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<?php |
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/** |
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* Comment Class |
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* |
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* @license http://opensource.org/licenses/MIT The MIT License (MIT) |
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* @author Omar El Gabry <[email protected]> |
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*/ |
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class Comment extends Model{ |
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/** |
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* get all comments of a post |
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* |
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* @access public |
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* @param array $postId |
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* @param integer $pageNum |
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* @param integer $commentsCreated |
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* @return array Associative array of the comments, and Pagination Object(View More). |
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* |
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*/ |
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public function getAll($postId, $pageNum = 1, $commentsCreated = 0){ |
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// Only for comments, We use $commentsCreated |
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// What's it? Whenever we create a comment, It will be added in-place to the current comments in current .php page, |
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// So, we need to track of those were created, and skip them in the Pagination($offset & $totalCount). |
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$options = "WHERE comments.post_id = :post_id "; |
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$pagination = Pagination::pagination("comments", $options, [":post_id" => $postId], $pageNum, $commentsCreated); |
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$offset = $pagination->getOffset() + $commentsCreated; |
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$limit = $pagination->perPage; |
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$database = Database::openConnection(); |
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$query = "SELECT comments.id AS id, users.profile_picture, users.id AS user_id, users.name AS user_name, comments.content, comments.date "; |
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$query .= "FROM users, posts, comments "; |
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$query .= "WHERE comments.post_id = :post_id "; |
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$query .= "AND posts.id = comments.post_id "; |
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$query .= "AND users.id = comments.user_id "; |
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$query .= "ORDER BY comments.date DESC "; |
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$query .= "LIMIT $limit OFFSET $offset"; |
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$database->prepare($query); |
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$database->bindValue(':post_id', (int)$postId); |
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$database->execute(); |
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$comments = $database->fetchAllAssociative(); |
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// you can have post with no comments yet! |
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return array("comments" => $comments, "pagination" => $pagination); |
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} |
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/** |
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* get comment by Id |
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* |
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* @access public |
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* @param string $commentId |
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* @return array Array holds the data of the comment |
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* |
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*/ |
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View Code Duplication |
public function getById($commentId){ |
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$database = Database::openConnection(); |
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$query = "SELECT comments.id AS id, users.profile_picture, users.id AS user_id, users.name AS user_name, comments.content, comments.date "; |
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$query .= "FROM users, posts, comments "; |
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$query .= "WHERE comments.id = :id "; |
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$query .= "AND posts.id = comments.post_id "; |
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$query .= "AND users.id = comments.user_id LIMIT 1"; |
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$database->prepare($query); |
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$database->bindValue(':id', (int)$commentId); |
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$database->execute(); |
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$comment = $database->fetchAllAssociative(); |
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return $comment; |
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} |
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/** |
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* create Comment. |
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* |
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* @access public |
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* @param string $userId |
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* @param string $postId |
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* @param string $content |
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* @return array Array holds the created comment |
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* @throws Exception If comment couldn't be created |
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* |
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*/ |
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public function create($userId, $postId, $content){ |
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$validation = new Validation(); |
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if(!$validation->validate([ 'Content' => [$content, 'required|minLen(1)|maxLen(300)']])) { |
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$this->errors = $validation->errors(); |
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return false; |
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} |
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$database = Database::openConnection(); |
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$query = "INSERT INTO comments (user_id, post_id, content) VALUES (:user_id, :post_id, :content)"; |
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$database->prepare($query); |
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$database->bindValue(':user_id', $userId); |
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$database->bindValue(':post_id', $postId); |
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$database->bindValue(':content', $content); |
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$database->execute(); |
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if($database->countRows() !== 1){ |
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throw new Exception ("Couldn't add comment"); |
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} |
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$commentId = $database->lastInsertedId(); |
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$comment = $this->getById($commentId); |
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return $comment; |
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} |
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/** |
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* update Comment |
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* |
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* @access public |
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* @param string $commentId |
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* @param string $content |
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* @return array Array holds the updated comment |
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* @throws Exception If comment couldn't be updated |
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* |
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*/ |
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View Code Duplication |
public function update($commentId, $content){ |
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$validation = new Validation(); |
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if(!$validation->validate([ 'Content' => [$content, 'required|minLen(1)|maxLen(300)']])) { |
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$this->errors = $validation->errors(); |
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return false; |
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} |
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$database = Database::openConnection(); |
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$query = "UPDATE comments SET content = :content WHERE id = :id LIMIT 1 "; |
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$database->prepare($query); |
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$database->bindValue(':content', $content); |
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$database->bindValue(':id', $commentId); |
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$result = $database->execute(); |
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if(!$result){ |
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throw new Exception("Couldn't update comment of ID: " . $commentId); |
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} |
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$comment = $this->getById($commentId); |
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return $comment; |
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} |
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/** |
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* counting the number of comments of a post. |
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* |
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* @access public |
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* @static static method |
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* @param string $postId |
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* @return integer number of comments |
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* |
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*/ |
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View Code Duplication |
public static function countComments($postId){ |
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$database = Database::openConnection(); |
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$database->prepare("SELECT COUNT(*) AS count FROM comments WHERE post_id = :post_id"); |
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$database->bindValue(":post_id", $postId); |
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$database->execute(); |
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return (int)$database->fetchAssociative()["count"]; |
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} |
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} |
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.