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comparison bandmap/views.py @ 827:5103edd3acc4

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Bandmap: initial version complete. Javascript queries server for band data. View created to handle query. Test created for view. Link added to map in sidebar. Template tweaks.
author Brian Neal <bgneal@gmail.com>
date Sat, 27 Sep 2014 19:41:41 -0500
parents d91356818cef
children b9973588af28
comparison
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826:d7e4c08b2e8b 827:5103edd3acc4
1 """Views for the bandmap application. 1 """Views for the bandmap application.
2 2
3 """ 3 """
4 import json
5
4 from django.contrib.auth.decorators import login_required 6 from django.contrib.auth.decorators import login_required
5 from django.shortcuts import redirect, render 7 from django.shortcuts import redirect, render
6 from django.contrib import messages as django_messages 8 from django.contrib import messages as django_messages
9 from django.http import HttpResponse
10 from django.template.loader import render_to_string
11 from django.core.cache import cache
7 12
8 from bandmap.forms import BandForm 13 from bandmap.forms import BandForm
14 from bandmap.models import BandEntry
9 15
10 16
11 SUCCESS = "Successfully submitted {} for admin review. Thanks!" 17 SUCCESS = "Successfully submitted {} for admin review. Thanks!"
12 18
13 19
33 form = BandForm() 39 form = BandForm()
34 40
35 return render(request, 'bandmap/add.html', { 41 return render(request, 'bandmap/add.html', {
36 'form': form, 42 'form': form,
37 }) 43 })
44
45
46 def query(request):
47 """Retrieves the band map entries and returns them as JSON.
48
49 """
50 show_param = request.GET.get('show', 'all')
51 if show_param not in ['all', 'active', 'inactive']:
52 show_param = 'all'
53
54 # Do we have the results cached already?
55 cache_key = 'bandmap-results-{}'.format(show_param)
56 results = cache.get(cache_key)
57 if results:
58 return HttpResponse(results, content_type='application/json')
59
60 # Generate results
61 qs = BandEntry.objects.filter(is_approved=True)
62 if show_param == 'active':
63 qs = qs.filter(is_active=True)
64 elif show_param == 'inactive':
65 qs = qs.filter(is_active=False)
66
67 bands = []
68 for band in qs.iterator():
69 bands.append({
70 'name': band.name,
71 'url': band.url,
72 'lat': band.lat,
73 'lon': band.lon,
74 'note': render_to_string('bandmap/balloon.html', {'band': band}),
75 })
76 results = json.dumps(bands)
77
78 # Store in cache
79 cache.set(cache_key, results, 300)
80
81 return HttpResponse(results, content_type='application/json')