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<?php |
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declare(strict_types=1); |
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/** |
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* Saito - The Threaded Web Forum |
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* |
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* @copyright Copyright (c) the Saito Project Developers |
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* @link https://github.com/Schlaefer/Saito |
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* @license http://opensource.org/licenses/MIT |
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*/ |
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namespace App\Controller\Component; |
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use App\Lib\Model\Table\FieldFilter; |
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use App\Model\Entity\Entry; |
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use App\Model\Table\EntriesTable; |
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use Cake\Controller\Component; |
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use Cake\Http\Exception\ForbiddenException; |
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use Cake\ORM\TableRegistry; |
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use Saito\Posting\PostingInterface; |
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use Saito\User\CurrentUser\CurrentUserInterface; |
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/** |
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* Checks, prepares and persists postings to the entries table |
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* |
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* This isolates stricter table rules/validations from properties set or checked |
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* depending on the CurrentUser or other higher level user-input. |
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*/ |
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class PostingComponent extends Component |
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{ |
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/** @var EntriesTable */ |
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private $table; |
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/** @var FieldFilter */ |
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private $fieldFilter; |
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/** |
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* {@inheritDoc} |
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*/ |
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public function initialize(array $config) |
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{ |
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/** @var EntriesTable */ |
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$this->table = TableRegistry::getTableLocator()->get('Entries'); |
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$this->fieldFilter = (new FieldFilter()) |
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->setConfig('create', ['category_id', 'pid', 'subject', 'text']) |
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->setConfig('update', ['category_id', 'subject', 'text']); |
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} |
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/** |
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* Creates a new posting from user |
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* |
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* @param array $data raw posting data |
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* @param CurrentUserInterface $CurrentUser the current user |
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* @return |
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*/ |
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public function createPosting(array $data, CurrentUserInterface $CurrentUser) |
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{ |
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$data = $this->fieldFilter->filterFields($data, 'create'); |
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if (!empty($data['pid'])) { |
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/// new posting is answer to existing posting |
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$parent = $this->table->get($data['pid']); |
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if (empty($parent)) { |
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throw new \InvalidArgumentException( |
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'Parent posting for creating a new answer not found.', |
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1564756571 |
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) ; |
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} |
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$parentId = $parent->get('id'); |
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$categoryId = $parent->get('category_id'); |
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$data = $this->prepareChildPosting($parent, $data); |
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} else { |
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/// if no pid is provided the new posting is root-posting |
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$data['pid'] = 0; |
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$parentId = $data['pid']; |
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if (empty($data['category_id'])) { |
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throw new \InvalidArgumentException( |
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'New root posting requires a category.', |
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1564756571 |
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) ; |
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} |
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$categoryId = (int)$data['category_id']; |
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} |
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$isRoot = $parentId == 0; |
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$allowed = $this->validateCategoryIsAllowed($isRoot, $categoryId, $CurrentUser); |
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if (!$allowed) { |
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return false; |
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} |
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/// set user who created the posting |
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$data['user_id'] = $CurrentUser->getId(); |
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$data['name'] = $CurrentUser->get('username'); |
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return $this->table->createPosting($data); |
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} |
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/** |
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* Updates an existing posting |
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* |
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* @param Entry $posting |
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* @param array $data |
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* @param CurrentUserInteface $CurrentUser |
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* @return void |
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*/ |
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public function update(Entry $posting, array $data, CurrentUserInterface $CurrentUser) |
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{ |
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$data = $this->fieldFilter->filterFields($data, 'update'); |
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$isRoot = $posting->isRoot(); |
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$categoryId = $posting->get('category_id'); |
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$allowed = $this->validateCategoryIsAllowed($isRoot, $categoryId, $CurrentUser); |
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if (!$allowed) { |
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return false; |
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} |
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$parent = $this->table->get($posting->get('pid')); |
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if (!$isRoot) { |
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$data = $this->prepareChildPosting($parent, $data); |
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} |
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$data['edited_by'] = $CurrentUser->get('username'); |
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return $this->table->update($posting, $data); |
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} |
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/** |
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* Marks a sub-posting as solution to a root posting |
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* |
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* @param integer $id posting-ID |
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* @param CurrentUserInterface $CurrentUser current user |
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* @return boolean success |
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*/ |
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public function toggleSolve(int $id, CurrentUserInterface $CurrentUser): bool |
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{ |
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$posting = $this->table->get($id, ['return' => 'Entity']); |
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if (empty($posting) || $posting->isRoot()) { |
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throw new \InvalidArgumentException; |
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} |
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$rootId = $posting->get('tid'); |
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$rootPosting = $this->table->get($rootId); |
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if ($rootPosting->get('user_id') !== $CurrentUser->getId()) { |
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throw new ForbiddenException; |
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} |
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return $this->table->toggleSolve($posting); |
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} |
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/** |
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* Populates data of an answer derived from parent the parent-posting |
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* |
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* @param PostingInterface $parent parent-posting |
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* @param array $data current posting data |
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* @return array populated $data |
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*/ |
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public function prepareChildPosting(PostingInterface $parent, array $data): array |
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{ |
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if (empty($data['subject'])) { |
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/// if new subject is empty use the parent's subject |
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$data['subject'] = $parent->get('subject'); |
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} |
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$data['tid'] = $parent->get('tid'); |
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$data['category_id'] = $parent->get('category_id'); |
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return $data; |
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} |
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/** |
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* Checks that entries are only in existing and allowed categories |
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* |
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* @param bool $isRoot Is the posting to create in the category a root posting? |
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* @param int $categoryId The category to check in. |
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* @param CurrentUserInterface $CurrentUser Currrent User |
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* @return bool Is user allowed? |
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*/ |
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private function validateCategoryIsAllowed(bool $isRoot, int $categoryId, CurrentUserInterface $CurrentUser): bool |
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{ |
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$action = $isRoot ? 'thread' : 'answer'; |
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return $CurrentUser->getCategories()->permission($action, $categoryId); |
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} |
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} |
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Schlaefer /
Saito
