def get_posts(self, migration, scan_url=None):
"""Fetches a page of posts.
Args:
migration: Migration
scan_url: string, the API URL to fetch the current page of posts. If None,
starts at the beginning.
Returns:
(posts, next_url). posts is a sequence of InstagramPosts.
next_url is a string, the API URL to use for the next scan, or None
if there is nothing more to scan.
"""
api = InstagramAPI(
client_id=appengine_config.INSTAGRAM_CLIENT_ID,
client_secret=appengine_config.INSTAGRAM_CLIENT_SECRET,
access_token=self.access_token)
user_id = self.key().name()
media, next_url = api.user_recent_media(user_id,
with_next_url=scan_url)
converter = as_instagram.Instagram(None)
imedia = [
InstagramMedia(key_name_parts=(m.id, migration.key().name()),
json_data=json.dumps(
converter.media_to_activity(m))) for m in media
]
return imedia, next_url
