Xu ly giao dien San Pham

app/Models/Contract.php

@@ -30,7 +30,8 @@ class Contract extends Model
     public function customers()
     {
         return $this->belongsToMany(Customer::class, 'contract_customers')
-                    ->withPivot('role', 'transfer_order')
+                    ->using(ContractCustomer::class)
+                    ->withPivot('id', 'role', 'transfer_order')
                     ->withTimestamps();
     }
 
@@ -68,4 +69,20 @@ class Contract extends Model
     {
         return $this->hasMany(PaymentFine::class);
     }
+
+    protected static function booted()
+    {
+        static::creating(function ($contract) {
+            // Tự động lấy giá trị từ sản phẩm nếu chưa có
+            if (empty($contract->total_value) && !empty($contract->product_id)) {
+                $product = Product::find($contract->product_id);
+                if ($product) {
+                    $contract->total_value = $product->total_price;
+                }
+            }
+
+            // Tính toán số tiền còn lại
+            $contract->remaining_amount = ($contract->total_value ?? 0) - ($contract->paid_amount ?? 0);
+        });
+    }
 }

app/Models/ContractCustomer.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Concerns\HasUuids;
+use Illuminate\Database\Eloquent\Relations\Pivot;
+
+class ContractCustomer extends Pivot
+{
+    use HasUuids;
+
+    protected $table = 'contract_customers';
+
+    public $incrementing = false;
+
+    protected $keyType = 'string';
+
+    protected $guarded = [];
+}

app/Models/Customer.php

@@ -21,7 +21,8 @@ class Customer extends Model
     public function contracts()
     {
         return $this->belongsToMany(Contract::class, 'contract_customers')
-                    ->withPivot('role', 'transfer_order')
+                    ->using(ContractCustomer::class)
+                    ->withPivot('id', 'role', 'transfer_order')
                     ->withTimestamps();
     }
 }

app/Models/Project.php

@@ -11,12 +11,17 @@ class Project extends Model
     use HasUuids, HasFactory;
 
     protected $guarded = [];
-    
+
     public function products()
     {
         return $this->hasMany(Product::class);
     }
 
+    public function paymentTemplate()
+    {
+        return $this->belongsTo(PaymentTemplate::class);
+    }
+
     public function paymentTemplates()
     {
         return $this->hasMany(PaymentTemplate::class);