fix: binding merchant and employee at admin site

printing/serializers.py

@@ -57,3 +57,68 @@ class PrintingOrderCreateUpdateSerializer(serializers.ModelSerializer):
         if not value:
             raise serializers.ValidationError("客户不能为空")
         return value
+
+
+class PrintingJobListSerializer(serializers.ModelSerializer):
+    """印染款式明细列表序列化器"""
+    printing_order_id = serializers.CharField(source='printing_order.human_id', read_only=True)
+    product_name = serializers.CharField(source='product.name', read_only=True)
+    
+    class Meta:
+        model = models.PrintingJob
+        fields = [
+            'id', 'printing_order', 'printing_order_id', 'product', 'product_name',
+            'quantity', 'unit', 'size', 'pieces', 'description',
+            'created_at', 'updated_at'
+        ]
+        read_only_fields = ['id', 'created_at', 'updated_at']
+
+
+class PrintingJobDetailSerializer(serializers.ModelSerializer):
+    """印染款式明细详情序列化器"""
+    printing_order_id = serializers.CharField(source='printing_order.human_id', read_only=True)
+    product_name = serializers.CharField(source='product.name', read_only=True)
+    product_code = serializers.CharField(source='product.human_id', read_only=True)
+    
+    class Meta:
+        model = models.PrintingJob
+        fields = [
+            'id', 'printing_order', 'printing_order_id', 'product', 'product_name', 'product_code',
+            'quantity', 'unit', 'size', 'pieces', 'description',
+            'created_at', 'updated_at'
+        ]
+        read_only_fields = ['id', 'created_at', 'updated_at']
+
+
+class PrintingJobCreateUpdateSerializer(serializers.ModelSerializer):
+    """印染款式明细创建/更新序列化器"""
+    
+    class Meta:
+        model = models.PrintingJob
+        fields = [
+            'printing_order', 'product', 'quantity', 'unit', 'size', 'pieces', 'description'
+        ]
+    
+    def validate_printing_order(self, value):
+        """验证印染订单是否存在"""
+        if not value:
+            raise serializers.ValidationError("印染订单不能为空")
+        return value
+    
+    def validate_product(self, value):
+        """验证产品是否存在"""
+        if not value:
+            raise serializers.ValidationError("产品不能为空")
+        return value
+    
+    def validate_quantity(self, value):
+        """验证数量"""
+        if value <= 0:
+            raise serializers.ValidationError("数量必须大于0")
+        return value
+    
+    def validate_pieces(self, value):
+        """验证件数"""
+        if value <= 0:
+            raise serializers.ValidationError("件数必须大于0")
+        return value