Laravel Grouping by Eloquent Relationship

问题

How can I group by relation?

Example

Sales::with('product_detail.product')->groupBy('product_name')->get()

How can I get a result with eloquent code?

回答1:

You can specify a callback function for grouping your relation like this:

Sales::with(['product_detail.product' => function($query){
        $query->groupBy('product_name');
    }])->get();

回答2:

this will help you to do grouping by relation.

$sales = Order::Sales('product')
        ->where('approved','=','Yes')
        ->groupBy('product_id')
        ->orderBy(DB::raw('COUNT(id)','desc'))
        ->get(array(DB::raw('COUNT(id) as totalsales'),'product_id'));

来源：https://stackoverflow.com/questions/36468759/laravel-grouping-by-eloquent-relationship