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| 1 | <?php |
| 2 | declare(strict_types=1); |
| 3 | /** |
| 4 | * Pop PHP Framework (https://www.popphp.org/) |
| 5 | * |
| 6 | * @link https://github.com/popphp/popphp-framework |
| 7 | * @author Nick Sagona, III <nick@popphp.org> |
| 8 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 9 | * @license https://www.popphp.org/license New BSD License |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * @namespace |
| 14 | */ |
| 15 | namespace Pop\Form; |
| 16 | |
| 17 | /** |
| 18 | * Form validator class |
| 19 | * |
| 20 | * @category Pop |
| 21 | * @package Pop\Form |
| 22 | * @author Nick Sagona, III <nick@popphp.org> |
| 23 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 24 | * @license https://www.popphp.org/license New BSD License |
| 25 | * @version 5.0.0 |
| 26 | */ |
| 27 | |
| 28 | class FormValidator implements FormInterface, \ArrayAccess, \Countable, \IteratorAggregate |
| 29 | { |
| 30 | |
| 31 | /** |
| 32 | * Trait declaration |
| 33 | */ |
| 34 | use FormTrait; |
| 35 | use ValidatorEvaluationTrait; |
| 36 | |
| 37 | /** |
| 38 | * Form validators |
| 39 | * @var array |
| 40 | */ |
| 41 | protected array $validators = []; |
| 42 | |
| 43 | /** |
| 44 | * Required fields |
| 45 | * @var array |
| 46 | */ |
| 47 | protected array $required = []; |
| 48 | |
| 49 | /** |
| 50 | * Form values |
| 51 | * @var array |
| 52 | */ |
| 53 | protected array $values = []; |
| 54 | |
| 55 | /** |
| 56 | * Form validation errors |
| 57 | * @var array |
| 58 | */ |
| 59 | protected array $errors = []; |
| 60 | |
| 61 | /** |
| 62 | * Constructor |
| 63 | * |
| 64 | * Instantiate the form validator object |
| 65 | * |
| 66 | * @param ?array $validators |
| 67 | * @param mixed $required |
| 68 | * @param ?array $values |
| 69 | * @param mixed $filters |
| 70 | */ |
| 71 | public function __construct(?array $validators = null, mixed $required = null, ?array $values = null, mixed $filters = null) |
| 72 | { |
| 73 | if (!empty($validators)) { |
| 74 | $this->addValidators($validators); |
| 75 | } |
| 76 | if ($required !== null) { |
| 77 | $this->setRequired($required); |
| 78 | } |
| 79 | if ($values !== null) { |
| 80 | $this->setValues($values); |
| 81 | } |
| 82 | if ($filters !== null) { |
| 83 | if (is_array($filters)) { |
| 84 | $this->addFilters($filters); |
| 85 | } else { |
| 86 | $this->addFilter($filters); |
| 87 | } |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Create form validator from config |
| 93 | * |
| 94 | * @param array|FormConfig $formConfig |
| 95 | * @param mixed $required |
| 96 | * @param ?array $values |
| 97 | * @param mixed $filters |
| 98 | * @return FormValidator |
| 99 | */ |
| 100 | public static function createFromConfig( |
| 101 | array|FormConfig $formConfig, mixed $required = null, ?array $values = null, mixed $filters = null |
| 102 | ): FormValidator |
| 103 | { |
| 104 | $validators = []; |
| 105 | $required = []; |
| 106 | |
| 107 | foreach ($formConfig as $key => $value) { |
| 108 | if (!empty($value['validator'])) { |
| 109 | $validators[$key] = $value['validator']; |
| 110 | } else if (!empty($value['validators'])) { |
| 111 | $validators[$key] = $value['validators']; |
| 112 | } |
| 113 | if (isset($value['required']) && ($value['required'] == true)) { |
| 114 | $required[] = $key; |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | return new self($validators, $required, $values, $filters); |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Add validators |
| 123 | * |
| 124 | * @param array $validators |
| 125 | * @return FormValidator |
| 126 | */ |
| 127 | public function addValidators(array $validators): FormValidator |
| 128 | { |
| 129 | foreach ($validators as $field => $validator) { |
| 130 | $this->addValidator($field, $validator); |
| 131 | } |
| 132 | return $this; |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * Add validator |
| 137 | * |
| 138 | * @param string $field |
| 139 | * @param mixed $validator |
| 140 | * @return FormValidator |
| 141 | */ |
| 142 | public function addValidator(string $field, mixed $validator): FormValidator |
| 143 | { |
| 144 | if (!isset($this->validators[$field])) { |
| 145 | $this->validators[$field] = []; |
| 146 | } |
| 147 | |
| 148 | if (!is_array($validator)) { |
| 149 | $validator = [$validator]; |
| 150 | } |
| 151 | |
| 152 | foreach ($validator as $valid) { |
| 153 | if (!in_array($valid, $this->validators[$field], true)) { |
| 154 | $this->validators[$field][] = $valid; |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | return $this; |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * Has validators |
| 163 | * |
| 164 | * @param ?string $field |
| 165 | * @return bool |
| 166 | */ |
| 167 | public function hasValidators(?string $field = null) |
| 168 | { |
| 169 | if ($field === null) { |
| 170 | return (count($this->validators) > 0); |
| 171 | } else if (isset($this->validators[$field])) { |
| 172 | return (count($this->validators[$field]) > 0); |
| 173 | } else { |
| 174 | return false; |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | /** |
| 179 | * Get validators |
| 180 | * |
| 181 | * @param string $field |
| 182 | * @return mixed |
| 183 | */ |
| 184 | public function getValidators(?string $field = null) |
| 185 | { |
| 186 | if ($field === null) { |
| 187 | return $this->validators; |
| 188 | } else if (isset($this->validators[$field])) { |
| 189 | return $this->validators[$field]; |
| 190 | } else { |
| 191 | return null; |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | /** |
| 196 | * Has validator |
| 197 | * |
| 198 | * @param string $field |
| 199 | * @param int $index |
| 200 | * @return bool |
| 201 | */ |
| 202 | public function hasValidator(string $field, int $index): bool |
| 203 | { |
| 204 | return (isset($this->validators[$field]) && isset($this->validators[$field][$index])); |
| 205 | } |
| 206 | |
| 207 | /** |
| 208 | * Get validator |
| 209 | * |
| 210 | * @param string $field |
| 211 | * @param int $index |
| 212 | * @return mixed |
| 213 | */ |
| 214 | public function getValidator(string $field, int $index) |
| 215 | { |
| 216 | return (isset($this->validators[$field]) && isset($this->validators[$field][$index])) ? |
| 217 | $this->validators[$field][$index] : null; |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * Remove validators |
| 222 | * |
| 223 | * @param ?string $field |
| 224 | * @return FormValidator |
| 225 | */ |
| 226 | public function removeValidators(?string $field = null): FormValidator |
| 227 | { |
| 228 | if (($field !== null) && isset($this->validators[$field])) { |
| 229 | unset($this->validators[$field]); |
| 230 | } else if ($field === null) { |
| 231 | $this->validators = []; |
| 232 | } |
| 233 | return $this; |
| 234 | } |
| 235 | |
| 236 | /** |
| 237 | * Remove validator |
| 238 | * |
| 239 | * @param string $field |
| 240 | * @param int $index |
| 241 | * @return FormValidator |
| 242 | */ |
| 243 | public function removeValidator(string $field, int $index): FormValidator |
| 244 | { |
| 245 | if (isset($this->validators[$field]) && isset($this->validators[$field][$index])) { |
| 246 | unset($this->validators[$field][$index]); |
| 247 | } |
| 248 | return $this; |
| 249 | } |
| 250 | |
| 251 | /** |
| 252 | * Set required |
| 253 | * |
| 254 | * @param mixed $required |
| 255 | * @param ?string $requiredMessage |
| 256 | * @return FormValidator |
| 257 | */ |
| 258 | public function setRequired(mixed $required, ?string $requiredMessage = 'This field is required.'): FormValidator |
| 259 | { |
| 260 | if (!is_array($required)) { |
| 261 | $required = [$required]; |
| 262 | } |
| 263 | |
| 264 | foreach ($required as $req) { |
| 265 | if (!in_array($req, $this->required)) { |
| 266 | $this->required[$req] = $requiredMessage; |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | return $this; |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * Is required |
| 275 | * |
| 276 | * @param string $field |
| 277 | * @return bool |
| 278 | */ |
| 279 | public function isRequired(string $field): bool |
| 280 | { |
| 281 | return array_key_exists($field, $this->required); |
| 282 | } |
| 283 | |
| 284 | /** |
| 285 | * Remove required |
| 286 | * |
| 287 | * @param string $field |
| 288 | * @return FormValidator |
| 289 | */ |
| 290 | public function removeRequired(string $field): FormValidator |
| 291 | { |
| 292 | if (array_key_exists($field, $this->required)) { |
| 293 | unset($this->required[$field]); |
| 294 | } |
| 295 | |
| 296 | return $this; |
| 297 | } |
| 298 | |
| 299 | /** |
| 300 | * Set values |
| 301 | * |
| 302 | * @param array $values |
| 303 | * @return FormValidator |
| 304 | */ |
| 305 | public function setValues(array $values): FormValidator |
| 306 | { |
| 307 | $this->values = $values; |
| 308 | return $this; |
| 309 | } |
| 310 | |
| 311 | /** |
| 312 | * Get values |
| 313 | * |
| 314 | * @return array |
| 315 | */ |
| 316 | public function getValues(): array |
| 317 | { |
| 318 | return $this->values; |
| 319 | } |
| 320 | |
| 321 | /** |
| 322 | * Filter value with the filters |
| 323 | * |
| 324 | * @param mixed $field |
| 325 | * @throws Exception |
| 326 | * @return mixed |
| 327 | */ |
| 328 | public function filterValue(mixed $field): mixed |
| 329 | { |
| 330 | if (!isset($this->values[$field])) { |
| 331 | throw new Exception("Error: A value for '" . $field . "' has not been set."); |
| 332 | } |
| 333 | |
| 334 | $value = $this->values[$field]; |
| 335 | |
| 336 | foreach ($this->filters as $filter) { |
| 337 | $value = $filter->filter($value, $field); |
| 338 | } |
| 339 | |
| 340 | $this->values[$field] = $value; |
| 341 | |
| 342 | return $value; |
| 343 | } |
| 344 | |
| 345 | /** |
| 346 | * Filter values with the filters |
| 347 | * |
| 348 | * @param mixed $values |
| 349 | * @return mixed |
| 350 | */ |
| 351 | public function filter(mixed $values = null): mixed |
| 352 | { |
| 353 | if ($values !== null) { |
| 354 | $this->values = $values; |
| 355 | } |
| 356 | |
| 357 | foreach ($this->values as $name => $value) { |
| 358 | $this->values[$name] = $this->filterValue($name); |
| 359 | } |
| 360 | |
| 361 | return $this->values; |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * Validate values |
| 366 | * |
| 367 | * @param mixed $fields |
| 368 | * @return bool |
| 369 | */ |
| 370 | public function validate(mixed $fields = null): bool |
| 371 | { |
| 372 | $this->filter(); |
| 373 | |
| 374 | if ($fields !== null) { |
| 375 | $fields = (!is_array($fields)) ? [$fields] : $fields; |
| 376 | $formFields = array_filter( |
| 377 | $this->values, |
| 378 | function ($key) use ($fields) { |
| 379 | return in_array($key, $fields); |
| 380 | }, |
| 381 | ARRAY_FILTER_USE_KEY |
| 382 | ); |
| 383 | |
| 384 | foreach ($this->required as $field => $requiredMessage) { |
| 385 | if (in_array($field, $fields) && !isset($formFields[$field])) { |
| 386 | $this->addError($field, $requiredMessage); |
| 387 | } |
| 388 | } |
| 389 | } else { |
| 390 | $formFields = $this->values; |
| 391 | // Check for required fields |
| 392 | foreach ($this->required as $field => $requiredMessage) { |
| 393 | if (!isset($formFields[$field])) { |
| 394 | $this->addError($field, $requiredMessage); |
| 395 | } |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | // Check for required fields and execute any field validators |
| 400 | foreach ($formFields as $field => $value) { |
| 401 | if ($this->hasValidators($field)) { |
| 402 | foreach ($this->validators[$field] as $validator) { |
| 403 | foreach ($this->evaluateValidator($validator, $value, $formFields) as $message) { |
| 404 | $this->addError($field, $message); |
| 405 | } |
| 406 | } |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | return !$this->hasErrors(); |
| 411 | } |
| 412 | |
| 413 | /** |
| 414 | * Has errors |
| 415 | * |
| 416 | * @param ?string $field |
| 417 | * @return bool |
| 418 | */ |
| 419 | public function hasErrors(?string $field = null): bool |
| 420 | { |
| 421 | if ($field !== null) { |
| 422 | return (isset($this->errors[$field]) && (count($this->errors[$field]) > 0)); |
| 423 | } else { |
| 424 | return (count($this->errors) > 0); |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | /** |
| 429 | * Get errors |
| 430 | * |
| 431 | * @param ?string $field |
| 432 | * @return array |
| 433 | */ |
| 434 | public function getErrors(?string $field = null): array |
| 435 | { |
| 436 | if (($field !== null) && isset($this->errors[$field])) { |
| 437 | return $this->errors[$field]; |
| 438 | } else { |
| 439 | return $this->errors; |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | /** |
| 444 | * Get error |
| 445 | * |
| 446 | * @param string $field |
| 447 | * @param int $index |
| 448 | * @return mixed |
| 449 | */ |
| 450 | public function getError(string $field, int $index): mixed |
| 451 | { |
| 452 | return (isset($this->errors[$field]) && isset($this->errors[$field][$index])) ? |
| 453 | $this->errors[$field][$index] : null; |
| 454 | } |
| 455 | |
| 456 | /** |
| 457 | * Add error |
| 458 | * |
| 459 | * @param string $field |
| 460 | * @param string $error |
| 461 | * @return FormValidator |
| 462 | */ |
| 463 | protected function addError(string $field, string $error): FormValidator |
| 464 | { |
| 465 | if (!isset($this->errors[$field])) { |
| 466 | $this->errors[$field] = []; |
| 467 | } |
| 468 | |
| 469 | if (!in_array($error, $this->errors[$field])) { |
| 470 | $this->errors[$field][] = $error; |
| 471 | } |
| 472 | |
| 473 | return $this; |
| 474 | } |
| 475 | |
| 476 | /** |
| 477 | * Count of values |
| 478 | * |
| 479 | * @return int |
| 480 | */ |
| 481 | public function count(): int |
| 482 | { |
| 483 | return count($this->values); |
| 484 | } |
| 485 | |
| 486 | /** |
| 487 | * Get values |
| 488 | * |
| 489 | * @param array $options |
| 490 | * @return array |
| 491 | */ |
| 492 | public function toArray(array $options = []): array |
| 493 | { |
| 494 | $fieldValues = $this->values; |
| 495 | |
| 496 | if (!empty($options)) { |
| 497 | if (isset($options['exclude'])) { |
| 498 | if (!is_array($options['exclude'])) { |
| 499 | $options['exclude'] = [$options['exclude']]; |
| 500 | } |
| 501 | $fieldValues = array_diff_key($fieldValues, array_flip($options['exclude'])); |
| 502 | } |
| 503 | if (isset($options['filter'])) { |
| 504 | $fieldValues = array_filter($fieldValues, $options['filter']); |
| 505 | } |
| 506 | } |
| 507 | |
| 508 | return $fieldValues; |
| 509 | } |
| 510 | |
| 511 | /** |
| 512 | * Set method to set the property to the value of values[$name] |
| 513 | * |
| 514 | * @param string $name |
| 515 | * @param mixed $value |
| 516 | * @return void |
| 517 | */ |
| 518 | public function __set(string $name, mixed $value): void |
| 519 | { |
| 520 | $this->values[$name] = $value; |
| 521 | } |
| 522 | |
| 523 | /** |
| 524 | * Get method to return the value of values[$name] |
| 525 | * |
| 526 | * @param string $name |
| 527 | * @return mixed |
| 528 | */ |
| 529 | public function __get(string $name): mixed |
| 530 | { |
| 531 | return $this->values[$name] ?? null; |
| 532 | } |
| 533 | |
| 534 | /** |
| 535 | * Return the isset value of values[$name] |
| 536 | * |
| 537 | * @param string $name |
| 538 | * @return bool |
| 539 | */ |
| 540 | public function __isset(string $name): bool |
| 541 | { |
| 542 | return isset($this->values[$name]); |
| 543 | } |
| 544 | |
| 545 | /** |
| 546 | * Unset values[$name] |
| 547 | * |
| 548 | * @param string $name |
| 549 | * @return void |
| 550 | */ |
| 551 | public function __unset(string $name): void |
| 552 | { |
| 553 | if (isset($this->values[$name])) { |
| 554 | unset($this->values[$name]); |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | } |