Support for exporting stats as JSONP.

Fixes #577
Signed-off-by: Michal Čihař <michal@cihar.com>

docs/api.rst

@@ -70,7 +70,11 @@ Weblate provides various exports to allow you further process the data.
 
 .. http:get:: /exports/stats/(string:project)/(string:component)/
 
-    Retrieves statistics for given component in JSON format.
+    :query integer indent: pretty printed indentation
+    :query string jsonp: JSONP callback function to wrap the data
+
+    Retrieves statistics for given component in JSON format. Optionally as
+    JSONP when you specify the callback in the ``jsonp`` parameter.
 
     You can get pretty-printed output by appending ``?indent=1`` to the
     request.

docs/changes.rst

@@ -23,6 +23,7 @@ Released on ? 2014.
 * Compatibility with older Git versions.
 * Improved ACL support.
 * Added buttons for per language quotes and other special chars.
+* Support for exporting stats as JSONP.
 
 weblate 1.9
 -----------

weblate/trans/tests/test_exports.py

@@ -59,6 +59,13 @@ class ExportsViewTest(ViewTestCase):
         parsed = json.loads(response.content)
         self.assertEqual(parsed[0]['name'], 'Czech')
 
+    def test_export_stats_jsonp(self):
+        response = self.client.get(
+            reverse('export_stats', kwargs=self.kw_subproject),
+            {'jsonp': 'test_callback'}
+        )
+        self.assertContains(response, 'test_callback(')
+
     def test_data(self):
         response = self.client.get(
             reverse('data_root')

weblate/trans/views/api.py

@@ -269,6 +269,10 @@ def export_stats(request, project, subproject):
     except (ValueError, KeyError):
         indent = None
 
+    jsonp = None
+    if 'jsonp' in request.GET and request.GET['jsonp']:
+        jsonp = request.GET['jsonp']
+
     response = []
     for trans in subprj.translation_set.all():
         response.append({
@@ -288,11 +292,20 @@ def export_stats(request, project, subproject):
             'url': trans.get_share_url(),
             'url_translate': get_site_url(trans.get_absolute_url()),
         })
+    json_data = json.dumps(
+        response,
+        default=json_dt_handler,
+        indent=indent,
+    )
+    if jsonp:
+        return HttpResponse(
+            '{0}({1})'.format(
+                jsonp,
+                json_data,
+            ),
+            content_type='application/javascript'
+        )
     return HttpResponse(
-        json.dumps(
-            response,
-            default=json_dt_handler,
-            indent=indent,
-        ),
+        json_data,
         content_type='application/json'
     )