All Kent Code Updated

app/Models/InvoiceChargeGroup.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class InvoiceChargeGroup extends Model
+{
+    protected $fillable = [
+        'invoice_id',
+        'group_name',
+        'basis_type',
+        'basis_value',
+        'rate',
+        'total_charge',
+    ];
+
+    public function invoice()
+    {
+        return $this->belongsTo(Invoice::class);
+    }
+
+    public function items()
+    {
+        return $this->hasMany(InvoiceChargeGroupItem::class, 'group_id');
+    }
+}