OpenSkill\Datatable\Providers\CollectionProvider::prepareForProcessing PHP Method

    public function prepareForProcessing(QueryConfiguration $queryConfiguration, array $columnConfiguration)
    {
        $this->queryConfiguration = $queryConfiguration;
        $this->columnConfiguration = $columnConfiguration;
        // generate a custom search function for each column
        foreach ($this->columnConfiguration as $col) {
            if (!array_key_exists($col->getName(), $this->columnSearchFunction)) {
                $this->columnSearchFunction[$col->getName()] = function ($data, ColumnSearch $search) use($col) {
                    if (str_contains(mb_strtolower($data[$col->getName()]), mb_strtolower($search->searchValue()))) {
                        return true;
                    }
                    return false;
                };
            }
        }
    }

 public function testDefaultOrderMulti()
 {
     $data = [['id' => 1, 'name' => 'foo'], ['id' => 2, 'name' => 'bar'], ['id' => 3, 'name' => 'foo'], ['id' => 4, 'name' => 'bar']];
     $queryConfiguration = QueryConfigurationBuilder::create()->start(0)->length(4)->drawCall(1)->columnOrder('name', 'asc')->columnOrder('id', 'desc')->build();
     $columnConfiguration = ColumnConfigurationBuilder::create()->name('id')->build();
     $columnConfiguration2 = ColumnConfigurationBuilder::create()->name('name')->build();
     $provider = new CollectionProvider(new Collection($data));
     $provider->prepareForProcessing($queryConfiguration, [$columnConfiguration, $columnConfiguration2]);
     $data = $provider->process();
     $this->assertSame(4, $data->data()->count());
     $first = $data->data()->first();
     $second = $data->data()->get(1);
     $this->assertSame(4, $first['id']);
     $this->assertSame(2, $second['id']);
 }