You can install the package in to a Laravel app that uses Nova via composer:
composer require reedware/nova-text-filter
Create a new filter and extend the abstract text filter:
<?php
namespace App\Nova\Filters;
use Reedware\NovaTextFilter\TextFilter;
class MyFilter extends TextFilter
{
/**
* Apply the filter to the given query.
*
* @param \Illuminate\Http\Request $request
* @param \Illuminate\Database\Eloquent\Builder $query
* @param mixed $value
* @return \Illuminate\Database\Eloquent\Builder
*/
public function apply(Request $request, $query, $value)
{
return $query->where('my_column', 'like', "{$value}%");
}
}