Save Many-To-Many Relationship in Laravel 6 - laravel

Question

i have two table Product and Order that Many-To-Many to each other. so, i created one other Table Middle of them order_table.
I try to save relationship many-to-many, but i got error unit_price doesnt have a default value.
in Product Model
protected $fillable = [
'name', 'price', 'description', 'status'
];
public function orders()
{
return $this->belongsToMany(\App\Order::class);
}
in Order Model
protected $fillable = [
'description', 'ref_no', 'customer_id', 'description', 'active'
];
public function products()
{
return $this->belongsTo(\App\Product::class);
}
And in Order_Product Schema
Schema::create('order_product', function (Blueprint $table) {
$table->bigIncrements('id');
$table->unsignedBigInteger('order_id');
$table->unsignedBigInteger('product_id');
$table->double('unit_price');
$table->integer('quantity')->default(1);
$table->timestamps();
$table->foreign('order_id')->references('id')->on('orders')->onDelete('cascade');
$table->foreign('product_id')->references('id')->on('products')->onDelete('cascade');
});
In ProductController
public function create(Request $request)
{
$request->validate([
'name' => 'required',
'price' => 'required',
'description' => 'nullable',
]);
$product = new Product();
$product->name = $request->input('name');
$product->price = $request->input('price');
$product->status = $request->input('status');
$product->description = $request->input('description');
$product->save();
$orders = new \App\Order();
$orders->unit_price = $request->unit_price;
$product->orders()->attach($orders);
return response()->json(['created' => true]);
}
I'll appreciate of all ur help.... Thanks....

Answer 1

Validate the Data to insure it exists.
$data = $this->validate($request, [
'unit_price' => 'required|numeric'
]);
$data['unit_price'];
Use the get method and specify a fallback
$product->orders()->attach($order, [
'unit_price' => $request->get('unit_price', 0)
]);
Fill the pivot using "only" for ease of use once you have it worked out:
$product->orders()->attach(
$order, $request->only(['unit_price'])
);

Answer 2

I got error unit_price doesn't have a default value.
This is a Database issue. Please set a default value for unit_price column.