 | public function removeValidators(?string $field = null): FormValidator |
| 225 | { |
| 226 | if (($field !== null) && isset($this->validators[$field])) { |
| 227 | unset($this->validators[$field]); |
| 228 | } else if ($field === null) { |
| 229 | $this->validators = []; |
| 230 | } |
| 231 | return $this; |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * Remove validator |
| 236 | * |
| 237 | * @param string $field |
| 238 | * @param int $index |
| 239 | * @return FormValidator |
| 240 | */ |
| 241 | public function removeValidator(string $field, int $index): FormValidator |
| 242 | { |
| 243 | if (isset($this->validators[$field]) && isset($this->validators[$field][$index])) { |
| 244 | unset($this->validators[$field][$index]); |
| 245 | } |
| 246 | return $this; |
| 247 | } |
| 248 | |
| 249 | /** |
| 250 | * Set required |
| 251 | * |
| 252 | * @param mixed $required |
| 253 | * @return FormValidator |
| 254 | */ |
| 255 | public function setRequired(mixed $required): FormValidator |
| 256 | { |
| 257 | if (!is_array($required)) { |
| 258 | $required = [$required]; |
| 259 | } |
| 260 | |
| 261 | foreach ($required as $req) { |
| 262 | if (!in_array($req, $this->required)) { |
| 263 | $this->required[] = $req; |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | return $this; |
| 268 | } |
| 269 | |
| 270 | /** |
| 271 | * Is required |
| 272 | * |
| 273 | * @param string $field |
| 274 | * @return bool |
| 275 | */ |
| 276 | public function isRequired(string $field): bool |
| 277 | { |
| 278 | return (in_array($field, $this->required)); |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * Remove required |
| 283 | * |
| 284 | * @param string $field |
| 285 | * @return FormValidator |
| 286 | */ |
| 287 | public function removeRequired(string $field): FormValidator |
| 288 | { |
| 289 | if (in_array($field, $this->required)) { |
| 290 | unset($this->required[array_search($field, $this->required)]); |
| 291 | } |
| 292 | |
| 293 | return $this; |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * Set values |
| 298 | * |
| 299 | * @param array $values |
| 300 | * @return FormValidator |
| 301 | */ |
| 302 | public function setValues(array $values): FormValidator |
| 303 | { |
| 304 | $this->values = $values; |
| 305 | return $this; |
| 306 | } |
| 307 | |
| 308 | /** |
| 309 | * Get values |
| 310 | * |
| 311 | * @return array |
| 312 | */ |
| 313 | public function getValues(): array |
| 314 | { |
| 315 | return $this->values; |
| 316 | } |
| 317 | |
| 318 | /** |
| 319 | * Filter value with the filters |
| 320 | * |
| 321 | * @param mixed $field |
| 322 | * @throws Exception |
| 323 | * @return mixed |
| 324 | */ |
| 325 | public function filterValue(mixed $field): mixed |
| 326 | { |
| 327 | if (!isset($this->values[$field])) { |
| 328 | throw new Exception("Error: A value for '" . $field . "' has not been set."); |
| 329 | } |
| 330 | |
| 331 | $value = $this->values[$field]; |
| 332 | |
| 333 | foreach ($this->filters as $filter) { |
| 334 | $value = $filter->filter($value, $field); |
| 335 | } |
| 336 | |
| 337 | $this->values[$field] = $value; |
| 338 | |
| 339 | return $value; |
| 340 | } |
| 341 | |
| 342 | /** |
| 343 | * Filter values with the filters |
| 344 | * |
| 345 | * @param mixed $values |
| 346 | * @return mixed |
| 347 | */ |
| 348 | public function filter(mixed $values = null): mixed |
| 349 | { |
| 350 | if ($values !== null) { |
| 351 | $this->values = $values; |
| 352 | } |
| 353 | |
| 354 | if (is_array($this->values)) { |
| 355 | foreach ($this->values as $name => $value) { |
| 356 | $this->values[$name] = $this->filterValue($name); |
| 357 | } |
| 358 | } else { |
| 359 | $this->values = $this->filterValue($this->values); |
| 360 | } |
| 361 | |
| 362 | return $this->values; |
| 363 | } |
| 364 | |
| 365 | /** |
| 366 | * Validate values |
| 367 | * |
| 368 | * @param mixed $fields |
| 369 | * @return bool |
| 370 | */ |
| 371 | public function validate(mixed $fields = null): bool |
| 372 | { |
| 373 | $this->filter(); |
| 374 | |
| 375 | if ($fields !== null) { |
| 376 | $fields = (!is_array($fields)) ? [$fields] : $fields; |
| 377 | $formFields = array_filter( |
| 378 | $this->values, |
| 379 | function ($key) use ($fields) { |
| 380 | return in_array($key, $fields); |
| 381 | }, |
| 382 | ARRAY_FILTER_USE_KEY |
| 383 | ); |
| 384 | |
| 385 | foreach ($formFields as $field) { |
| 386 | if (in_array($field, $this->required) && !isset($formFields[$field])) { |
| 387 | $this->addError($field, 'This field is required.'); |
| 388 | } |
| 389 | } |
| 390 | } else { |
| 391 | $formFields = $this->values; |
| 392 | // Check for required fields |
| 393 | foreach ($this->required as $required) { |
| 394 | if (!isset($formFields[$required])) { |
| 395 | $this->addError($required, 'This field is required.'); |
| 396 | } |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | // Check for required fields and execute any field validators |
| 401 | foreach ($formFields as $field => $value) { |
| 402 | if ($this->hasValidators($field)) { |
| 403 | foreach ($this->validators[$field] as $validator) { |
| 404 | if ($validator instanceof \Pop\Validator\ValidatorInterface) { |
| 405 | if (!$validator->evaluate($value)) { |
| 406 | $this->addError($field, $validator->getMessage()); |
| 407 | } |
| 408 | } else if (is_callable($validator)) { |
| 409 | $result = call_user_func_array($validator, [$value, $formFields]); |
| 410 | if ($result instanceof \Pop\Validator\ValidatorInterface) { |
| 411 | if (!$result->evaluate($value)) { |
| 412 | $this->addError($field, $result->getMessage()); |
| 413 | } |
| 414 | } else if (is_array($result)) { |
| 415 | foreach ($result as $val) { |
| 416 | if ($val instanceof \Pop\Validator\ValidatorInterface) { |
| 417 | if (!$val->evaluate($value)) { |
| 418 | $this->addError($field, $val->getMessage()); |
| 419 | } |
| 420 | } |
| 421 | } |
| 422 | } else if ($result !== null) { |
| 423 | $this->addError($field, $result); |
| 424 | } |
| 425 | } |
| 426 | } |
| 427 | } |
| 428 | } |
| 429 | |
| 430 | return !$this->hasErrors(); |
| 431 | } |
| 432 | |
| 433 | /** |
| 434 | * Has errors |
| 435 | * |
| 436 | * @param ?string $field |
| 437 | * @return bool |
| 438 | */ |
| 439 | public function hasErrors(?string $field = null): bool |
| 440 | { |
| 441 | if ($field !== null) { |
| 442 | return (isset($this->errors[$field]) && (count($this->errors[$field]) > 0)); |
| 443 | } else { |
| 444 | return (count($this->errors) > 0); |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | /** |
| 449 | * Get errors |
| 450 | * |
| 451 | * @param ?string $field |
| 452 | * @return array |
| 453 | */ |
| 454 | public function getErrors(?string $field = null): array |
| 455 | { |
| 456 | if (($field !== null) && isset($this->errors[$field])) { |
| 457 | return $this->errors[$field]; |
| 458 | } else { |
| 459 | return $this->errors; |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | /** |
| 464 | * Get error |
| 465 | * |
| 466 | * @param string $field |
| 467 | * @param int $index |
| 468 | * @return mixed |
| 469 | */ |
| 470 | public function getError(string $field, int $index): mixed |
| 471 | { |
| 472 | return (isset($this->errors[$field]) && isset($this->errors[$field][$index])) ? |
| 473 | $this->errors[$field][$index] : null; |
| 474 | } |
| 475 | |
| 476 | /** |
| 477 | * Add error |
| 478 | * |
| 479 | * @param string $field |
| 480 | * @param string $error |
| 481 | * @return FormValidator |
| 482 | */ |
| 483 | protected function addError(string $field, string $error): FormValidator |
| 484 | { |
| 485 | if (!isset($this->errors[$field])) { |
| 486 | $this->errors[$field] = []; |
| 487 | } |
| 488 | |
| 489 | if (!in_array($error, $this->errors[$field])) { |
| 490 | $this->errors[$field][] = $error; |
| 491 | } |
| 492 | |
| 493 | return $this; |
| 494 | } |
| 495 | |
| 496 | /** |
| 497 | * Count of values |
| 498 | * |
| 499 | * @return int |
| 500 | */ |
| 501 | public function count(): int |
| 502 | { |
| 503 | return count($this->values); |
| 504 | } |
| 505 | |
| 506 | /** |
| 507 | * Get values |
| 508 | * |
| 509 | * @return array |
| 510 | */ |
| 511 | public function toArray(): array |
| 512 | { |
| 513 | return $this->values; |
| 514 | } |
| 515 | |
| 516 | /** |
| 517 | * Set method to set the property to the value of values[$name] |
| 518 | * |
| 519 | * @param string $name |
| 520 | * @param mixed $value |
| 521 | * @return void |
| 522 | */ |
| 523 | public function __set(string $name, mixed $value): void |
| 524 | { |
| 525 | $this->values[$name] = $value; |
| 526 | } |
| 527 | |
| 528 | /** |
| 529 | * Get method to return the value of values[$name] |
| 530 | * |
| 531 | * @param string $name |
| 532 | * @return mixed |
| 533 | */ |
| 534 | public function __get(string $name): mixed |
| 535 | { |
| 536 | return $this->values[$name] ?? null; |
| 537 | } |
| 538 | |
| 539 | /** |
| 540 | * Return the isset value of values[$name] |
| 541 | * |
| 542 | * @param string $name |
| 543 | * @return bool |
| 544 | */ |
| 545 | public function __isset(string $name): bool |
| 546 | { |
| 547 | return isset($this->values[$name]); |
| 548 | } |
| 549 | |
| 550 | /** |
| 551 | * Unset values[$name] |
| 552 | * |
| 553 | * @param string $name |
| 554 | * @return void |
| 555 | */ |
| 556 | public function __unset(string $name): void |
| 557 | { |
| 558 | if (isset($this->values[$name])) { |
| 559 | unset($this->values[$name]); |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | } |