How do I handle the call back using multiple Google File Picker

Question

If I have multiple Google Drive File Pickers on one page how do I handle the callback to ensure the data is passed to the correct section?

I basically have a number of items listed, each Item has a select a file button linked to the file picker. All the examples just pass the data back to the same place but I need this to be different for each request.

I'm basically have the same code that is included in the docs:

https://developers.google.com/apps-script/guides/dialogs#file-open_dialogs

How can I do this?

Answer 1

As Eric said use the setCallback method.

If you want to pass a parameter to a callback use an anonymous function:

.setCallback(function(data){pickerCallback(data,"MYPICKERID")})

Answer 2

You can change the callback function that the picker uses with this line:

.setCallback(pickerCallback)

Use a different callback for each picker, or even use an anonymous function.