I'm trying to update Model which has two primary keys.
Model
namespace App;
use Illuminate\Database\Eloquent\Model;
class Inventory extends Model
{
/**
* The table associated with the model.
*/
protected $table = 'inventories';
/**
* Indicates model primary keys.
*/
protected $primaryKey = ['user_id', 'stock_id'];
...
Migration
Schema::create('inventories', function (Blueprint $table) {
$table->integer('user_id')->unsigned();
$table->integer('stock_id')->unsigned();
$table->bigInteger('quantity');
$table->primary(['user_id', 'stock_id']);
$table->foreign('user_id')->references('id')->on('users')
->onUpdate('restrict')
->onDelete('cascade');
$table->foreign('stock_id')->references('id')->on('stocks')
->onUpdate('restrict')
->onDelete('cascade');
});
This is code which should update Inventory model, but it doesn't.
$inventory = Inventory::where('user_id', $user->id)->where('stock_id', $order->stock->id)->first();
$inventory->quantity += $order->quantity;
$inventory->save();
I get this error:
Illegal offset type
I also tried to use updateOrCreate() method. It doesn't work (I get same error).
Can anyone tell how Model with two primary key should be updated?
via Chebli Mohamed
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