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Live UI update of model changes when the model contains only simple data structures

Consult me ​​with your views on the following topic:

I have a model - a structure of objects. For example:

  • Event containing participants

  • Current task

  • Purpose of each task

The model will be marinated on the server and transmitted over the network to the client graphics application. Because of the pickle, I would like to keep the model classes as simple as possible (i.e. Just simple classes with only data fields, no method inside). As a result, I cannot generate signals (such as OnUpdate) for model objects.

Sometimes the server sends model updates. Such as "The text of the problem has changed." When an update is applied, I need it to be reflected in the UI. If you change the text of the task, this should be a change to the label in the user interface. I would like to have only related controls changed, so updating the entire UI is not the best solution.

On the other hand, I would not like to move the entire model in search of changes - it would be too resource intensive.

So what's the best example of notifying the UI of changes to simple data structures?

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2 answers


You may be working under the wrong concept: pickles do not include code from classes that are pickled. You can add methods to your data structures and not increase the size of your pickles.



This is a common misunderstanding about pickles. They don't include code.

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You can add a flag for example. self.isOnClientSide, and check it in each update handler so you can use different logic anyway.

def onUpdateFoo(self):
  if self.isOnClientSide:
    return self.onUpdateFooOnClient()
  else:
    return self.onUpdateFooOnServer()


Change this checkbox accordingly immediately after untangling.

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