Method for sorting filament table that uses scout

[bensondevs]

Problem

When using filament table sortable() it is forced that we need to use the Eloquent Builder and we cannot use the Scout Builder as the query parameter. This causes the sorting is always using the model's database table column based sorting, meanwhile sometimes we have custom table column value that's only being stored in the index table (Meilisearch, Algolia, etc)

Solution

The created method of scoutQuerySorting will resolve the issue and make the sorting using the custom column that only exists in the index table column.

Example of Usage

TextColumn::make('custom_calculation_column')
                ->state(fn (Model $model) => $event->getSomeCalculationFromIndex())
                ->sortable(query: fn (
                    Builder $query,
                    string $direction,
                ): Builder => $this->scoutQuerySorting(
                    'custom_calculation_column',
                    $query,
                    $direction,
                ))
                ->toggleable(),