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