Adding the unpublish api call

apps/rp/models.py

@@ -204,6 +204,14 @@ class Article(models.Model):
         else:
             return self.status
 
+    @transition(field=status, source='PUBLISHED', target='DRAFT',
+                permission="rp.can_change_status")
+    def unpublish(self):
+        """
+        Unpublish an article from the RP, and reset it back to a _DRAFT_.
+        """
+        pass
+
     @transition(field=status, source='NEW', target='NEW',
                 permission="rp.can_vote")
     @transition(field=status, source='DRAFT', target='DRAFT',

apps/rp/tests/test_article.py

@@ -103,6 +103,11 @@ class TestArticle(TestCase):
         self.article.refresh_from_db()
         assert self.article.title != old_title
 
+    def test_unpublish(self):
+        a = ArticleFactory(status='PUBLISHED')
+        a.unpublish()
+        assert a.status == 'DRAFT'
+
 
 class TestArticleViews(TestCase):
     def setUp(self):
@@ -377,3 +382,17 @@ class TestArticleApi(TestCase):
         r = self.client.post('/api/articles/{}/unset-priority/'.format(a.id))
         assert r.status_code == 200
         assert r.data['priority'] is False
+
+    def test_api_unpublish_unauth(self):
+        a = ArticleFactory(status='PUBLISHED')
+        r = self.client.post('/api/articles/{}/unpublish/'.format(a.id))
+        assert r.status_code == 401
+
+    def test_api_unpublish(self):
+        self.jedi.user_permissions.add(Permission.objects.get(
+            codename='can_change_status'))
+        self.client.force_login(self.jedi)
+        a = ArticleFactory(status='PUBLISHED')
+        r = self.client.post('/api/articles/{}/unpublish/'.format(a.id))
+        assert r.status_code == 200
+        assert r.data['status'] == 'DRAFT'