Add products module #46

app/Models/Unit.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Unit extends Model
+{
+    use HasFactory;
+
+    protected $fillable = ['name', 'symbol'];
+
+    public function products()
+    {
+        return $this->hasMany(Product::class);
+    }
+
+    public function lineItems()
+    {
+        return $this->hasMany(LineItem::class);
+    }
+}