Add list filter and export options to assignment list

server/assignments/admin.py

@@ -1,6 +1,9 @@
+import csv
+
 from django.contrib import admin
 
 # Register your models here.
+from django.http import HttpResponse
 from django.urls import reverse
 from django.utils.html import format_html
 
@@ -17,15 +20,48 @@ class StudentSubmissionInline(admin.TabularInline):
     def link(self, obj):
         return format_html('<a href={}>{}</a>'.format(reverse('admin:assignments_studentsubmission_change', args=(obj.id,)), obj.text))
 
+
 @admin.register(Assignment)
 class AssignmentAdmin(admin.ModelAdmin):
     list_display = ('title', 'module', 'deleted', 'owner', )
     autocomplete_fields = ('owner',)
+    actions = ['export_assignments_to_csv', 'export_submissions_to_csv']
+    list_filter = ('owner', 'module', 'user_created')
+    search_fields = ('id', 'title')
 
     inlines = [
         StudentSubmissionInline
     ]
 
+    def export_assignments_to_csv(self, request, queryset):
+        response = HttpResponse(content_type='text/csv')
+        response['Content-Disposition'] = 'attachment;filename=assignment-export.csv'
+
+        writer = csv.writer(response)
+        field_names = ['ID', 'Titel', 'Auftragstext', 'Modul']
+        writer.writerow(field_names)
+        for assignment in queryset.all():
+            writer.writerow([assignment.id, assignment.title, assignment.assignment, assignment.module])
+
+        return response
+
+    export_assignments_to_csv.short_description = 'Auftragstexte exportieren'
+
+    def export_submissions_to_csv(self, request, queryset):
+        response = HttpResponse(content_type='text/csv')
+        response['Content-Disposition'] = 'attachment;filename=assignment-submission-export.csv'
+
+        writer = csv.writer(response)
+        field_names = ['Assignment-ID', 'Text', 'Mit Lehrer geteilt',]
+        writer.writerow(field_names)
+        for assignment in queryset.all():
+            for submission in assignment.submissions.filter(final=True):
+                writer.writerow([submission.assignment.id, submission.text, submission.final])
+
+        return response
+
+    export_submissions_to_csv.short_description = 'Lösungstexte exportieren'
+
 
 @admin.register(StudentSubmission)
 class StudentSubmissionAdmin(admin.ModelAdmin):