feat: 分类管理添加是否可跨分类购物选项

backend/internal/api/handlers/product.go

@@ -58,6 +58,7 @@ func (h *CategoryHandler) Create(c *gin.Context) {
 		MaxQuantity:        req.MaxQuantity,
 		MinWeight:          req.MinWeight,
 		MaxWeight:          req.MaxWeight,
+		AllowCrossCategory: req.AllowCrossCategory != nil && *req.AllowCrossCategory,
 		SortOrder:          req.SortOrder,
 	}
 
@@ -122,6 +123,9 @@ func (h *CategoryHandler) Update(c *gin.Context) {
 	if req.SortOrder != nil {
 		updates["sort_order"] = *req.SortOrder
 	}
+	if req.AllowCrossCategory != nil {
+		updates["allow_cross_category"] = *req.AllowCrossCategory
+	}
 
 	utils.DB.Model(&category).Updates(updates)
 	c.JSON(http.StatusOK, gin.H{"data": category})

backend/internal/models/category.go

@@ -17,6 +17,7 @@ type Category struct {
 	MaxQuantity        *int           `json:"max_quantity"`
 	MinWeight          *float64       `json:"min_weight"`
 	MaxWeight          *float64       `json:"max_weight"`
+	AllowCrossCategory bool           `gorm:"default:false" json:"allow_cross_category"`
 	SortOrder          int            `gorm:"default:0" json:"sort_order"`
 	CreatedAt          time.Time      `json:"created_at"`
 	UpdatedAt          time.Time      `json:"updated_at"`

backend/internal/schemas/product.go

@@ -10,6 +10,7 @@ type CreateCategoryRequest struct {
 	MaxQuantity        *int     `json:"max_quantity"`
 	MinWeight          *float64 `json:"min_weight"`
 	MaxWeight          *float64 `json:"max_weight"`
+	AllowCrossCategory *bool    `json:"allow_cross_category"`
 	SortOrder          int      `json:"sort_order"`
 }
 
@@ -23,6 +24,7 @@ type UpdateCategoryRequest struct {
 	MaxQuantity        *int     `json:"max_quantity"`
 	MinWeight          *float64 `json:"min_weight"`
 	MaxWeight          *float64 `json:"max_weight"`
+	AllowCrossCategory *bool    `json:"allow_cross_category"`
 	SortOrder          *int     `json:"sort_order"`
 }
 

frontend/src/views/admin/Categories.vue

@@ -14,6 +14,13 @@
             <span v-else>-</span>
           </template>
         </el-table-column>
+        <el-table-column label="跨分类购物" width="100">
+          <template #default="{ row }">
+            <el-tag :type="row.allow_cross_category ? 'success' : 'info'" size="small">
+              {{ row.allow_cross_category ? '允许' : '不允许' }}
+            </el-tag>
+          </template>
+        </el-table-column>
         <el-table-column label="操作" width="120">
           <template #default="{ row }">
             <el-button link type="primary" size="small" @click="editCat(row)">编辑</el-button>
@@ -41,6 +48,9 @@
         <el-form-item label="最大数量"><el-input-number v-model="form.max_quantity" /></el-form-item>
         <el-form-item label="最小重量"><el-input-number v-model="form.min_weight" :precision="2" /></el-form-item>
         <el-form-item label="最大重量"><el-input-number v-model="form.max_weight" :precision="2" /></el-form-item>
+        <el-form-item label="跨分类购物">
+          <el-switch v-model="form.allow_cross_category" active-text="允许" inactive-text="不允许" />
+        </el-form-item>
       </el-form>
       <template #footer>
         <el-button @click="showAdd = false">取消</el-button>
@@ -65,7 +75,7 @@ const paginatedCategories = computed(() => {
   const start = (page.value - 1) * pageSize
   return categories.value.slice(start, start + pageSize)
 })
-const form = reactive({ name: '', description: '', min_amount: undefined as number | undefined, max_amount: undefined as number | undefined, min_quantity: undefined as number | undefined, max_quantity: undefined as number | undefined, min_weight: undefined as number | undefined, max_weight: undefined as number | undefined })
+const form = reactive({ name: '', description: '', min_amount: undefined as number | undefined, max_amount: undefined as number | undefined, min_quantity: undefined as number | undefined, max_quantity: undefined as number | undefined, min_weight: undefined as number | undefined, max_weight: undefined as number | undefined, allow_cross_category: false })
 
 function handlePageChange() {
   window.scrollTo({ top: 0, behavior: 'smooth' })
@@ -78,13 +88,13 @@ async function fetchCategories() {
 
 function openAdd() {
   editing.value = null
-  Object.assign(form, { name: '', description: '', min_amount: undefined, max_amount: undefined, min_quantity: undefined, max_quantity: undefined, min_weight: undefined, max_weight: undefined })
+  Object.assign(form, { name: '', description: '', min_amount: undefined, max_amount: undefined, min_quantity: undefined, max_quantity: undefined, min_weight: undefined, max_weight: undefined, allow_cross_category: false })
   showAdd.value = true
 }
 
 function editCat(row: any) {
   editing.value = row
-  Object.assign(form, { name: row.name, description: row.description || '', min_amount: row.min_amount, max_amount: row.max_amount, min_quantity: row.min_quantity, max_quantity: row.max_quantity, min_weight: row.min_weight, max_weight: row.max_weight })
+  Object.assign(form, { name: row.name, description: row.description || '', min_amount: row.min_amount, max_amount: row.max_amount, min_quantity: row.min_quantity, max_quantity: row.max_quantity, min_weight: row.min_weight, max_weight: row.max_weight, allow_cross_category: row.allow_cross_category || false })
   showAdd.value = true
 }