Mercurial > public > sg101

annotate membermap/views.py @ 1017:21c592cac71c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
ManifestStaticFilesStorage: stop using form Media. It's okay for the admin, but not for user facing stuff.
author Brian Neal <bgneal@gmail.com>
date Sun, 06 Dec 2015 14:48:30 -0600
parents 0ca691cccf8d
children 6164cc091649
rev   line source
gremmie@1 1 """
gremmie@1 2 Views for the membermap application.
bgneal@679 3
gremmie@1 4 """
bgneal@679 5 import json
bgneal@679 6
gremmie@1 7 from django.shortcuts import render_to_response
bgneal@266 8 from django.template.loader import render_to_string
gremmie@1 9 from django.template import RequestContext
gremmie@1 10 from django.http import HttpResponse
gremmie@1 11 from django.http import HttpResponseBadRequest
gremmie@1 12 from django.http import HttpResponseForbidden
gremmie@1 13 from django.views.decorators.http import require_POST
bgneal@266 14 from django.core.cache import cache
gremmie@1 15
gremmie@1 16 from membermap.models import MapEntry
gremmie@1 17 from membermap.forms import MapEntryForm
bgneal@266 18
bgneal@266 19 CACHE_KEY = 'membermap_json'
bgneal@266 20 CACHE_TIMEOUT = 5 * 60
gremmie@1 21
gremmie@1 22
gremmie@1 23 def index(request):
gremmie@1 24 entry = None
gremmie@1 25 if request.user.is_authenticated():
gremmie@1 26 try:
gremmie@1 27 entry = MapEntry.objects.get(user=request.user)
gremmie@1 28 except MapEntry.DoesNotExist:
gremmie@1 29 pass
gremmie@1 30 if entry is not None:
gremmie@1 31 form = MapEntryForm(initial={
gremmie@1 32 'location': entry.location,
gremmie@1 33 'message': entry.message})
gremmie@1 34 else:
gremmie@1 35 form = MapEntryForm()
gremmie@1 36
gremmie@1 37 return render_to_response('membermap/index.html', {
gremmie@1 38 'form': form,
gremmie@1 39 },
gremmie@1 40 context_instance = RequestContext(request))
gremmie@1 41
gremmie@1 42
gremmie@1 43 def query(request):
gremmie@1 44 """
gremmie@1 45 This view is called by AJAX. If the user is logged in, return
gremmie@1 46 a JSON object that consists of:
gremmie@1 47 "users" : array of user objects
gremmie@1 48 "recent" : array of usernames recently modified
gremmie@1 49 """
bgneal@266 50 if not request.user.is_authenticated():
bgneal@266 51 return HttpResponseForbidden('You must be logged in.')
gremmie@1 52
bgneal@266 53 # Do we have all the JSON cached?
bgneal@266 54 s = cache.get(CACHE_KEY)
bgneal@266 55 if s:
gremmie@1 56 return HttpResponse(s, content_type='application/json')
gremmie@1 57
bgneal@266 58 # Compute JSON for the map
bgneal@791 59 entries = MapEntry.objects.select_related('user', 'user__profile').\
bgneal@791 60 order_by('user__username')
bgneal@266 61 users = []
bgneal@791 62 avatar_urls = []
bgneal@266 63 recent = []
bgneal@266 64 for entry in entries.iterator():
bgneal@266 65 users.append(dict(name=entry.user.username,
bgneal@266 66 lat=entry.lat,
bgneal@266 67 lon=entry.lon,
bgneal@266 68 message=entry.html,
bgneal@266 69 ))
bgneal@791 70 avatar = entry.user.profile.avatar
bgneal@791 71 if avatar and avatar.url:
bgneal@791 72 avatar_urls.append(avatar.url)
bgneal@791 73 else:
bgneal@791 74 avatar_urls.append(None)
bgneal@266 75 recent.append((entry.date_updated, entry.user.username))
bgneal@266 76
bgneal@266 77 # Render the messages that go in the balloons
bgneal@791 78 for user, avatar_url in zip(users, avatar_urls):
bgneal@266 79 user['message'] = render_to_string('membermap/balloon.html',
bgneal@791 80 dict(user=user, avatar_url=avatar_url))
bgneal@266 81
bgneal@266 82 # Produce the list of recent updates
bgneal@266 83 recent.sort(reverse=True)
bgneal@266 84 del recent[10:]
bgneal@266 85 recent = [entry[1] for entry in recent]
bgneal@266 86
bgneal@266 87 # Create the JSON for the map
bgneal@266 88 result = dict(users=users, recent=recent)
bgneal@266 89 s = json.dumps(result, ensure_ascii=False)
bgneal@266 90
bgneal@266 91 cache.set(CACHE_KEY, s, CACHE_TIMEOUT)
bgneal@266 92 return HttpResponse(s, content_type='application/json')
gremmie@1 93
gremmie@1 94
gremmie@1 95 @require_POST
gremmie@1 96 def add(request):
gremmie@1 97 """
gremmie@1 98 This view is called by AJAX to add/update the user to the map.
gremmie@1 99 It returns the new JSON representation of the user.
gremmie@1 100 """
gremmie@1 101 if not request.user.is_authenticated():
gremmie@1 102 return HttpResponseForbidden('You must be logged in.')
gremmie@1 103
gremmie@1 104 loc = request.POST.get('loc', None)
gremmie@1 105 lat = request.POST.get('lat', None)
gremmie@1 106 lon = request.POST.get('lon', None)
gremmie@1 107 msg = request.POST.get('msg', '')
gremmie@1 108
gremmie@1 109 if loc is None or lat is None or lon is None:
gremmie@1 110 return HttpResponseBadRequest('Missing parameters')
gremmie@1 111
gremmie@1 112 try:
gremmie@1 113 lat = float(lat)
gremmie@1 114 lon = float(lon)
gremmie@1 115 except ValueError:
gremmie@1 116 return HttpResponseBadRequest('Invalid lat/lon')
gremmie@1 117
gremmie@1 118 try:
gremmie@1 119 entry = MapEntry.objects.get(user=request.user)
gremmie@1 120 except MapEntry.DoesNotExist:
gremmie@1 121 entry = MapEntry(user=request.user)
gremmie@1 122
gremmie@1 123 entry.location = loc
gremmie@1 124 entry.lat = lat
gremmie@1 125 entry.lon = lon
gremmie@1 126 entry.message = msg
gremmie@1 127 entry.save()
gremmie@1 128
bgneal@266 129 cache.delete(CACHE_KEY)
bgneal@266 130
bgneal@266 131 avatar_url = None
bgneal@789 132 profile = entry.user.profile
bgneal@266 133 if profile.avatar and profile.avatar.url:
bgneal@266 134 avatar_url = profile.avatar.url
bgneal@266 135
bgneal@266 136 u = dict(name=entry.user.username,
bgneal@266 137 lat=entry.lat,
bgneal@266 138 lon=entry.lon,
bgneal@266 139 message=entry.html)
bgneal@266 140
bgneal@266 141 u['message'] = render_to_string('membermap/balloon.html',
bgneal@266 142 dict(user=u, avatar_url=avatar_url))
bgneal@266 143
bgneal@266 144 result = json.dumps(u, ensure_ascii=False)
bgneal@266 145 return HttpResponse(result, content_type='application/json')
gremmie@1 146
gremmie@1 147
gremmie@1 148 @require_POST
gremmie@1 149 def delete(request):
gremmie@1 150 """
gremmie@1 151 This view is called by AJAX to delete the user from the map.
gremmie@1 152 """
gremmie@1 153 if not request.user.is_authenticated():
gremmie@1 154 return HttpResponseForbidden('You must be logged in.')
gremmie@1 155
gremmie@1 156 try:
gremmie@1 157 entry = MapEntry.objects.get(user=request.user)
gremmie@1 158 except MapEntry.DoesNotExist:
gremmie@1 159 pass
gremmie@1 160 else:
gremmie@1 161 entry.delete()
bgneal@266 162 cache.delete(CACHE_KEY)
gremmie@1 163
gremmie@1 164 return HttpResponse('')