Implement deletion of form submission

- Write a view function to delete submission(views.delete_submission)
- Route the function to 'submissions/<page_id>/<submission_id>/delete/'
- Create a button for each row in submission list

wagtail/wagtailforms/templates/wagtailforms/list_submissions.html

@@ -10,18 +10,24 @@
             {% for heading in data_headings %}
                 <th>{{ heading }}</th>
             {% endfor %}
+            <th>{% trans "Delete Submission" %}</th>
         </tr>
     </thead>
     <tbody>
         {% for row in data_rows %}
             <tr>
-                {% for cell in row %}
+                {% for cell in row.fields %}
                     <td>
                         {{ cell }}
                     </td>
                 {% endfor %}
+                <td>
+                <a class="button" href="
+                    {% url 'wagtailforms_delete_submission' form_page.id row.model_id %}">
+                    delete</a>
+                </td>
             </tr>
         {% endfor %}
     </tbody>
 </table>
-</div>
+</div>

wagtail/wagtailforms/urls.py

@@ -6,4 +6,5 @@ from wagtail.wagtailforms import views
 urlpatterns = [
     url(r'^$', views.index, name='wagtailforms_index'),
     url(r'^submissions/(\d+)/$', views.list_submissions, name='wagtailforms_list_submissions'),
+    url(r'^submissions/(\d+)/(\d+)/delete/$', views.delete_submission, name='wagtailforms_delete_submission')
 ]

wagtail/wagtailforms/views.py

@@ -5,7 +5,7 @@ import csv
 from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
 from django.core.exceptions import PermissionDenied
 from django.http import HttpResponse
-from django.shortcuts import get_object_or_404, render
+from django.shortcuts import get_object_or_404, render, redirect
 from django.utils.encoding import smart_str
 
 from wagtail.wagtailcore.models import Page
@@ -31,6 +31,12 @@ def index(request):
         'form_pages': form_pages,
     })
 
+def delete_submission(request, page_id, submission_id):
+    if not get_forms_for_user(request.user).filter(id=page_id).exists():
+        raise PermissionDenied
+    FormSubmission.objects.get(id=submission_id).delete()
+
+    return redirect('wagtailforms_list_submissions', page_id)
 
 def list_submissions(request, page_id):
     form_page = get_object_or_404(Page, id=page_id).specific
@@ -93,7 +99,11 @@ def list_submissions(request, page_id):
     for s in submissions:
         form_data = s.get_data()
         data_row = [s.submit_time] + [form_data.get(name) for name, label in data_fields]
-        data_rows.append(data_row)
+        data_rows.append(
+          {
+            "model_id": s.id,
+            "fields": data_row
+          })
 
     return render(request, 'wagtailforms/index_submissions.html', {
          'form_page': form_page,