def get(self, story_id, node_id):
"""Handles GET requests."""
(_, _, classroom_url_fragment, topic_url_fragment, story_url_fragment,
node_id) = self.request.path.split('/')
story = story_fetchers.get_story_by_id(story_id)
completed_nodes = story_fetchers.get_completed_nodes_in_story(
self.user_id, story_id)
ordered_nodes = story.story_contents.get_ordered_nodes()
# In case the user is a returning user and has completed nodes in the
# past, redirect to the story page so that the user can continue from
# where they had left off.
# If the node id is not the first node in the story, redirect to
# the story page.
if completed_nodes or node_id != ordered_nodes[0].id:
self.redirect('/learn/%s/%s/story/%s' %
(classroom_url_fragment, topic_url_fragment,
story_url_fragment))
return
(next_exp_ids, next_node_id,
_) = (self._record_node_completion(story_id, node_id, [],
ordered_nodes))
if next_node_id is None:
self.redirect('/learn/%s/%s/story/%s' %
(classroom_url_fragment, topic_url_fragment,
story_url_fragment))
return
redirect_url = '%s/%s' % (feconf.EXPLORATION_URL_PREFIX,
next_exp_ids[0])
redirect_url = utils.set_url_query_parameter(redirect_url,
'classroom_url_fragment',
classroom_url_fragment)
redirect_url = utils.set_url_query_parameter(redirect_url,
'topic_url_fragment',
topic_url_fragment)
redirect_url = utils.set_url_query_parameter(redirect_url,
'story_url_fragment',
story_url_fragment)
redirect_url = utils.set_url_query_parameter(redirect_url, 'node_id',
next_node_id)
self.redirect(redirect_url)
def test_set_url_query_parameter(self) -> None:
"""Test set_url_query_parameter method."""
self.assertEqual(
utils.set_url_query_parameter('http://www.test.com', 'a', 'b'),
'http://www.test.com?a=b')
self.assertEqual(
utils.set_url_query_parameter('http://www.test.com?a=b', 'c', 'd'),
'http://www.test.com?a=b&c=d')
self.assertEqual(
utils.set_url_query_parameter('http://test.com?a=b', 'redirectUrl',
'http://redirect.com'),
'http://test.com?a=b&redirectUrl=http%3A%2F%2Fredirect.com')
with self.assertRaisesRegexp( # type: ignore[no-untyped-call]
Exception, 'URL query parameter name must be a string'):
utils.set_url_query_parameter('http://test.com?a=b', None,
'value') # type: ignore[arg-type]
