gistfile1.php

<?php

# ...

$filters = [];

foreach (Input::all() as $key => $value)
{
    if ($key->startsWith("filter:") or $key->startsWith("where:"))
    {
        $filters[$key->replace("~(filter|where):~", "")] = $value->split(",");
    }
}

$this->filters = $this->filters->merge($filters);