Added transaction method to database connection and eloquent model.

laravel/database/eloquent/model.php

@@ -103,17 +103,6 @@ abstract class Model {
 		$this->fill($attributes);
 	}
 
-	/**
-	 * Set the accessible attributes for the given model.
-	 *
-	 * @param  array  $attributes
-	 * @return void
-	 */
-	public static function accessible($attributes)
-	{
-		static::$accessible = $attributes;
-	}
-
 	/**
 	 * Hydrate the model with an array of attributes.
 	 *
@@ -157,6 +146,28 @@ abstract class Model {
 		return $this;
 	}
 
+	/**
+	 * Set the accessible attributes for the given model.
+	 *
+	 * @param  array  $attributes
+	 * @return void
+	 */
+	public static function accessible($attributes)
+	{
+		static::$accessible = $attributes;
+	}
+
+	/**
+	 * Execute a callback wrapped in a database transaction.
+	 *
+	 * @param  Closure  $callback
+	 * @return void
+	 */
+	public static function transaction($callback)
+	{
+		with(new static)->query()->connection()->transaction($callback);
+	}
+
 	/**
 	 * Create a new model and store it in the database.
 	 *
@@ -211,9 +222,7 @@ abstract class Model {
 	 */
 	public static function all()
 	{
-		$model = new static;
-
-		return $model->query()->get();
+		return with(new static)->query()->get();
 	}
 
 	/**