Forwarding Laravel Nova GET parameters to filters/cards/metrics/etc.

forward-params.js

// All parameter keys defined here will be forwarded to all subsequent requests on this page.
let forward_params = [
    'market_id',
];

function get(name){
    // Credit https://stackoverflow.com/a/831060/1451408
    if(name=(new RegExp('[?&]'+encodeURIComponent(name)+'=([^&]*)')).exec(location.search)) {
        return decodeURIComponent(name[1]);
    }
}

forward_params.forEach((param) => {
    if(param) {
        axios.defaults.params = {[param]: get(param)};
    }
});

NovaServiceProvider.php

class NovaServiceProvider extends NovaApplicationServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        parent::boot();
        Nova::script('forward-params', public_path('js/forward-params.js'));
    }
    
    //...etc
}