Fixed belongs_to primary key bug.

laravel/database/eloquent/model.php

@@ -390,6 +390,8 @@ abstract class Model {
 			$query = $this->query()->where(static::$key, '=', $this->get_key());
 
 			$result = $query->update($this->get_dirty()) === 1;
+
+			if ($result) $this->fire_event('updated');
 		}
 
 		// If the model does not exist, we will insert the record and retrieve the last
@@ -402,6 +404,8 @@ abstract class Model {
 			$this->set_key($id);
 
 			$this->exists = $result = is_numeric($this->get_key());
+
+			if ($result) $this->fire_event('created');
 		}
 
 		// After the model has been "saved", we will set the original attributes to

laravel/database/eloquent/relationships/belongs_to.php

@@ -32,7 +32,7 @@ class Belongs_To extends Relationship {
 	 */
 	protected function constrain()
 	{
-		$this->table->where($this->base->key(), '=', $this->foreign_value());
+		$this->table->where($this->model->key(), '=', $this->foreign_value());
 	}
 
 	/**