add csv export of day playlists

nonstop/templates/nonstop/somalogline_archive_day.html

@@ -2,6 +2,7 @@
 
 {% block appbar %}
 <h2>Nonstop - {{ day|date:"d/m/Y" }}</h2>
+<span><a href="csv">export CSV</a></span>
 {% endblock %}
 
 {% block content %}

nonstop/urls.py

 from django.conf.urls import url
 
-from .views import SomaDayArchiveView, RedirectTodayView, TrackDetailView, ArtistDetailView
+from .views import SomaDayArchiveView, SomaDayArchiveCsvView, RedirectTodayView, TrackDetailView, ArtistDetailView
 
 urlpatterns = [
     # Example: /2012/nov/10/
@@ -10,4 +10,7 @@ urlpatterns = [
     url(r'^(?P<year>[0-9]{4})/(?P<month>[-\w]+)/(?P<day>[0-9]+)/$',
         SomaDayArchiveView.as_view(),
         name="archive_day"),
+    url(r'^(?P<year>[0-9]{4})/(?P<month>[-\w]+)/(?P<day>[0-9]+)/csv$',
+        SomaDayArchiveCsvView.as_view(),
+        name="archive_day_csv"),
 ]

nonstop/views.py

+import csv
 import datetime
+from cStringIO import StringIO
 
 from django.core.urlresolvers import reverse
+from django.http import HttpResponse
 from django.views.generic.base import RedirectView
 from django.views.generic.dates import DayArchiveView
 from django.views.generic.detail import DetailView
@@ -15,6 +18,25 @@ class SomaDayArchiveView(DayArchiveView):
     month_format = '%m'
 
 
+class SomaDayArchiveCsvView(SomaDayArchiveView):
+    def render_to_response(self, context, **response_kwargs):
+        out = StringIO()
+        writer = csv.writer(out)
+        for line in context['object_list']:
+            if line.filepath.track:
+                writer.writerow([line.play_timestamp.strftime('%Y-%m-%d %H:%M'),
+                    line.filepath.short.encode('utf-8', 'replace'),
+                    line.filepath.track.title.encode('utf-8', 'replace'),
+                    line.filepath.track.artist.name.encode('utf-8', 'replace'),
+                    line.filepath.track.language,
+                    line.filepath.track.instru and 'instru' or '',
+                    line.filepath.track.cfwb and 'cfwb' or ''])
+            else:
+                writer.writerow([line.play_timestamp.strftime('%Y-%m-%d %H:%M'),
+                                line.filepath.short.encode('utf-8', 'replace')])
+        return HttpResponse(out.getvalue(), mimetype='text/csv; charset=utf-8')
+
+
 class RedirectTodayView(RedirectView):
     def get_redirect_url(self, *args, **kwargs):
         today = datetime.datetime.today()