urls.py
===
# The main url to kick it all off:
(r'^massupdate/$','scents.massupdate.views.drawMassUpdatePage'),
# Called by Ajax:
url(r'^doit/$','scents.massupdate.views.doit',name="doit"),
# Called by Ajax to pull status:
url(r'^getCount/$','scents.massupdate.views.getCount',name="getcount"),
views.py
===
from django.http import HttpResponse
from django.shortcuts import render_to_response
from django.utils import simplejson
import time
def drawMassUpdatePage( request ):
request.session['count'] = 0
request.session['done'] = False
request.session.modified = True # May not need this.
return render_to_response("massupdate/testajax.html") # template at end
# Kicks off the update. After this starts jquery will call
# getCount periodically to 'pull' results.
def doit( request ):
# Do something long and slow
for i in range(0,5000):
request.session['count'] = i
request.session.save() # Had to do this to actually use the session in getCount.
#time.sleep(2) # Can make it even slower with this.
request.session['done'] = True
# This one is talking to a different func in the js.
return HttpResponse('All done.',mimetype='text/plain')
# This one is being pulled by $.ajax in the js.
def getCount( request ):
i = request.session.get('count', 0 ) # Fetch the count or 0
isitdone = request.session.get('done', False) # Fetch the status or False
if isitdone:
# It's all finished, so send a flag.
d= {"done":True}
j = simplejson.dumps(d)
return HttpResponse( j, mimetype='application/javascript' )
else:
# It's busy, so send a flag and a count
d= {"done":False,"count":i}
j = simplejson.dumps(d)
return HttpResponse( j, mimetype='application/javascript' )
template: testajax.html
===
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