src/project/admin.py

@@ -2,8 +2,10 @@
 from django.contrib import admin
 from cms.extensions import PageExtensionAdmin
 from parler.admin import TranslatableAdmin
-
+from aldryn_forms.models import FormSubmission
+from aldryn_forms.admin.base import BaseFormSubmissionAdmin
 from project.models import ImageExtension, SliderItemQualification, Notification
+from project.views import CustomFormExportWizardView
 
 
 @admin.register(ImageExtension)
@@ -19,3 +21,15 @@ class SliderItemQualificationAdmin(TranslatableAdmin):
 @admin.register(Notification)
 class NotificationAdmin(TranslatableAdmin):
     pass
+
+
+admin.site.unregister(FormSubmission)
+
+
+@admin.register(FormSubmission)
+class FormSubmissionAdmin(BaseFormSubmissionAdmin):
+
+    def get_form_export_view(self):
+        return CustomFormExportWizardView.as_view(admin=self, file_type='xls')
+
+

src/project/views.py

@@ -4,7 +4,10 @@ from cms.models import Page
 from django.core.urlresolvers import reverse_lazy
 from django.views.generic import RedirectView
 from django.views.generic.edit import FormView
-
+from aldryn_forms.admin.views import FormExportWizardView
+from aldryn_forms.admin.exporter import Exporter
+from tablib import Dataset
+from django.http import HttpResponse
 from project.forms import NewsletterSubscriptionForm
 
 
@@ -45,3 +48,57 @@ class MediaRedirectView(RedirectView):
 
     def get_redirect_url(self, *args, **kwargs):
         return self.request.GET.get('url', None)
+
+
+class CustomExporter(Exporter):
+    custom_fields = ['sent_at']
+
+    def get_dataset(self, fields):
+        headers = [field.rpartition('-')[0] for field in fields]
+
+        for custom_field in self.custom_fields:
+            headers.append(custom_field)
+
+        dataset = Dataset(headers=headers)
+
+        for submission in self.queryset.only('data').iterator():
+            row_data = []
+            form_fields = [field for field in submission.get_form_data()
+                           if field.field_id in fields]
+
+            for header in fields:
+                for field in form_fields:
+                    if field.field_id == header:
+                        row_data.append(field.value)
+                        break
+                else:
+                    row_data.append('')
+
+            if row_data:
+                for custom_field in self.custom_fields:
+                    row_data.append(getattr(submission, custom_field).strftime('%d.%m.%Y %H:%M:%S'))
+                dataset.append(row_data)
+        return dataset
+
+
+class CustomFormExportWizardView(FormExportWizardView):
+    
+    def done(self, form_list, **kwargs):
+        """
+        this step only runs if all forms are valid.
+        """
+        form_iter = iter(form_list)
+        step_1_form = next(form_iter)
+        step_2_form = next(form_iter)
+
+        fields = step_2_form.get_fields()
+        queryset = step_1_form.get_queryset()
+
+        dataset = CustomExporter(queryset=queryset).get_dataset(fields=fields)
+
+        filename = step_1_form.get_filename(extension=self.file_type)
+
+        content_type = self.get_content_type()
+        response = HttpResponse(dataset.xls, content_type=content_type)
+        response['Content-Disposition'] = 'attachment; filename=%s' % filename
+        return response