refactor: 产品详细接口关联产品字段添加spu返回

app/admin/controller/v1/Product.php

@@ -91,8 +91,13 @@ class Product
                 'related_product_id', 
                 'sort'
             ])
-            ->productId($product->id
-            )->select();
+            ->with(['product' => function($query) {
+                $query->field(['id', 'spu']);
+            }])
+            ->productId($product->id)
+            ->select()
+            ->bindAttr('product', ['spu'])
+            ->hidden(['product']);
 
         return success('获取成功', $product);
     }

app/admin/model/v1/ProductModel.php

@@ -22,7 +22,7 @@ class ProductModel extends ProductBaseModel
     // 分类关联查询
     public function category()
     {
-        return $this->belongsTo('ProductCategoryModel', 'category_id', 'id');
+        return $this->belongsTo(ProductCategoryModel::class, 'category_id', 'id');
     }
 
     // 搜索器名称

app/admin/model/v1/ProductRelatedModel.php

@@ -11,6 +11,12 @@ use app\common\model\ProductRelatedBaseModel;
  */
 class ProductRelatedModel extends ProductRelatedBaseModel
 {
+    // 关联产品模型
+    public function product()
+    {
+        return $this->belongsTo(ProductModel::class, 'related_product_id', 'id');
+    }
+
     // 根据产品ID查询
     public function scopeProductId($query, $id)
     {