Laravel - 在数据透视表中创建其他列是一个好习惯吗？

Question

So, i have a project on which the client can order food. The products are stored in a cart and then are inserted in a database. I want to design the Orders and Products tables but i also want to store the quantity and the subtotal price for each product.Orders and Products have N:N relation. Here are my table migrations:

Schema::create('orders', function (Blueprint $table) {
            $table->increments('id');
            $table->integer('user_id');
            $table->integer('product_id');
            $table->enum('status',['open','closed']);
            $table->timestamps();
        });

Schema::create('products', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');
            $table->string('description')->nullable();
            $table->float('price',8,2);
            $table->string('image_path');
            $table->timestamps();
        });

The pivot table:

Schema::create('order_product', function (Blueprint $table) {
            $table->integer('order_id')->unsigned()->nullable();
            $table->foreign('order_id')->references('id')->on('orders')->onDelete('cascade');
            $table->integer('product_id')->unsigned()->nullable();
            $table->foreign('product_id')->references('id')->on('products')->onDelete('cascade');
            $table->timestamps();
        });

The ways I see the solution are:

1. add the quantity and subtotal attributes to the pivot table( which i am not sure if it is good or bad)
2. insert rows for each of the specific product quantity (which will create a lot of rows for the same order and i'm not sure if this is good too).

Can you point me to a better solution? I am new to web development.