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<?php |
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/** |
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* NoteModel |
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* This is basically a simple CRUD (Create/Read/Update/Delete) demonstration. |
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*/ |
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class NoteModel |
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{ |
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/** |
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* Get all notes (notes are just example data that the user has created) |
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* @return array an array with several objects (the results) |
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*/ |
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public static function getAllNotes() |
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{ |
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$database = DatabaseFactory::getFactory()->getConnection(); |
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$sql = "SELECT user_id, note_id, note_text FROM notes WHERE user_id = :user_id"; |
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$query = $database->prepare($sql); |
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$query->execute(array(':user_id' => Session::get('user_id'))); |
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// fetchAll() is the PDO method that gets all result rows |
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return $query->fetchAll(); |
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} |
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/** |
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* Get a single note |
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* @param int $note_id id of the specific note |
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* @return object a single object (the result) |
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*/ |
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public static function getNote($note_id) |
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{ |
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$database = DatabaseFactory::getFactory()->getConnection(); |
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$sql = "SELECT user_id, note_id, note_text FROM notes WHERE user_id = :user_id AND note_id = :note_id LIMIT 1"; |
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$query = $database->prepare($sql); |
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$query->execute(array(':user_id' => Session::get('user_id'), ':note_id' => $note_id)); |
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// fetch() is the PDO method that gets a single result |
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return $query->fetch(); |
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} |
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/** |
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* Set a note (create a new one) |
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* @param string $note_text note text that will be created |
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* @return bool feedback (was the note created properly ?) |
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*/ |
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public static function createNote($note_text) |
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{ |
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if (!$note_text || strlen($note_text) == 0) { |
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Session::add('feedback_negative', Text::get('FEEDBACK_NOTE_CREATION_FAILED')); |
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return false; |
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} |
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$database = DatabaseFactory::getFactory()->getConnection(); |
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$sql = "INSERT INTO notes (note_text, user_id) VALUES (:note_text, :user_id)"; |
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$query = $database->prepare($sql); |
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$query->execute(array(':note_text' => $note_text, ':user_id' => Session::get('user_id'))); |
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if ($query->rowCount() == 1) { |
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return true; |
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} |
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// default return |
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Session::add('feedback_negative', Text::get('FEEDBACK_NOTE_CREATION_FAILED')); |
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return false; |
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} |
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/** |
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* Update an existing note |
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* @param int $note_id id of the specific note |
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* @param string $note_text new text of the specific note |
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* @return bool feedback (was the update successful ?) |
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*/ |
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public static function updateNote($note_id, $note_text) |
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{ |
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if (!$note_id || !$note_text) { |
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return false; |
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} |
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$database = DatabaseFactory::getFactory()->getConnection(); |
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$sql = "UPDATE notes SET note_text = :note_text WHERE note_id = :note_id AND user_id = :user_id LIMIT 1"; |
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$query = $database->prepare($sql); |
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$query->execute(array(':note_id' => $note_id, ':note_text' => $note_text, ':user_id' => Session::get('user_id'))); |
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if ($query->rowCount() == 1) { |
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return true; |
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} |
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Session::add('feedback_negative', Text::get('FEEDBACK_NOTE_EDITING_FAILED')); |
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return false; |
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} |
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/** |
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* Delete a specific note |
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* @param int $note_id id of the note |
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* @return bool feedback (was the note deleted properly ?) |
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*/ |
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public static function deleteNote($note_id) |
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{ |
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if (!$note_id) { |
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return false; |
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} |
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$database = DatabaseFactory::getFactory()->getConnection(); |
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$sql = "DELETE FROM notes WHERE note_id = :note_id AND user_id = :user_id LIMIT 1"; |
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$query = $database->prepare($sql); |
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$query->execute(array(':note_id' => $note_id, ':user_id' => Session::get('user_id'))); |
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if ($query->rowCount() == 1) { |
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return true; |
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} |
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// default return |
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Session::add('feedback_negative', Text::get('FEEDBACK_NOTE_DELETION_FAILED')); |
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return false; |
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} |
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} |
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panique /
huge
