FEAT: Add revision history to assets and suppliers (#387)

* FEAT: Initial work on revision history for assets

The revision history for individual items mostly works, though it shows database ID where it should show asset ID. Recent changes feed isn't yet done.

* FEAT: Initial implementation of asset activity stream

* CHORE: Fix pep8

* FIX: Asset history table 'branding'

* FIX: Individual asset version history is now correctly filtered

* FEAT: Make revision history for suppliers accessible

* CHORE: *sings* And a pep8 in a broken tree...

* Refactored out duplicated code from `AssetVersionHistory

* CHORE: pep8

And another random bit of wierd whitespace I found

Co-authored-by: Matthew Smith <mattysmith22@googlemail.com>

Closes #358

assets/views.py

@@ -5,7 +5,9 @@ from django.views.decorators.csrf import csrf_exempt
 from django.utils.decorators import method_decorator
 from django.urls import reverse
 from django.db.models import Q
+from django.shortcuts import get_object_or_404
 from assets import models, forms
+from RIGS import versioning
 
 
 @method_decorator(csrf_exempt, name='dispatch')
@@ -36,7 +38,8 @@ class AssetList(LoginRequiredMixin, generic.ListView):
         if len(query_string) == 0:
             queryset = self.model.objects.all()
         elif len(query_string) >= 3:
-            queryset = self.model.objects.filter(Q(asset_id__exact=query_string) | Q(description__icontains=query_string))
+            queryset = self.model.objects.filter(
+                Q(asset_id__exact=query_string) | Q(description__icontains=query_string))
         else:
             queryset = self.model.objects.filter(Q(asset_id__exact=query_string))
 
@@ -46,7 +49,8 @@ class AssetList(LoginRequiredMixin, generic.ListView):
         if len(form.cleaned_data['status']) > 0:
             queryset = queryset.filter(status__in=form.cleaned_data['status'])
         elif self.hide_hidden_status:
-            queryset = queryset.filter(status__in=models.AssetStatus.objects.filter(should_show=True))
+            queryset = queryset.filter(
+                status__in=models.AssetStatus.objects.filter(should_show=True))
 
         return queryset
 
@@ -203,3 +207,24 @@ class SupplierUpdate(generic.UpdateView):
     model = models.Supplier
     form_class = forms.SupplierForm
     template_name = 'supplier_update.html'
+
+
+class SupplierVersionHistory(versioning.VersionHistory):
+    template_name = "asset_version_history.html"
+
+
+# TODO: Reduce SQL queries
+class AssetVersionHistory(versioning.VersionHistory):
+    def get_object(self, **kwargs):
+        return get_object_or_404(models.Asset, asset_id=self.kwargs['pk'])
+
+
+class ActivityTable(versioning.ActivityTable):
+    model = versioning.RIGSVersion
+    template_name = "asset_activity_table.html"
+    paginate_by = 25
+
+    def get_queryset(self):
+        versions = versioning.RIGSVersion.objects.get_for_multiple_models(
+            [models.Asset, models.Supplier])
+        return versions