How to customize the popup editor is covered in this code library article:
Once you put a Grid inside the custom editor template you can configure it for ajax binding.
I assume that you will also need to set the AutoBind
option of the master Grid to false and use the edit
event to perform read
by sending the master ID that is currently being edited so you can return the appropriate records.
To get the master ID that you will need to pass to the read method of the dataSource you can go like this:
masterId = $(
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