Laravel request（）-> ajax（）在浏览器后退按钮上触发

Question

Inside my controller I have this function for the route /backups

public function index()
{
    $backups = \App\Backup::all();

    if(request()->ajax()) {
        return $backups;
    }

    return view('backups.index', compact('backups'));
}

My idea was that if I have my javascript ask for the data then return json if not return html .

This works fine, except when pressing the browser back button to go from lets say /backups/1 to /backups it shows the json .

Is there another function I can use that will only respond to ajax calls from my code and not the browsers?

Answer 1

Make sure your AJAX requests use a different URL from the full HTML documents. Chrome (and most probably Firefox) caches the most recent request even if it is just a partial.

Source:

https://code.google.com/p/chromium/issues/detail?id=108425

Or:

Try setting cache to false

$.ajax({
    dataType: "json",
    url: url,
    cache: false,
    success: function (data) {...}
});

Answer 2

I'd recommend adding an ajax-only query string parameter to the ajax request, eg ?ajax=1 .

This way, you can 1. utilise the browser cache, and 2. keep the same Laravel route for both request types.