diff --git a/app/Http/Controllers/BillingController.php b/app/Http/Controllers/BillingController.php
index 080027d..fc65492 100644
--- a/app/Http/Controllers/BillingController.php
+++ b/app/Http/Controllers/BillingController.php
@@ -65,7 +65,7 @@ class BillingController extends Controller
             $billing->updateSisa();
 
             DB::commit();
-            return redirect()->route('billing.show', $billing->IdBilling)
+            return redirect()->route('billing.index', $billing->IdBilling)
                 ->with('success', 'Billing berhasil dibuat.');
         } catch (\Exception $e) {
             DB::rollBack();
diff --git a/app/Models/Billing.php b/app/Models/Billing.php
index 5132fff..a6c856f 100644
--- a/app/Models/Billing.php
+++ b/app/Models/Billing.php
@@ -27,10 +27,18 @@ class Billing extends Model
         return $this->belongsTo(TrRegistrasi::class, 'IdRegistrasi', 'IdRegistrasi');
     }
 
+    public function transaksi()
+    {
+        return $this->hasMany(TrTransaksi::class, 'IdRegistrasi', 'IdRegistrasi');
+    }
+
     // Mendapatkan detail transaksi untuk billing ini
     public function getTransaksiDetails()
     {
-        return $this->registrasi->transaksi;
+        if ($this->registrasi) {
+            return $this->registrasi->transaksi ?? collect();
+        }
+        return collect();
     }
 
     // Menghitung total biaya dari semua transaksi
diff --git a/app/Models/TrRegistrasi.php b/app/Models/TrRegistrasi.php
index 90040b6..4045f64 100644
--- a/app/Models/TrRegistrasi.php
+++ b/app/Models/TrRegistrasi.php
@@ -2,6 +2,7 @@
 
 namespace App\Models;
 
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 
@@ -20,4 +21,19 @@ class TrRegistrasi extends Model
         'IdPegawai',
         'IdRuangPelayanan'
     ];
+
+    public function billing()
+    {
+        return $this->hasOne(Billing::class, 'IdRegistrasi', 'IdRegistrasi');
+    }
+
+    public function pasien(): BelongsTo
+    {
+        return $this->belongsTo(MsPasien::class, 'MRPasien', 'MRPasien');
+    }
+
+    public function transaksi()
+    {
+        return $this->hasMany(TrTransaksi::class, 'IdRegistrasi', 'IdRegistrasi');
+    }
 }