Added etag checking when saving tasks & shots. Still a bit rough.

Needs nicer user interface stuff for explaining what's going on.

attract/shots/__init__.py

@@ -92,6 +92,7 @@ class ShotManager(object):
         api = pillar_api()
         shot = pillarsdk.Node.find(shot_id, api=api)
 
+        shot._etag = fields.pop('_etag')
         shot.name = fields.pop('name')
         shot.description = fields.pop('description')
         shot.properties.status = fields.pop('status')

attract/static/js/tasks.js

@@ -133,13 +133,16 @@ function attract_form_save(form_id, item_id, item_save_url, options={})
             if (console) console.log('Done saving', saved_item);
             $('#status-bar')
                 .text('Saved ' + options.type + '. ' + saved_item._updated);
+            $form.find("input[name='_etag']").val(saved_item._etag);
 
             if (options.done) options.done($item, saved_item);
         })
         .fail(function(xhr_or_response_data) {
             // jQuery sends the response data (if JSON), or an XHR object (if not JSON).
             if (console) console.log('Failed saving', xhr_or_response_data);
-            $('#status-bar').text('Failed saving. ' + xhr_or_response_data.responseText);
+
+            $button.removeClass('btn-default').addClass('btn-danger');
+            $('#status-bar').text('Failed saving. ' + xhr_or_response_data.status);
 
             if (options.fail) options.fail($item, xhr_or_response_data);
         })
@@ -171,7 +174,12 @@ function task_save(task_id, task_url) {
             ;
         },
         fail: function($item, xhr_or_response_data) {
-            $('#task-details').html(xhr_or_response_data.responseText);
+            if (xhr_or_response_data.status == 412) {
+                // TODO: implement something nice here. Just make sure we don't throw
+                // away the user's edits. It's up to the user to handle this.
+            } else {
+                $('#task-details').html(xhr_or_response_data.responseText);
+            }
         },
         type: 'task'
     });
@@ -189,7 +197,12 @@ function shot_save(shot_id, shot_url) {
             ;
         },
         fail: function($item, xhr_or_response_data) {
-            $('#task-details').html(xhr_or_response_data.responseText);
+            if (xhr_or_response_data.status == 412) {
+                // TODO: implement something nice here. Just make sure we don't throw
+                // away the user's edits. It's up to the user to handle this.
+            } else {
+                $('#task-details').html(xhr_or_response_data.responseText);
+            }
         },
         type: 'shot'
     });

attract/tasks/__init__.py

@@ -66,6 +66,7 @@ class TaskManager(object):
         api = pillar_api()
         task = pillarsdk.Node.find(task_id, api=api)
 
+        task._etag = fields.pop('_etag')
         task.name = fields.pop('name')
         task.description = fields.pop('description')
         task.properties.status = fields.pop('status')