'I want to access the products with total amount

I have 2 tables. One is product(id, name). another is In(id, amount, products_id). I am trying to get product name with total amount. Example: Aerobat-34 God of war-3 Rs537-15

I Joined the tables. Now output is

[{"name":"Aerobat","amount":"10"},{"name":"Aerobat","amount":null},{"name":"Aerobat","amount":null},{"name":"Aerobat","amount":null},{"name":"Aerobat","amount":"2"},{"name":"Aerobat","amount":"56"},{"name":"Aerobat","amount":"56"},{"name":"god of war","amount":"7"},{"name":"god of war","amount":"23"},{"name":"Rs537","amount":null},{"name":"Rs537","amount":null},{"name":"Rs537","amount":null}]

public function index()
    {
        $product = DB::table('Products')
            ->join('ins', 'products.id', '=', 'ins.products_id')
            ->select('Products.name', 'ins.amount')
            ->get();
        echo $product;
    }

How to find the expected result?

phplaraveljoineloquent-relationship


Solution 1:[1]

you could get it like this

    public function index()
    {
        $product = DB::table('Products')
            ->join('ins', 'products.id', '=', 'ins.products_id')
            ->select('Products.name', 'ins.amount',DB::raw('sum(ins.amount) as total'))
            ->get();
        echo $product;
    }

Solution 2:[2]

Try this

public function index()
{
    $product = DB::table('products')
        ->join('ins', 'products.id', '=', 'ins.products_id')
        ->select('products.name', DB::raw('sum(ins.amount) as total_amount'))
        ->groupBy('ins.products_id')
        ->get();

    echo $product;
}

Solution 3:[3]

you should use Model relations first, create a function in the Product model that is called ins()

public function ins()
{
    return $this->hasMany('App\Models\Ins', 'product_id');
}

and also you can declare a virtual column for product that executes the total amount of this product. Notice, you should set name with "get" as prefix and "Attribute" as postfix

public function getTotalAmountAttribute()
{
    $totalAmount=0;
    foreach($this->ins as $item){
         $totalAmount+=$item->amount??0
    }
    return $totalAmount;
}

and finally, you can use both fields like name & total amount

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 eraufi
Solution 2 ruleboy21
Solution 3 ali katiraie

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