title: React admin custom export button - server side
body: <p>I am new to react and react admin.  I have a react admin <code>List</code> that is working nicely.  When I enable the <code>exporter</code>, it also works as expected.  What I need to do is create a custom exporter that does all the processing on the server.</p>
  <p>The main thing I'm unsure about is how I can send the current list of filters and selections to the server to do this.  Any help would be appreciated.</p>