Add support for cloning an upgrade record

until this is all ironed out, seems like it will often be helpful

tailbone/views/master.py

@@ -72,6 +72,7 @@ class MasterView(View):
     mergeable = False
     downloadable = False
     executable = False
+    cloneable = False
 
     supports_mobile = False
     mobile_creatable = False
@@ -312,6 +313,30 @@ class MasterView(View):
                                                         tools=self.make_row_grid_tools(instance))
         return self.render_to_response('view', context)
 
+    def clone(self):
+        """
+        View for cloning an object's data into a new object.
+        """
+        self.viewing = True
+        instance = self.get_instance()
+        form = self.make_form(instance)
+        self.configure_clone_form(form)
+        if self.request.method == 'POST' and self.request.POST.get('clone') == 'clone':
+            cloned = self.clone_instance(instance)
+            return self.redirect(self.get_action_url('view', cloned))
+        return self.render_to_response('clone', {
+            'instance': instance,
+            'instance_title': self.get_instance_title(instance),
+            'instance_url': self.get_action_url('view', instance),
+            'form': form,
+        })
+
+    def configure_clone_form(self, form):
+        pass
+
+    def clone_instance(self, instance):
+        raise NotImplementedError
+
     def versions(self):
         """
         View to list version history for an object.
@@ -1805,6 +1830,14 @@ class MasterView(View):
                 config.add_view(cls, attr='view_version', route_name='{}.version'.format(route_prefix),
                                 permission='{}.versions'.format(permission_prefix))
 
+        # clone
+        if cls.cloneable:
+            config.add_tailbone_permission(permission_prefix, '{}.clone'.format(permission_prefix),
+                                           "Clone an existing {0} as a new {0}".format(model_title))
+            config.add_route('{}.clone'.format(route_prefix), '{}/{{{}}}/clone'.format(url_prefix, model_key))
+            config.add_view(cls, attr='clone', route_name='{}.clone'.format(route_prefix),
+                            permission='{}.clone'.format(permission_prefix))
+
         # download
         if cls.downloadable:
             config.add_route('{}.download'.format(route_prefix), '{}/{{{}}}/download'.format(url_prefix, model_key))

tailbone/views/upgrades.py

@@ -53,6 +53,7 @@ class UpgradeView(MasterView):
     model_class = model.Upgrade
     executable = True
     downloadable = True
+    cloneable = True
     labels = {
         'executed_by': "Executed by",
         'status_code': "Status",
@@ -165,6 +166,20 @@ class UpgradeView(MasterView):
             f.remove_field('package_diff')
             f.remove_field('exit_code')
 
+    def configure_clone_form(self, f):
+        f.fields = ['description', 'notes', 'enabled']
+
+    def clone_instance(self, original):
+        cloned = self.model_class()
+        cloned.created = make_utc()
+        cloned.created_by = self.request.user
+        cloned.description = original.description
+        cloned.notes = original.notes
+        cloned.enabled = original.enabled
+        self.Session.add(cloned)
+        self.Session.flush()
+        return cloned
+
     def render_stdout_file(self, upgrade, fieldname):
         if fieldname.startswith('stderr'):
             filename = 'stderr.log'