Polymorphic relationships - php

Question

I've got a master table called Product with the following columns:
id
product_id
product_type
name
price
in_stock
upc
Where ’id' and 'product_id' are unique (id is the PK)
I'll have other tables for different kinds of products (types).
All these other tables will have Product’s properties plus
Other properties on their own depending on the type of product
(I.e. clothing, records, etc.).
So I created a Product model using Polymorphic relationships
as follows:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Product extends Model
{
protected $fillable = [
'product_id',
'product_type',
'name',
'price',
'in_stock',
'upc'
];
public function categorizable()
{
return $this->morphTo();
}
}
And, for instance, a records model:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Record extends Model
{
protected $fillable = [
    'artist_id',
    'title',
    'label',
    'code',
    'format',
    'number_of_discs',
    'image',
    'description'
];
public function products()
{
return $this->morphMany('\App\Product', 'categorizable');
}
public function artist()
{
return $this->belongsTo(Artist::class);
}
public function track()
{
return $this->hasMany(Track::class);
}
public function getItemDetails(int $itemId): array {
}
}
Whereas the columns for record are:
id
artist_id
product_id
title
label
This is the best way I could think of relating these tables.
My questions are:
Is there a better approach to this specific problem?
In this case (using polymorphic relationships), how would I insert a product?
How could I query a product in order to return data from
Both product table and record table? I mean, not a raw query
Since that I can do, but how to perform this query using
Eloquent?

Answer 1

Your code is perfect except product_id column in Record. You don't need that column, just remove it
how would I insert a product?
$product = Product::create([
'name' => $request->name,
'price' => $request->price,
'in_stock' => $request->in_stock
]);
$record->products()->save($product);
OR
$record->products()->create([
'name' => $request->name,
'price' => $request->price,
'in_stock' => $request-> in_stock,
'product_id' => $record->id,
'product_type' => get_class($record)
]);
If you need to create both then do it like this
$record = Record::create([
'artist_id' => $request->artist_id
'title' => $request->title,
'label' => $request->label,
'code' => $request->code,
]);
$product = Product::create([
'name' => $request->name,
'price' => $request->price,
'in_stock' => $request->in_stock
]);
$record->products()->save($product);
Fetch Data
$product = Product::with('categorizable')->find(2);
$product->categorizable; //this will be either Record, Cloth... instance
Similarly for record
$record = Record::with('products')->find(1);
$record->products; //it will give you product collection
For details you can look https://laravel.com/docs/5.1/eloquent-relationships#polymorphic-relations