let url_encode filter also accept array of query parameters

CHANGELOG

@@ -1,6 +1,7 @@
 * 1.12.3 (2013-XX-XX)
 
  * added a batch filter
+ * added support for encoding an array as query string in the url_encode filter
 
 * 1.12.2 (2013-02-09)
 

doc/filters/url_encode.rst

@@ -1,14 +1,23 @@
 ``url_encode``
 ==============
 
-The ``url_encode`` filter URL encodes a given string:
+.. versionadded:: 1.12.3
+    Support for encoding an array as query string was added in Twig 1.12.3.
+
+The ``url_encode`` filter percent encodes a given string as URL segment
+or an array as query string:
 
 .. code-block:: jinja
 
-    {{ data|url_encode() }}
+    {{ "path-seg*ment"|url_encode }}
+    {# outputs "path-seg%2Ament" #}
+
+    {{ {'param': 'value', 'foo': 'bar'}|url_encode }}
+    {# outputs "param=value&foo=bar" #}
 
 .. note::
 
-    Internally, Twig uses the PHP `urlencode`_ function.
+    Internally, Twig uses the PHP `urlencode`_ or the `http_build_query`_ function.
 
 .. _`urlencode`: http://php.net/urlencode
+.. _`http_build_query`: http://php.net/http_build_query

lib/Twig/Extension/Core.php

@@ -515,15 +515,19 @@ function twig_number_format_filter(Twig_Environment $env, $number, $decimal = nu
 }
 
 /**
- * URL encodes a string.
+ * URL encodes a string as a path segment or an array as a query string.
  *
- * @param string $url A URL
- * @param bool   $raw true to use rawurlencode() instead of urlencode
+ * @param string|array $url A URL or an array of query parameters
+ * @param bool         $raw true to use rawurlencode() instead of urlencode
  *
  * @return string The URL encoded value
  */
 function twig_urlencode_filter($url, $raw = false)
 {
+    if (is_array($url)) {
+        return http_build_query($url, '', '&');
+    }
+
     if ($raw) {
         return rawurlencode($url);
     }

test/Twig/Tests/Fixtures/filters/urlencode.test

@@ -0,0 +1,12 @@
+--TEST--
+"url_encode" filter
+--TEMPLATE--
+{{ {foo: "bar", number: 3, "spéßi%l": "e%c0d@d", "spa ce": ""}|url_encode }}
+{{ {foo: "bar", number: 3, "spéßi%l": "e%c0d@d", "spa ce": ""}|url_encode|raw }}
+{{ {}|url_encode|default("default") }}
+--DATA--
+return array()
+--EXPECT--
+foo=bar&number=3&sp%C3%A9%C3%9Fi%25l=e%25c0d%40d&spa+ce=
+foo=bar&number=3&sp%C3%A9%C3%9Fi%25l=e%25c0d%40d&spa+ce=
+default