def get_persistent_graph(request, *args, **kwargs):
'''
Wraps itself around get facebook graph
But stores the graph in the session, allowing usage across multiple
pageviews.
Note that Facebook session's expire at some point, you can't store this
for permanent usage
Atleast not without asking for the offline_access permission
'''
from open_facebook.api import OpenFacebook
if not request:
logger.info("GPG01 no request")
raise (ValidationError,
'Request is required if you want to use persistent tokens')
graph = None
# some situations like an expired access token require us to refresh our
# graph
require_refresh = False
code = request.REQUEST.get('code')
logger.info("GPG02 code = %s" % code)
if code:
require_refresh = True
local_graph = getattr(request, 'facebook', None)
logger.info("GPG03 local_graph %s" % local_graph)
if local_graph:
# gets the graph from the local memory if available
graph = local_graph
if not graph:
logger.info("GPG04 no graph")
# search for the graph in the session
cached_graph_dict = request.session.get('graph_dict')
if cached_graph_dict:
logger.info("GPG05 graph in session")
graph = OpenFacebook()
graph.__setstate__(cached_graph_dict)
graph._me = None
if not graph or require_refresh:
# gets the new graph, note this might do token conversions (slow)
logger.info("GPG06 getting graph")
graph = get_facebook_graph(request, *args, **kwargs)
# if it's valid replace the old cache
if graph is not None and graph.access_token:
logger.info("GPG07 put graph into session")
request.session['graph_dict'] = graph.__getstate__()
# add the current user id and cache the graph at the request level
_add_current_user_id(graph, request.user)
request.facebook = graph
return graph
def get_persistent_graph(request, *args, **kwargs):
'''
Wraps itself around get facebook graph
But stores the graph in the session, allowing usage across multiple
pageviews.
Note that Facebook session's expire at some point, you can't store this
for permanent usage
Atleast not without asking for the offline_access permission
'''
from open_facebook.api import OpenFacebook
if not request:
logger.info("GPG01 no request")
raise(ValidationError,
'Request is required if you want to use persistent tokens')
graph = None
# some situations like an expired access token require us to refresh our
# graph
require_refresh = False
code = request.REQUEST.get('code')
logger.info("GPG02 code = %s" % code)
if code:
require_refresh = True
local_graph = getattr(request, 'facebook', None)
logger.info("GPG03 local_graph %s" % local_graph)
if local_graph:
# gets the graph from the local memory if available
graph = local_graph
if not graph:
logger.info("GPG04 no graph")
# search for the graph in the session
cached_graph_dict = request.session.get('graph_dict')
if cached_graph_dict:
logger.info("GPG05 graph in session")
graph = OpenFacebook()
graph.__setstate__(cached_graph_dict)
graph._me = None
if not graph or require_refresh:
# gets the new graph, note this might do token conversions (slow)
logger.info("GPG06 getting graph")
graph = get_facebook_graph(request, *args, **kwargs)
# if it's valid replace the old cache
if graph is not None and graph.access_token:
logger.info("GPG07 put graph into session")
request.session['graph_dict'] = graph.__getstate__()
# add the current user id and cache the graph at the request level
_add_current_user_id(graph, request.user)
request.facebook = graph
return graph
