Changing resources prop does not update in render

When the resources prop is changed, the calendar does not rerender. This is inconsistent with the way that the React flow works.

For example, if an async request is working in the background and it finishes, with a new resources array, and the render() function of the parent component is called, the calendar is not rerendered.

While the docs mention a resources function for use with ajax, this does not work with my workflow (because the information is stored in redux and used with other components), and does not align with proper React flow.

[mostlyfabulous]

@joshuaRuff I cannot post an example with codepen, jsfiddle, etc. due to the webpack requirements for FullCalendar with React. However, it is quite simple to reproduce. Render a calendar with a preset resources, then after some time, update that resources array (ex. with a button onClick). The despite the resources being changed in state the calendar will not render to reflect the updated state.

You could fork the example react fullcalendar example here https://codesandbox.io/s/2z6wp2jozn) to reproduce the issue?

[ziaulrehman40]

~~In my case it is actually throwing error https://github.com/fullcalendar/fullcalendar-scheduler/issues/527#issuecomment-639452902~~

When resources change from empty array to something else(useeffect fetches data and populates)

UPDATE: NVM, our old code had logical bug which was passing null resources instead of [] in one case, and next time resources were sent it started throwing this error. Fixed by passing [] if no resources.