todolists: Add json endpoint for todo detail view

Add a /todo/$name/json endpoint which returns the json for a todo list
item.

todolists/tests/test_views.py

@@ -27,3 +27,9 @@ def test_todolist_detail(self):
         response = self.client.get(self.todolist.get_absolute_url())
         self.assertEqual(response.status_code, 200)
         self.assertIn(self.todolist.name, response.content)
+
+    def test_todolist_json(self):
+        response = self.client.get(self.todolist.get_absolute_url() + 'json')
+        self.assertEqual(response.status_code, 200)
+        data = response.json()
+        self.assertEqual(data['name'], self.todolist.name)

todolists/urls.py

 from django.conf.urls import url
 from django.contrib.auth.decorators import permission_required
 
-from .views import (view_redirect, view, add, edit, flag,
+from .views import (view_redirect, view, view_json, add, edit, flag,
         list_pkgbases, DeleteTodolist, TodolistListView)
 
 urlpatterns = [
@@ -13,6 +13,7 @@
     url(r'^add/$',
         permission_required('todolists.add_todolist')(add)),
     url(r'^(?P<slug>[-\w]+)/$', view),
+    url(r'^(?P<slug>[-\w]+)/json$', view_json),
     url(r'^(?P<slug>[-\w]+)/edit/$',
         permission_required('todolists.change_todolist')(edit)),
     url(r'^(?P<slug>[-\w]+)/delete/$',

todolists/views.py

@@ -14,7 +14,7 @@
 
 from main.models import Package, Repo
 from main.utils import find_unique_slug
-from packages.utils import attach_maintainers
+from packages.utils import attach_maintainers, PackageJSONEncoder
 from .models import Todolist, TodolistPackage
 from .utils import get_annotated_todolists, attach_staging
 
@@ -236,4 +236,23 @@ def send_todolist_emails(todo_list, new_packages):
                 [maint],
                 fail_silently=True)
 
+
+class TodoListJSONEncoder(PackageJSONEncoder):
+    def default(self, obj):
+        if isinstance(obj, Todolist):
+            return {
+                'id': obj.pk,
+                'name': obj.name,
+                'description': obj.description,
+                'packages': [pkg.pkg for pkg in obj.packages()],
+            }
+
+        return super(TodoListJSONEncoder, self).default(obj)
+
+
+def view_json(request, slug):
+    todolist = get_object_or_404(Todolist, slug=slug)
+    to_json = json.dumps(todolist, ensure_ascii=False, cls=TodoListJSONEncoder)
+    return HttpResponse(to_json, content_type='application/json')
+
 # vim: set ts=4 sw=4 et: