gremmie@1: """
gremmie@1: Views for the membermap application.
gremmie@1: """
gremmie@1: from django.shortcuts import render_to_response
bgneal@266: from django.template.loader import render_to_string
gremmie@1: from django.template import RequestContext
gremmie@1: from django.http import HttpResponse
gremmie@1: from django.http import HttpResponseBadRequest
gremmie@1: from django.http import HttpResponseForbidden
gremmie@1: from django.views.decorators.http import require_POST
bgneal@266: import django.utils.simplejson as json
bgneal@266: from django.core.cache import cache
gremmie@1:
gremmie@1: from membermap.models import MapEntry
gremmie@1: from membermap.forms import MapEntryForm
bgneal@266: from bio.models import UserProfile
bgneal@266:
bgneal@266: CACHE_KEY = 'membermap_json'
bgneal@266: CACHE_TIMEOUT = 5 * 60
gremmie@1:
gremmie@1:
gremmie@1: def index(request):
gremmie@1: entry = None
gremmie@1: if request.user.is_authenticated():
gremmie@1: try:
gremmie@1: entry = MapEntry.objects.get(user=request.user)
gremmie@1: except MapEntry.DoesNotExist:
gremmie@1: pass
gremmie@1: if entry is not None:
gremmie@1: form = MapEntryForm(initial={
gremmie@1: 'location': entry.location,
gremmie@1: 'message': entry.message})
gremmie@1: else:
gremmie@1: form = MapEntryForm()
gremmie@1:
gremmie@1: return render_to_response('membermap/index.html', {
gremmie@1: 'form': form,
gremmie@1: },
gremmie@1: context_instance = RequestContext(request))
gremmie@1:
gremmie@1:
gremmie@1: def query(request):
gremmie@1: """
gremmie@1: This view is called by AJAX. If the user is logged in, return
gremmie@1: a JSON object that consists of:
gremmie@1: "users" : array of user objects
gremmie@1: "recent" : array of usernames recently modified
gremmie@1: """
bgneal@266: if not request.user.is_authenticated():
bgneal@266: return HttpResponseForbidden('You must be logged in.')
gremmie@1:
bgneal@266: # Do we have all the JSON cached?
bgneal@266: s = cache.get(CACHE_KEY)
bgneal@266: if s:
gremmie@1: return HttpResponse(s, content_type='application/json')
gremmie@1:
bgneal@266: # Compute JSON for the map
bgneal@266: entries = MapEntry.objects.all().select_related().order_by('user__username')
bgneal@266: users = []
bgneal@266: user_ids = []
bgneal@266: recent = []
bgneal@266: for entry in entries.iterator():
bgneal@266: users.append(dict(name=entry.user.username,
bgneal@266: lat=entry.lat,
bgneal@266: lon=entry.lon,
bgneal@266: message=entry.html,
bgneal@266: ))
bgneal@266: user_ids.append(entry.user.id)
bgneal@266: recent.append((entry.date_updated, entry.user.username))
bgneal@266:
bgneal@266: # Get avatars for all users
bgneal@266: profiles = UserProfile.objects.filter(user__in=user_ids).select_related()
bgneal@266: avatars = {}
bgneal@266: for profile in profiles.iterator():
bgneal@266: if profile.avatar and profile.avatar.url:
bgneal@266: avatars[profile.user.username] = profile.avatar.url
bgneal@266:
bgneal@266: # Render the messages that go in the balloons
bgneal@266: for user in users:
bgneal@266: user['message'] = render_to_string('membermap/balloon.html',
bgneal@266: dict(user=user, avatar_url=avatars.get(user['name'])))
bgneal@266:
bgneal@266: # Produce the list of recent updates
bgneal@266: recent.sort(reverse=True)
bgneal@266: del recent[10:]
bgneal@266: recent = [entry[1] for entry in recent]
bgneal@266:
bgneal@266: # Create the JSON for the map
bgneal@266: result = dict(users=users, recent=recent)
bgneal@266: s = json.dumps(result, ensure_ascii=False)
bgneal@266:
bgneal@266: cache.set(CACHE_KEY, s, CACHE_TIMEOUT)
bgneal@266: return HttpResponse(s, content_type='application/json')
gremmie@1:
gremmie@1:
gremmie@1: @require_POST
gremmie@1: def add(request):
gremmie@1: """
gremmie@1: This view is called by AJAX to add/update the user to the map.
gremmie@1: It returns the new JSON representation of the user.
gremmie@1: """
gremmie@1: if not request.user.is_authenticated():
gremmie@1: return HttpResponseForbidden('You must be logged in.')
gremmie@1:
gremmie@1: loc = request.POST.get('loc', None)
gremmie@1: lat = request.POST.get('lat', None)
gremmie@1: lon = request.POST.get('lon', None)
gremmie@1: msg = request.POST.get('msg', '')
gremmie@1:
gremmie@1: if loc is None or lat is None or lon is None:
gremmie@1: return HttpResponseBadRequest('Missing parameters')
gremmie@1:
gremmie@1: try:
gremmie@1: lat = float(lat)
gremmie@1: lon = float(lon)
gremmie@1: except ValueError:
gremmie@1: return HttpResponseBadRequest('Invalid lat/lon')
gremmie@1:
gremmie@1: try:
gremmie@1: entry = MapEntry.objects.get(user=request.user)
gremmie@1: except MapEntry.DoesNotExist:
gremmie@1: entry = MapEntry(user=request.user)
gremmie@1:
gremmie@1: entry.location = loc
gremmie@1: entry.lat = lat
gremmie@1: entry.lon = lon
gremmie@1: entry.message = msg
gremmie@1: entry.save()
gremmie@1:
bgneal@266: cache.delete(CACHE_KEY)
bgneal@266:
bgneal@266: avatar_url = None
bgneal@266: profile = entry.user.get_profile()
bgneal@266: if profile.avatar and profile.avatar.url:
bgneal@266: avatar_url = profile.avatar.url
bgneal@266:
bgneal@266: u = dict(name=entry.user.username,
bgneal@266: lat=entry.lat,
bgneal@266: lon=entry.lon,
bgneal@266: message=entry.html)
bgneal@266:
bgneal@266: u['message'] = render_to_string('membermap/balloon.html',
bgneal@266: dict(user=u, avatar_url=avatar_url))
bgneal@266:
bgneal@266: result = json.dumps(u, ensure_ascii=False)
bgneal@266: return HttpResponse(result, content_type='application/json')
gremmie@1:
gremmie@1:
gremmie@1: @require_POST
gremmie@1: def delete(request):
gremmie@1: """
gremmie@1: This view is called by AJAX to delete the user from the map.
gremmie@1: """
gremmie@1: if not request.user.is_authenticated():
gremmie@1: return HttpResponseForbidden('You must be logged in.')
gremmie@1:
gremmie@1: try:
gremmie@1: entry = MapEntry.objects.get(user=request.user)
gremmie@1: except MapEntry.DoesNotExist:
gremmie@1: pass
gremmie@1: else:
gremmie@1: entry.delete()
bgneal@266: cache.delete(CACHE_KEY)
gremmie@1:
gremmie@1: return HttpResponse('')