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annotate membermap/views.py @ 1024:6164cc091649

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Perform image_check on membermap messages.
author Brian Neal <bgneal@gmail.com>
date Thu, 10 Dec 2015 21:11:10 -0600
parents 21c592cac71c
children e1c03da72818
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
bgneal@1024 16 from core.html import ImageCheckError
bgneal@1024 17 from core.html import image_check
bgneal@1024 18 from core.markup import site_markup
gremmie@1 19 from membermap.models import MapEntry
gremmie@1 20 from membermap.forms import MapEntryForm
bgneal@266 21
bgneal@266 22 CACHE_KEY = 'membermap_json'
bgneal@266 23 CACHE_TIMEOUT = 5 * 60
gremmie@1 24
gremmie@1 25
gremmie@1 26 def index(request):
gremmie@1 27 entry = None
gremmie@1 28 if request.user.is_authenticated():
gremmie@1 29 try:
gremmie@1 30 entry = MapEntry.objects.get(user=request.user)
gremmie@1 31 except MapEntry.DoesNotExist:
gremmie@1 32 pass
gremmie@1 33 if entry is not None:
gremmie@1 34 form = MapEntryForm(initial={
gremmie@1 35 'location': entry.location,
gremmie@1 36 'message': entry.message})
gremmie@1 37 else:
gremmie@1 38 form = MapEntryForm()
gremmie@1 39
gremmie@1 40 return render_to_response('membermap/index.html', {
gremmie@1 41 'form': form,
gremmie@1 42 },
gremmie@1 43 context_instance = RequestContext(request))
gremmie@1 44
gremmie@1 45
gremmie@1 46 def query(request):
gremmie@1 47 """
gremmie@1 48 This view is called by AJAX. If the user is logged in, return
gremmie@1 49 a JSON object that consists of:
gremmie@1 50 "users" : array of user objects
gremmie@1 51 "recent" : array of usernames recently modified
gremmie@1 52 """
bgneal@266 53 if not request.user.is_authenticated():
bgneal@266 54 return HttpResponseForbidden('You must be logged in.')
gremmie@1 55
bgneal@266 56 # Do we have all the JSON cached?
bgneal@266 57 s = cache.get(CACHE_KEY)
bgneal@266 58 if s:
gremmie@1 59 return HttpResponse(s, content_type='application/json')
gremmie@1 60
bgneal@266 61 # Compute JSON for the map
bgneal@791 62 entries = MapEntry.objects.select_related('user', 'user__profile').\
bgneal@791 63 order_by('user__username')
bgneal@266 64 users = []
bgneal@791 65 avatar_urls = []
bgneal@266 66 recent = []
bgneal@266 67 for entry in entries.iterator():
bgneal@266 68 users.append(dict(name=entry.user.username,
bgneal@266 69 lat=entry.lat,
bgneal@266 70 lon=entry.lon,
bgneal@266 71 message=entry.html,
bgneal@266 72 ))
bgneal@791 73 avatar = entry.user.profile.avatar
bgneal@791 74 if avatar and avatar.url:
bgneal@791 75 avatar_urls.append(avatar.url)
bgneal@791 76 else:
bgneal@791 77 avatar_urls.append(None)
bgneal@266 78 recent.append((entry.date_updated, entry.user.username))
bgneal@266 79
bgneal@266 80 # Render the messages that go in the balloons
bgneal@791 81 for user, avatar_url in zip(users, avatar_urls):
bgneal@266 82 user['message'] = render_to_string('membermap/balloon.html',
bgneal@791 83 dict(user=user, avatar_url=avatar_url))
bgneal@266 84
bgneal@266 85 # Produce the list of recent updates
bgneal@266 86 recent.sort(reverse=True)
bgneal@266 87 del recent[10:]
bgneal@266 88 recent = [entry[1] for entry in recent]
bgneal@266 89
bgneal@266 90 # Create the JSON for the map
bgneal@266 91 result = dict(users=users, recent=recent)
bgneal@266 92 s = json.dumps(result, ensure_ascii=False)
bgneal@266 93
bgneal@266 94 cache.set(CACHE_KEY, s, CACHE_TIMEOUT)
bgneal@266 95 return HttpResponse(s, content_type='application/json')
gremmie@1 96
gremmie@1 97
gremmie@1 98 @require_POST
gremmie@1 99 def add(request):
gremmie@1 100 """
gremmie@1 101 This view is called by AJAX to add/update the user to the map.
gremmie@1 102 It returns the new JSON representation of the user.
gremmie@1 103 """
gremmie@1 104 if not request.user.is_authenticated():
gremmie@1 105 return HttpResponseForbidden('You must be logged in.')
gremmie@1 106
gremmie@1 107 loc = request.POST.get('loc', None)
gremmie@1 108 lat = request.POST.get('lat', None)
gremmie@1 109 lon = request.POST.get('lon', None)
bgneal@1024 110 msg = request.POST.get('msg', '').strip()
gremmie@1 111
gremmie@1 112 if loc is None or lat is None or lon is None:
gremmie@1 113 return HttpResponseBadRequest('Missing parameters')
gremmie@1 114
gremmie@1 115 try:
gremmie@1 116 lat = float(lat)
gremmie@1 117 lon = float(lon)
gremmie@1 118 except ValueError:
gremmie@1 119 return HttpResponseBadRequest('Invalid lat/lon')
gremmie@1 120
bgneal@1024 121 html = ''
bgneal@1024 122 if msg:
bgneal@1024 123 html = site_markup(msg)
bgneal@1024 124 try:
bgneal@1024 125 image_check(html)
bgneal@1024 126 except ImageCheckError as ex:
bgneal@1024 127 return HttpResponseBadRequest(str(ex))
bgneal@1024 128
gremmie@1 129 try:
gremmie@1 130 entry = MapEntry.objects.get(user=request.user)
gremmie@1 131 except MapEntry.DoesNotExist:
gremmie@1 132 entry = MapEntry(user=request.user)
gremmie@1 133
gremmie@1 134 entry.location = loc
gremmie@1 135 entry.lat = lat
gremmie@1 136 entry.lon = lon
gremmie@1 137 entry.message = msg
bgneal@1024 138 entry.save(html=html)
gremmie@1 139
bgneal@266 140 cache.delete(CACHE_KEY)
bgneal@266 141
bgneal@266 142 avatar_url = None
bgneal@789 143 profile = entry.user.profile
bgneal@266 144 if profile.avatar and profile.avatar.url:
bgneal@266 145 avatar_url = profile.avatar.url
bgneal@266 146
bgneal@266 147 u = dict(name=entry.user.username,
bgneal@266 148 lat=entry.lat,
bgneal@266 149 lon=entry.lon,
bgneal@266 150 message=entry.html)
bgneal@266 151
bgneal@266 152 u['message'] = render_to_string('membermap/balloon.html',
bgneal@266 153 dict(user=u, avatar_url=avatar_url))
bgneal@266 154
bgneal@266 155 result = json.dumps(u, ensure_ascii=False)
bgneal@266 156 return HttpResponse(result, content_type='application/json')
gremmie@1 157
gremmie@1 158
gremmie@1 159 @require_POST
gremmie@1 160 def delete(request):
gremmie@1 161 """
gremmie@1 162 This view is called by AJAX to delete the user from the map.
gremmie@1 163 """
gremmie@1 164 if not request.user.is_authenticated():
gremmie@1 165 return HttpResponseForbidden('You must be logged in.')
gremmie@1 166
gremmie@1 167 try:
gremmie@1 168 entry = MapEntry.objects.get(user=request.user)
gremmie@1 169 except MapEntry.DoesNotExist:
gremmie@1 170 pass
gremmie@1 171 else:
gremmie@1 172 entry.delete()
bgneal@266 173 cache.delete(CACHE_KEY)
gremmie@1 174
gremmie@1 175 return HttpResponse('')