nang cap san sang import

app/Models/Contract.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+#[Fillable(['product_id', 'customer_id', 'type', 'start_date', 'end_date', 'status', 'printed_at', 'signed_status'])]
+class Contract extends Model
+{
+    public function product(): BelongsTo
+    {
+        return $this->belongsTo(Product::class);
+    }
+
+    public function customer(): BelongsTo
+    {
+        return $this->belongsTo(Customer::class);
+    }
+
+    public function feedbacks(): HasMany
+    {
+        return $this->hasMany(Feedback::class);
+    }
+}