I have the issue with syncing the chart Bar. The problem is I cant sync data to my chartBar using 2 urls from external sql data base: task_data & users_data. Only one of two is working. How to solve it?
if you want to really sync (means reflect any change in collections) then you need to build some adapter for that.
but if you want to just combine data from multiple collections then you can serialize their data and build single array and then parse it into chart.