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annotate podcast/views.py @ 661:15dbe0ccda95

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Prevent exceptions when viewing downloads in the admin when the file doesn't exist on the filesystem. This is usually seen in development but can also happen in production if the file is missing.
author Brian Neal <bgneal@gmail.com>
date Tue, 14 May 2013 21:02:47 -0500
parents ee87ea74d46b
children 89b240fe9297
rev   line source
bgneal@402 1 """
bgneal@402 2 Views for the podcast application.
bgneal@402 3
bgneal@402 4 """
bgneal@143 5 import os.path
bgneal@143 6 from urlparse import urlparse
gremmie@1 7
gremmie@1 8 from django.shortcuts import render_to_response
gremmie@1 9 from django.template import RequestContext
gremmie@1 10 from django.shortcuts import get_object_or_404
bgneal@402 11 import django.utils.simplejson as json
gremmie@1 12
gremmie@1 13 from podcast.models import Channel
gremmie@1 14 from podcast.models import Item
gremmie@1 15
gremmie@1 16
bgneal@143 17 def get_ext_from_url(url):
bgneal@403 18 """
bgneal@403 19 This function returns the extension part of the path from the given
bgneal@403 20 url.
bgneal@403 21 """
bgneal@403 22 ext = os.path.splitext(urlparse(url).path)[1]
bgneal@403 23 if ext.startswith('.'):
bgneal@403 24 ext = ext[1:]
bgneal@403 25 return ext
bgneal@402 26
bgneal@402 27
bgneal@402 28 def jplayer_params(ext, url, alt_ext, alt_url):
bgneal@403 29 """
bgneal@403 30 Compute and returns a 2-tuple: (jplayer_media, jplayer_supplied)
bgneal@403 31 where
bgneal@403 32 jplayer_media: a string representation of the JSON for the
bgneal@403 33 jplayer setMedia parameter
bgneal@403 34 jplayer_supplied: the string for the jplayer supplied parameter
bgneal@402 35
bgneal@403 36 media_list is an input list or tuple of 2-tuples of the form
bgneal@403 37 (media_type, url)
bgneal@403 38 where media_type is e.g. mp3, m4a, ogg, etc.
bgneal@402 39
bgneal@403 40 """
bgneal@403 41 media = dict([(ext, url)])
bgneal@403 42 if alt_ext and alt_url:
bgneal@403 43 media[alt_ext] = alt_url
bgneal@402 44
bgneal@403 45 # prefer mp4 to mp3
bgneal@403 46 if alt_ext is None:
bgneal@403 47 supplied = [ext]
bgneal@403 48 elif ext == "m4a":
bgneal@403 49 supplied = (ext, alt_ext)
bgneal@403 50 else:
bgneal@403 51 supplied = (alt_ext, ext)
bgneal@402 52
bgneal@403 53 supplied = ", ".join(supplied)
bgneal@402 54
bgneal@403 55 return json.dumps(media), supplied
bgneal@143 56
bgneal@143 57
gremmie@1 58 def index(request):
bgneal@403 59 try:
bgneal@403 60 channel = Channel.objects.get(pk=1)
bgneal@403 61 except Channel.DoesNotExist:
bgneal@403 62 channel = None
gremmie@1 63
bgneal@403 64 return render_to_response('podcast/index.html', {
bgneal@403 65 'channel': channel,
bgneal@403 66 },
bgneal@403 67 context_instance = RequestContext(request))
gremmie@1 68
gremmie@1 69
gremmie@1 70 def detail(request, id):
bgneal@403 71 podcast = get_object_or_404(Item.objects.select_related(), pk = id)
bgneal@143 72
bgneal@403 73 ext = get_ext_from_url(podcast.enclosure_url)
bgneal@403 74 alt_ext = None
bgneal@403 75 if podcast.alt_enclosure_url:
bgneal@403 76 alt_ext = get_ext_from_url(podcast.alt_enclosure_url)
bgneal@143 77
bgneal@403 78 jplayer_media, jplayer_supplied = jplayer_params(ext, podcast.enclosure_url,
bgneal@403 79 alt_ext, podcast.alt_enclosure_url)
bgneal@402 80
bgneal@403 81 return render_to_response('podcast/detail.html', {
bgneal@403 82 'channel': podcast.channel,
bgneal@403 83 'podcast': podcast,
bgneal@403 84 'ext': ext,
bgneal@403 85 'alt_ext': alt_ext,
bgneal@403 86 'jplayer_media': jplayer_media,
bgneal@403 87 'jplayer_supplied': jplayer_supplied,
bgneal@403 88 },
bgneal@403 89 context_instance = RequestContext(request))
bgneal@402 90
gremmie@1 91
gremmie@1 92 def feed(request):
bgneal@403 93 try:
bgneal@403 94 channel = Channel.objects.get(pk=1)
bgneal@403 95 except Channel.DoesNotExist:
bgneal@403 96 channel = None
bgneal@403 97
bgneal@403 98 if channel:
bgneal@403 99 channel.items = Item.objects.filter(channel=channel)
bgneal@403 100
bgneal@403 101 return render_to_response('podcast/feed.xml', {
bgneal@403 102 'channel': channel,
bgneal@403 103 },
bgneal@403 104 context_instance = RequestContext(request))