1 files changed, 16 insertions, 4 deletions
diff --git a/classes/Model.php b/classes/Model.php
index 3e99856..792027c 100644
--- a/classes/Model.php
+++ b/classes/Model.php
@@ -34,6 +34,12 @@ class ModelIllegalAccessException extends Exception {
 }
 
 /**
+ * Thrown in Model when a call to __set() fails
+ */
+class ModelSetFailedException {
+}
+
+/**
  * An abstract interface to a database table
  */
 abstract class Model {
@@ -82,17 +88,23 @@ abstract class Model {
 	 * @param mixed $value        The value
 	 *
 	 * @throws PDOException       Database error
-	 *
-	 * @return bool               True iff the value has been changed
 	 */
 	public function __set($key, $value) {
 		if (!in_array($key, $this->fillable_columns)) {
 			throw new ModelIllegalAccessException("Column $key cannot be edited.");
 		}
+		if ($this->data[$key] == $value) {
+			return;
+		}
 		$stmt = $this->pdo->prepare("UPDATE `".$this->table()."` SET `$key`=? WHERE `{$this->primary_key}`=?");
-		$stmt->execute([$this->mutator($value), $this->data[$this->primary_key]]);
+		$stmt->execute([
+			$this->mutator($key, $value),
+			$this->data[$this->primary_key]
+		]);
+		if ($stmt->rowCount() != 1) {
+			throw new ModelEditFailedException();
+		}
 		$this->data[$key] = $value;
-		return $this->rowCount() != 0;
 	}
 
 	/**