setPrimaryKey('id'); } public function columns(): array { return [ Column::make("Dozent", "lecturer.name") ->sortable(), Column::make("Name", "name") ->sortable(), Column::make("Termine") ->label( fn($row, Column $column) => ''.$row->events_count.'' ) ->html() ->sortable(), Column::make("Erstellt am", "created_at") ->sortable(), Column::make('') ->label( fn($row, Column $column) => view('columns.courses.action')->withRow($row) ), ]; } public function builder(): Builder { return Course::query() ->withCount([ 'events', ]) ->whereHas('events.venue.city.country', fn($query) => $query->where('countries.code', $this->country)); } }