Events: simple csv participants export

cof/urls.py

@@ -123,6 +123,12 @@ urlpatterns = [
     path("config", gestioncof_views.ConfigUpdate.as_view(), name="config.edit"),
 ]
 
+if "events" in settings.INSTALLED_APPS:
+    # The new event application is still in development
+    # → for now it is namespaced below events_v2
+    # → when the old events system is out, move this above in the others apps
+    urlpatterns += [path("event_v2/", include("events.urls"))]
+
 if "debug_toolbar" in settings.INSTALLED_APPS:
     import debug_toolbar
 

events/urls.py

@@ -0,0 +1,11 @@
+from django.urls import path
+from events import views
+
+app_name = "events"
+urlpatterns = [
+    path(
+        "csv/participants/<int:event_id>",
+        views.participants_csv,
+        name="csv-participants",
+    )
+]

events/views.py

@@ -0,0 +1,24 @@
+import csv
+
+from django.contrib.auth.decorators import login_required, permission_required
+from django.http import HttpResponse
+from django.shortcuts import get_object_or_404
+from django.utils.text import slugify
+from events.models import Event
+
+
+@login_required
+@permission_required("events.view_event")
+def participants_csv(request, event_id):
+    event = get_object_or_404(Event, id=event_id)
+
+    filename = "{}-participants.csv".format(slugify(event.title))
+    response = HttpResponse(content_type="text/csv")
+    response["Content-Disposition"] = 'attachment; filename="{}"'.format(filename)
+
+    writer = csv.writer(response)
+    writer.writerow(["username", "email", "prénom", "nom de famille"])
+    for user in event.subscribers.all():
+        writer.writerow([user.username, user.email, user.first_name, user.last_name])
+
+    return response