Add basic image upload support for tempmon appliances

tailbone/views/master.py

@@ -105,6 +105,7 @@ class MasterView(View):
     deleting = False
     executing = False
     has_pk_fields = False
+    has_image = False
 
     row_attrs = {}
     cell_attrs = {}
@@ -854,6 +855,22 @@ class MasterView(View):
                                                         tools=self.make_row_grid_tools(instance))
         return self.render_to_response('view', context)
 
+    def image(self):
+        """
+        View which renders the object's image as a response.
+        """
+        obj = self.get_instance()
+        image_bytes = self.get_image_bytes(obj)
+        if not image_bytes:
+            raise self.notfound()
+        # TODO: how to properly detect image type?
+        self.request.response.content_type = str('image/jpeg')
+        self.request.response.body = image_bytes
+        return self.request.response
+
+    def get_image_bytes(self, obj):
+        raise NotImplementedError
+
     def clone(self):
         """
         View for cloning an object's data into a new object.
@@ -1433,7 +1450,9 @@ class MasterView(View):
         return self.render_to_response('edit', context)
 
     def save_edit_form(self, form):
+        uploads = self.normalize_uploads(form)
         obj = self.objectify(form, self.form_deserialized)
+        self.process_uploads(obj, form, uploads)
         self.after_edit(obj)
         self.Session.flush()
 
@@ -2977,6 +2996,12 @@ class MasterView(View):
                 config.add_view(cls, attr='view_version', route_name='{}.version'.format(route_prefix),
                                 permission='{}.versions'.format(permission_prefix))
 
+        # image
+        if cls.has_image:
+            config.add_route('{}.image'.format(route_prefix), '{}/{{{}}}/image'.format(url_prefix, model_key))
+            config.add_view(cls, attr='image', route_name='{}.image'.format(route_prefix),
+                            permission='{}.view'.format(permission_prefix))
+
         # clone
         if cls.cloneable:
             config.add_tailbone_permission(permission_prefix, '{}.clone'.format(permission_prefix),