Refactored ics code and added filtering.

src/bornhack/urls.py

@@ -135,6 +135,9 @@ urlpatterns = [
                         ScheduleView.as_view(),
                         name='schedule_index'
                     ),
+                    url(
+                        r'^ics/', ICSView.as_view(), name="ics_view"
+                    ),
                     url(
                         r'^proposals/', include([
                             url(

src/program/ics.py

@@ -1,13 +0,0 @@
-import icalendar
-
-def gen_ics(eventinstances):
-    cal = icalendar.Calendar()
-    for eventinstance in eventinstances:
-        ievent = icalendar.Event()
-        ievent['summary'] = eventinstance.event.title
-        ievent['dtstart'] = icalendar.vDatetime(eventinstance.when.lower).to_ical()
-        ievent['dtend'] = icalendar.vDatetime(eventinstance.when.upper).to_ical()
-        cal.add_component(ievent)
-    return cal.to_ical()
-
-

src/program/models.py

@@ -1,18 +1,22 @@
+import uuid, os
+from datetime import timedelta
+
 from django.contrib.postgres.fields import DateTimeRangeField
 from django.db import models
 from django.utils.text import slugify
 from django.conf import settings
 from django.utils.translation import ugettext_lazy as _
-from utils.models import CreatedUpdatedModel, CampRelatedModel
 from django.core.exceptions import ValidationError
-from datetime import timedelta
 from django.core.urlresolvers import reverse_lazy
-import uuid, os
 from django.core.files.storage import FileSystemStorage
 from django.urls import reverse
 from django.apps import apps
 from django.core.files.base import ContentFile
 
+import icalendar
+
+from utils.models import CreatedUpdatedModel, CampRelatedModel
+
 
 class CustomUrlStorage(FileSystemStorage):
     def __init__(self, location=None):
@@ -436,6 +440,14 @@ class EventInstance(CampRelatedModel):
         minutes = seconds / 60
         return minutes / settings.SCHEDULE_TIMESLOT_LENGTH_MINUTES
 
+    def get_ics_event(self):
+        ievent = icalendar.Event()
+        ievent['summary'] = self.event.title
+        ievent['dtstart'] = icalendar.vDatetime(self.when.lower).to_ical()
+        ievent['dtend'] = icalendar.vDatetime(self.when.upper).to_ical()
+        ievent['location'] = icalendar.vText(self.location.name)
+        return ievent
+
 
 def get_speaker_picture_upload_path(instance, filename):
     """ We want speaker pictures are saved as MEDIA_ROOT/public/speakers/camp-slug/speaker-slug/filename """

src/program/views.py

@@ -1,3 +1,5 @@
+import datetime, os
+
 from django.views.generic import ListView, TemplateView, DetailView, View
 from django.views.generic.edit import CreateView, UpdateView
 from django.conf import settings
@@ -8,11 +10,12 @@ from django.contrib.auth.mixins import LoginRequiredMixin
 from django.contrib import messages
 from django.shortcuts import redirect
 from django.urls import reverse
+
+import icalendar
+
 from camps.mixins import CampViewMixin
 from .mixins import CreateProposalMixin, EnsureUnapprovedProposalMixin, EnsureUserOwnsProposalMixin, EnsureWritableCampMixin, PictureViewMixin, EnsureCFSOpenMixin
 from . import models
-import datetime, os
-from .ics import gen_ics
 
 
 ############## ical calendar ########################################################
@@ -20,7 +23,34 @@ from .ics import gen_ics
 
 class ICSView(CampViewMixin, View):
     def get(self, request, *args, **kwargs):
-        return HttpResponse(gen_ics(models.EventInstance.objects.all()))
+        eventinstances = models.EventInstance.objects.all()
+        type_ = request.GET.get('type', None)
+        location = request.GET.get('location', None)
+
+        if type_:
+            try:
+                eventtype = models.EventType.objects.get(
+                    slug=type_
+                )
+                eventinstances = eventinstances.filter(event__event_type=eventtype)
+            except models.EventType.DoesNotExist:
+                raise Http404
+
+        if location:
+            try:
+                eventlocation = models.EventLocation.objects.get(
+                    slug=location,
+                    camp=self.camp,
+                )
+                eventinstances = eventinstances.filter(location__slug=location)
+            except models.EventLocation.DoesNotExist:
+                raise Http404
+
+        cal = icalendar.Calendar()
+        for event_instance in eventinstances:
+            cal.add_component(event_instance.get_ics_event())
+
+        return HttpResponse(cal.to_ical())
 
 
 ############## proposals ########################################################