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comparison gpp/membermap/views.py @ 1:dbd703f7d63a

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Initial import of sg101 stuff from private repository.
author gremmie
date Mon, 06 Apr 2009 02:43:12 +0000
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children 4532ed27bed8
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0:900ba3c7b765 1:dbd703f7d63a
1 """
2 Views for the membermap application.
3 """
4 from django.shortcuts import render_to_response
5 from django.template import RequestContext
6 from django.http import HttpResponse
7 from django.http import HttpResponseBadRequest
8 from django.http import HttpResponseForbidden
9 from django.views.decorators.http import require_POST
10
11 from membermap.models import MapEntry
12 from membermap.forms import MapEntryForm
13
14
15 def index(request):
16 entry = None
17 if request.user.is_authenticated():
18 try:
19 entry = MapEntry.objects.get(user=request.user)
20 except MapEntry.DoesNotExist:
21 pass
22 if entry is not None:
23 form = MapEntryForm(initial={
24 'location': entry.location,
25 'message': entry.message})
26 else:
27 form = MapEntryForm()
28
29 return render_to_response('membermap/index.html', {
30 'form': form,
31 },
32 context_instance = RequestContext(request))
33
34
35 def query(request):
36 """
37 This view is called by AJAX. If the user is logged in, return
38 a JSON object that consists of:
39 "users" : array of user objects
40 "recent" : array of usernames recently modified
41 """
42 if request.user.is_authenticated():
43 qs = MapEntry.objects.values_list('json', flat=True).order_by('user__username')
44 s = '{"users":[' + ','.join(qs) + '], "recent":['
45
46 names = MapEntry.objects.values_list('user__username', flat=True)[:10]
47 s += ','.join(['"%s"' % name for name in names])
48 s += ']}'
49 return HttpResponse(s, content_type='application/json')
50
51 return HttpResponseForbidden('You must be logged in.')
52
53
54 @require_POST
55 def add(request):
56 """
57 This view is called by AJAX to add/update the user to the map.
58 It returns the new JSON representation of the user.
59 """
60 if not request.user.is_authenticated():
61 return HttpResponseForbidden('You must be logged in.')
62
63 loc = request.POST.get('loc', None)
64 lat = request.POST.get('lat', None)
65 lon = request.POST.get('lon', None)
66 msg = request.POST.get('msg', '')
67
68 if loc is None or lat is None or lon is None:
69 return HttpResponseBadRequest('Missing parameters')
70
71 try:
72 lat = float(lat)
73 lon = float(lon)
74 except ValueError:
75 return HttpResponseBadRequest('Invalid lat/lon')
76
77 try:
78 entry = MapEntry.objects.get(user=request.user)
79 except MapEntry.DoesNotExist:
80 entry = MapEntry(user=request.user)
81
82 entry.location = loc
83 entry.lat = lat
84 entry.lon = lon
85 entry.message = msg
86 entry.save()
87
88 return HttpResponse(entry.json, content_type='application/json')
89
90
91 @require_POST
92 def delete(request):
93 """
94 This view is called by AJAX to delete the user from the map.
95 """
96 if not request.user.is_authenticated():
97 return HttpResponseForbidden('You must be logged in.')
98
99 try:
100 entry = MapEntry.objects.get(user=request.user)
101 except MapEntry.DoesNotExist:
102 pass
103 else:
104 entry.delete()
105
106 return HttpResponse('')
107
108 # vim: ts=4 sw=4