修复：删除种类时检查是否有商品

src/pages/category/index.vue

@@ -121,20 +121,33 @@ export default {
       }
     },
     deleteCategory(cat) {
-      uni.showModal({
-        title: '确认删除',
-        content: `确定要删除 "${cat.name}" 吗？`,
-        success: async (res) => {
-          if (res.confirm) {
-            try {
-              await productApi.deleteCategory(cat.categoryId)
-              uni.showToast({ title: '删除成功', icon: 'success' })
-              this.loadCategories()
-            } catch (e) {
-              uni.showToast({ title: '删除失败', icon: 'none' })
+      // 先检查该分类下是否有商品
+      uni.showLoading({ title: '检查中...' })
+      productApi.getProducts({ categoryId: cat.categoryId, page: 1, pageSize: 1 }).then(res => {
+        uni.hideLoading()
+        if (res.records && res.records.length > 0) {
+          uni.showToast({ title: '该分类下有商品，无法删除', icon: 'none' })
+          return
+        }
+        
+        uni.showModal({
+          title: '确认删除',
+          content: `确定要删除 "${cat.name}" 吗？`,
+          success: async (res) => {
+            if (res.confirm) {
+              try {
+                await productApi.deleteCategory(cat.categoryId)
+                uni.showToast({ title: '删除成功', icon: 'success' })
+                this.loadCategories()
+              } catch (e) {
+                uni.showToast({ title: '删除失败', icon: 'none' })
+              }
             }
           }
-        }
+        })
+      }).catch(() => {
+        uni.hideLoading()
+        uni.showToast({ title: '检查失败', icon: 'none' })
       })
     }
   }