looking for the options to implement the subj with requirements specified below.
Let’s say we’ve a table where some fields can be edited, the each record represent the model of certain collection, and there is only one “Update” button below, when clicked it should push updated records to the server, i.e. model.save or collection.invoke(‘save’). Additionally I need a way to inform the user with a single message when all records are persisted or some are failed.
Currently the view portion is implemented within marionette’s composite and item views, “Update” button, located in composite view, triggers an event, then in controller we’ve a loop for child views:
listSubmit: -> promises =  @listView.children.each (view) => data = Backbone.Syphon.serialize view promises.push @processListSubmit(data, view.model) @checkStatus promises processListSubmit: (data, model) -> promise = $.Deferred() # set events @listenTo model, 'sync', promise.resolve @listenTo model, 'error', promise.reject # persisting new data model.save data # return promise promise checkStatus: (promises) -> $.when(promises...) .done -> # TODO: trigger app event instead alert('Variants were saved successfully') .fail -> # TODO: trigger app event instead alert('There was an error saving variants')
Thanks in advance.