change transition structure 2

app/Models/ProfitConversion.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class ProfitConversion extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'user_id',
+        'rial_amount',
+        'gram_amount',
+        'unit_price',
+        'converted_at',
+        'description',
+    ];
+
+    protected $casts = [
+        'rial_amount' => 'float',
+        'gram_amount' => 'float',
+        'unit_price' => 'float',
+        'converted_at' => 'datetime',
+    ];
+}