Just like the example at that link, I want my users to be able to edit the value of the “customer” field using a dropdownlist type column editor.
I created a proof of concept at the following location: https://jsfiddle.net/damerval/kt4usw6y/22/
Could you clarify it?
I would like to suggest you look at this demo.
You could use this approach with createeditor callback to set the wanted source for the jqxDropDownList in the edited grid.
What is your final goal if the suggestion does not help you?