继续完善购物逻辑闭环，consumer模块完成度75%

pages/mall/consumer/product-detail.uvue

@@ -326,9 +326,27 @@ export default {
         return
       }
       
+      const sku = this.productSkus.find(s => s.id === this.selectedSkuId)
+      
+      const selectedItem = {
+          id: this.selectedSkuId,
+          product_id: this.product.id,
+          sku_id: this.selectedSkuId,
+          product_name: this.product.name,
+          product_image: (sku && sku.image_url) ? sku.image_url : this.product.images[0],
+          sku_specifications: sku ? sku.specifications : {},
+          price: sku ? sku.price : this.product.price,
+          quantity: this.quantity
+      }
+
       // 跳转到订单确认页
       uni.navigateTo({
-        url: `/pages/mall/consumer/order-confirm?productId=${this.product.id}&skuId=${this.selectedSkuId}&quantity=${this.quantity}`
+        url: '/pages/mall/consumer/checkout',
+        success: (res) => {
+            res.eventChannel.emit('acceptData', {
+                selectedItems: [selectedItem]
+            })
+        }
       })
     },