store data into pivot table laravel 8 - php

Question

i have manytomany relation ship between categroy and product
category model
class Attribute extends Model implements Auditable
{
use HasFactory, AuditableTrait;
protected $fillable = ['category','sub_categ'];
public function products(): BelongsToMany
{
return $this->belongsToMany(Product::class);
}
}
product model
class Product extends Model implements Auditable
{
use HasFactory, AuditableTrait;
protected $table = 'products';
protected $fillable = ['name','price','description', 'details'];
public function products(): BelongsToMany
{
return $this->belongsToMany(Product::class);
}
}
the pivot table
Schema::create('attributes_products', function (Blueprint $table) {
$table->id();
$table->timestamps();
$table->foreignId('product_id')->constrained('products')->onUpdata('cascade')->onDelete('cascade');
$table->foreignId('attribute_id')->constrained('attributes')->onUpdata('cascade')->onDelete('cascade');
});
what should i do after this i did not undrestant how attach will work in pivot table and return it with the product as json response ?
edit
this is the schema i am working on
i want to give each product it's own category
and this is my product controller store function
public function store(Request $request)
{
$request->validate([
'name' => 'required',
'price' => 'required|numeric',
'description' => 'required',
'details' => 'required',
'stocks' => 'required|numeric',
//'discounts' => 'required|numeric'
]);
$product = Product::create($request->only('name','price','description', 'details'));
$product->stocks()->create([
'quantity' => $request->stocks,
'product_id' => $product->id
]);
$product->discounts()->create([
//'discount' => $request->discounts,
'product_id' => $product->id
]);
if($request->hasFile('images'))
{
foreach( $request->file('images') as $file)
{
$file->store('public/products');
$product->images()->create([
'product_id' => $product->id,
'file_path' => $file->hashName()
]);
}
}
$product->categories()->sync([
'product_id' => $product->id,
'attribute_id'=> 1
]);
}

Answer 1

In your product model check your relation.
public function categories()
{
return $this->belongsToMany(Category::class);
}
Also usually the pivot table needs to have only 2 Ids. So in your case only 2 columns: product_id & category_id.
Your table name by convention should be category_product, otherwise, you should specify it on the second parameter on the relationship.
Fix this too, you got a typo on update:
$table->foreignId('attribute_id')->constrained('attributes')->onUpdate('cascade')->onDelete('cascade');
And finally to attach:
$product = Product::find(1);
$product->categories()->attach($categoryId);
All is explained very well on documentation too: https://laravel.com/docs/8.x/eloquent-relationships