feat: 添加购买分组功能，替代跨分类购物选项

backend/internal/api/handlers/product.go

@@ -49,17 +49,17 @@ func (h *CategoryHandler) Create(c *gin.Context) {
 	}
 
 	category := models.Category{
-		Name:               req.Name,
-		Description:        req.Description,
-		ParentID:           req.ParentID,
-		MinAmount:          req.MinAmount,
-		MaxAmount:          req.MaxAmount,
-		MinQuantity:        req.MinQuantity,
-		MaxQuantity:        req.MaxQuantity,
-		MinWeight:          req.MinWeight,
-		MaxWeight:          req.MaxWeight,
-		AllowCrossCategory: req.AllowCrossCategory != nil && *req.AllowCrossCategory,
-		SortOrder:          req.SortOrder,
+		Name:             req.Name,
+		Description:      req.Description,
+		ParentID:         req.ParentID,
+		PurchaseGroupID:  req.PurchaseGroupID,
+		MinAmount:        req.MinAmount,
+		MaxAmount:        req.MaxAmount,
+		MinQuantity:      req.MinQuantity,
+		MaxQuantity:      req.MaxQuantity,
+		MinWeight:        req.MinWeight,
+		MaxWeight:        req.MaxWeight,
+		SortOrder:        req.SortOrder,
 	}
 
 	if err := utils.DB.Create(&category).Error; err != nil {
@@ -123,8 +123,8 @@ 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
+	if req.PurchaseGroupID != nil {
+		updates["purchase_group_id"] = *req.PurchaseGroupID
 	}
 
 	utils.DB.Model(&category).Updates(updates)

backend/internal/api/handlers/purchase_group.go

@@ -0,0 +1,105 @@
+package handlers
+
+import (
+	"net/http"
+	"strconv"
+
+	"sale/internal/models"
+	"sale/internal/schemas"
+	"sale/internal/utils"
+
+	"github.com/gin-gonic/gin"
+)
+
+type PurchaseGroupHandler struct{}
+
+func NewPurchaseGroupHandler() *PurchaseGroupHandler {
+	return &PurchaseGroupHandler{}
+}
+
+func (h *PurchaseGroupHandler) List(c *gin.Context) {
+	var groups []models.PurchaseGroup
+	utils.DB.Order("sort_order ASC, id ASC").Preload("Categories").Find(&groups)
+	c.JSON(http.StatusOK, gin.H{"data": groups})
+}
+
+func (h *PurchaseGroupHandler) Create(c *gin.Context) {
+	var req schemas.CreatePurchaseGroupRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	var existing models.PurchaseGroup
+	if err := utils.DB.Where("name = ?", req.Name).First(&existing).Error; err == nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "分组名称已存在"})
+		return
+	}
+
+	group := models.PurchaseGroup{
+		Name:        req.Name,
+		Description: req.Description,
+		SortOrder:   req.SortOrder,
+	}
+
+	if err := utils.DB.Create(&group).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to create purchase group"})
+		return
+	}
+
+	c.JSON(http.StatusCreated, gin.H{"data": group})
+}
+
+func (h *PurchaseGroupHandler) Update(c *gin.Context) {
+	id, _ := strconv.Atoi(c.Param("id"))
+	var group models.PurchaseGroup
+	if err := utils.DB.First(&group, id).Error; err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "Purchase group not found"})
+		return
+	}
+
+	var req schemas.UpdatePurchaseGroupRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	if req.Name != nil && *req.Name != group.Name {
+		var existing models.PurchaseGroup
+		if err := utils.DB.Where("name = ? AND id != ?", *req.Name, id).First(&existing).Error; err == nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "分组名称已存在"})
+			return
+		}
+	}
+
+	updates := make(map[string]interface{})
+	if req.Name != nil {
+		updates["name"] = *req.Name
+	}
+	if req.Description != nil {
+		updates["description"] = *req.Description
+	}
+	if req.SortOrder != nil {
+		updates["sort_order"] = *req.SortOrder
+	}
+
+	utils.DB.Model(&group).Updates(updates)
+	c.JSON(http.StatusOK, gin.H{"data": group})
+}
+
+func (h *PurchaseGroupHandler) Delete(c *gin.Context) {
+	id, _ := strconv.Atoi(c.Param("id"))
+
+	var categoryCount int64
+	utils.DB.Model(&models.Category{}).Where("purchase_group_id = ?", id).Count(&categoryCount)
+	if categoryCount > 0 {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "该分组下有分类，无法删除"})
+		return
+	}
+
+	if err := utils.DB.Delete(&models.PurchaseGroup{}, id).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to delete purchase group"})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"message": "Purchase group deleted successfully"})
+}

backend/internal/api/routes/routes.go

@@ -26,6 +26,7 @@ func SetupRoutes(r *gin.Engine) {
 	paymentChannelHandler := handlers.NewPaymentChannelHandler()
 	paymentHandler := handlers.NewPaymentHandler()
 	logHandler := handlers.NewLogHandler()
+	purchaseGroupHandler := handlers.NewPurchaseGroupHandler()
 
 	r.Use(middlewares.CORSMiddleware())
 
@@ -154,6 +155,14 @@ func SetupRoutes(r *gin.Engine) {
 					adminCategories.DELETE("/:id", categoryHandler.Delete)
 				}
 
+				adminPurchaseGroups := admin.Group("/purchase-groups")
+				{
+					adminPurchaseGroups.GET("", purchaseGroupHandler.List)
+					adminPurchaseGroups.POST("", purchaseGroupHandler.Create)
+					adminPurchaseGroups.PUT("/:id", purchaseGroupHandler.Update)
+					adminPurchaseGroups.DELETE("/:id", purchaseGroupHandler.Delete)
+				}
+
 				adminBrands := admin.Group("/brands")
 				{
 					adminBrands.GET("", brandHandler.List)

backend/internal/models/category.go

@@ -7,23 +7,24 @@ import (
 )
 
 type Category struct {
-	ID                 uint           `gorm:"primaryKey" json:"id"`
-	Name               string         `gorm:"size:100;not null;uniqueIndex" json:"name"`
-	Description        string         `json:"description"`
-	ParentID           *uint          `json:"parent_id"`
-	MinAmount          *float64       `json:"min_amount"`
-	MaxAmount          *float64       `json:"max_amount"`
-	MinQuantity        *int           `json:"min_quantity"`
-	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"`
-	DeletedAt          gorm.DeletedAt `gorm:"index" json:"-"`
-	ProductCount       int64          `gorm:"-" json:"product_count"`
-	Children           []Category     `gorm:"foreignKey:ParentID" json:"children,omitempty"`
+	ID               uint           `gorm:"primaryKey" json:"id"`
+	Name             string         `gorm:"size:100;not null;uniqueIndex" json:"name"`
+	Description      string         `json:"description"`
+	ParentID         *uint          `json:"parent_id"`
+	PurchaseGroupID  *uint          `json:"purchase_group_id"`
+	PurchaseGroup    *PurchaseGroup `gorm:"foreignKey:PurchaseGroupID" json:"purchase_group,omitempty"`
+	MinAmount        *float64       `json:"min_amount"`
+	MaxAmount        *float64       `json:"max_amount"`
+	MinQuantity      *int           `json:"min_quantity"`
+	MaxQuantity      *int           `json:"max_quantity"`
+	MinWeight        *float64       `json:"min_weight"`
+	MaxWeight        *float64       `json:"max_weight"`
+	SortOrder        int            `gorm:"default:0" json:"sort_order"`
+	CreatedAt        time.Time      `json:"created_at"`
+	UpdatedAt        time.Time      `json:"updated_at"`
+	DeletedAt        gorm.DeletedAt `gorm:"index" json:"-"`
+	ProductCount     int64          `gorm:"-" json:"product_count"`
+	Children         []Category     `gorm:"foreignKey:ParentID" json:"children,omitempty"`
 }
 
 func (Category) TableName() string {

backend/internal/models/purchase_group.go

@@ -0,0 +1,22 @@
+package models
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+type PurchaseGroup struct {
+	ID          uint           `gorm:"primaryKey" json:"id"`
+	Name        string         `gorm:"size:100;not null;uniqueIndex" json:"name"`
+	Description string         `json:"description"`
+	SortOrder   int            `gorm:"default:0" json:"sort_order"`
+	CreatedAt   time.Time      `json:"created_at"`
+	UpdatedAt   time.Time      `json:"updated_at"`
+	DeletedAt   gorm.DeletedAt `gorm:"index" json:"-"`
+	Categories  []Category     `gorm:"foreignKey:PurchaseGroupID" json:"categories,omitempty"`
+}
+
+func (PurchaseGroup) TableName() string {
+	return "purchase_groups"
+}

backend/internal/schemas/product.go

@@ -1,31 +1,43 @@
 package schemas
 
 type CreateCategoryRequest struct {
-	Name               string   `json:"name" binding:"required"`
-	Description        string   `json:"description"`
-	ParentID           *uint    `json:"parent_id"`
-	MinAmount          *float64 `json:"min_amount"`
-	MaxAmount          *float64 `json:"max_amount"`
-	MinQuantity        *int     `json:"min_quantity"`
-	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"`
+	Name              string   `json:"name" binding:"required"`
+	Description       string   `json:"description"`
+	ParentID          *uint    `json:"parent_id"`
+	PurchaseGroupID   *uint    `json:"purchase_group_id"`
+	MinAmount         *float64 `json:"min_amount"`
+	MaxAmount         *float64 `json:"max_amount"`
+	MinQuantity       *int     `json:"min_quantity"`
+	MaxQuantity       *int     `json:"max_quantity"`
+	MinWeight         *float64 `json:"min_weight"`
+	MaxWeight         *float64 `json:"max_weight"`
+	SortOrder         int      `json:"sort_order"`
 }
 
 type UpdateCategoryRequest struct {
-	Name               *string  `json:"name"`
-	Description        *string  `json:"description"`
-	ParentID           *uint    `json:"parent_id"`
-	MinAmount          *float64 `json:"min_amount"`
-	MaxAmount          *float64 `json:"max_amount"`
-	MinQuantity        *int     `json:"min_quantity"`
-	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"`
+	Name            *string  `json:"name"`
+	Description     *string  `json:"description"`
+	ParentID        *uint    `json:"parent_id"`
+	PurchaseGroupID *uint    `json:"purchase_group_id"`
+	MinAmount       *float64 `json:"min_amount"`
+	MaxAmount       *float64 `json:"max_amount"`
+	MinQuantity     *int     `json:"min_quantity"`
+	MaxQuantity     *int     `json:"max_quantity"`
+	MinWeight       *float64 `json:"min_weight"`
+	MaxWeight       *float64 `json:"max_weight"`
+	SortOrder       *int     `json:"sort_order"`
+}
+
+type CreatePurchaseGroupRequest struct {
+	Name        string `json:"name" binding:"required"`
+	Description string `json:"description"`
+	SortOrder   int    `json:"sort_order"`
+}
+
+type UpdatePurchaseGroupRequest struct {
+	Name        *string `json:"name"`
+	Description *string `json:"description"`
+	SortOrder   *int    `json:"sort_order"`
 }
 
 type CreateProductRequest struct {

backend/internal/utils/database.go

@@ -63,6 +63,7 @@ func AutoMigrate() {
 	err := DB.AutoMigrate(
 		&models.User{},
 		&models.Category{},
+		&models.PurchaseGroup{},
 		&models.Brand{},
 		&models.Product{},
 		&models.ProductCustomField{},

frontend/src/api/index.ts

@@ -124,6 +124,11 @@ export const adminApi = {
   updateCategory: (id: number, data: any) => api.put(`/admin/categories/${id}`, data),
   deleteCategory: (id: number) => api.delete(`/admin/categories/${id}`),
 
+  getPurchaseGroups: () => api.get('/admin/purchase-groups'),
+  createPurchaseGroup: (data: any) => api.post('/admin/purchase-groups', data),
+  updatePurchaseGroup: (id: number, data: any) => api.put(`/admin/purchase-groups/${id}`, data),
+  deletePurchaseGroup: (id: number) => api.delete(`/admin/purchase-groups/${id}`),
+
   getBrands: () => api.get('/admin/brands'),
   createBrand: (data: any) => api.post('/admin/brands', data),
   updateBrand: (id: number, data: any) => api.put(`/admin/brands/${id}`, data),

frontend/src/layouts/AdminLayout.vue

@@ -25,6 +25,10 @@
           <el-icon><Folder /></el-icon>
           <span class="nav-text">{{ $t('admin.categoryManagement') }}</span>
         </router-link>
+        <router-link to="/admin/purchase-groups" class="nav-link">
+          <el-icon><Grid /></el-icon>
+          <span class="nav-text">购买分组</span>
+        </router-link>
         <router-link to="/admin/brands" class="nav-link">
           <el-icon><Stamp /></el-icon>
           <span class="nav-text">{{ $t('admin.brandManagement') }}</span>
@@ -164,7 +168,7 @@
 import { ref, computed } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
 import { useI18n } from 'vue-i18n'
-import { DataAnalysis, User, Folder, Stamp, Goods, List, Van, Trophy, ChatDotSquare, Setting, Document, Picture, Compass, Fold, Expand, HomeFilled, FullScreen, ArrowDown, SwitchButton, ArrowRight, Wallet, Notebook } from '@element-plus/icons-vue'
+import { DataAnalysis, User, Folder, Grid, Stamp, Goods, List, Van, Trophy, ChatDotSquare, Setting, Document, Picture, Compass, Fold, Expand, HomeFilled, FullScreen, ArrowDown, SwitchButton, ArrowRight, Wallet, Notebook } from '@element-plus/icons-vue'
 import { useUserStore } from '../store/user'
 import { useCartStore } from '../store/cart'
 
@@ -182,6 +186,7 @@ const pageTitles: Record<string, string> = {
   '/admin': '控制台',
   '/admin/users': '用户管理',
   '/admin/categories': '分类管理',
+  '/admin/purchase-groups': '购买分组',
   '/admin/brands': '品牌管理',
   '/admin/products': '商品管理',
   '/admin/orders': '订单管理',

frontend/src/router/index.ts

@@ -41,6 +41,7 @@ const routes = [
       { path: '', name: 'AdminDashboard', component: () => import('../views/admin/Dashboard.vue') },
       { path: 'users', name: 'AdminUsers', component: () => import('../views/admin/Users.vue') },
       { path: 'categories', name: 'AdminCategories', component: () => import('../views/admin/Categories.vue') },
+      { path: 'purchase-groups', name: 'AdminPurchaseGroups', component: () => import('../views/admin/PurchaseGroups.vue') },
       { path: 'brands', name: 'AdminBrands', component: () => import('../views/admin/Brands.vue') },
       { path: 'products', name: 'AdminProducts', component: () => import('../views/admin/Products.vue') },
       { path: 'orders', name: 'AdminOrders', component: () => import('../views/admin/Orders.vue') },

frontend/src/views/admin/Categories.vue

@@ -8,19 +8,18 @@
         <el-table-column prop="id" label="ID" width="80" />
         <el-table-column prop="name" label="分类名称" />
         <el-table-column prop="description" label="描述" />
+        <el-table-column label="购买分组" width="120">
+          <template #default="{ row }">
+            <el-tag v-if="row.purchase_group" size="small">{{ row.purchase_group.name }}</el-tag>
+            <span v-else>-</span>
+          </template>
+        </el-table-column>
         <el-table-column label="金额限制" width="200">
           <template #default="{ row }">
             <span v-if="row.min_amount || row.max_amount">¥{{ row.min_amount || 0 }}~{{ row.max_amount || '∞' }}</span>
             <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>
@@ -42,15 +41,17 @@
       <el-form :model="form" label-width="100px">
         <el-form-item label="名称"><el-input v-model="form.name" /></el-form-item>
         <el-form-item label="描述"><el-input v-model="form.description" type="textarea" /></el-form-item>
+        <el-form-item label="购买分组">
+          <el-select v-model="form.purchase_group_id" placeholder="请选择购买分组" clearable style="width: 100%">
+            <el-option v-for="group in purchaseGroups" :key="group.id" :label="group.name" :value="group.id" />
+          </el-select>
+        </el-form-item>
         <el-form-item label="最小金额"><el-input-number v-model="form.min_amount" :precision="2" /></el-form-item>
         <el-form-item label="最大金额"><el-input-number v-model="form.max_amount" :precision="2" /></el-form-item>
         <el-form-item label="最小数量"><el-input-number v-model="form.min_quantity" /></el-form-item>
         <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>
@@ -66,6 +67,7 @@ import { ElMessage, ElMessageBox } from 'element-plus'
 import { adminApi, categoryApi } from '../../api'
 
 const categories = ref<any[]>([])
+const purchaseGroups = ref<any[]>([])
 const showAdd = ref(false)
 const editing = ref<any>(null)
 const page = ref(1)
@@ -75,7 +77,7 @@ 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, allow_cross_category: false })
+const form = reactive({ name: '', description: '', purchase_group_id: undefined as number | undefined, 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 })
 
 function handlePageChange() {
   window.scrollTo({ top: 0, behavior: 'smooth' })
@@ -86,15 +88,20 @@ async function fetchCategories() {
   categories.value = res.data || []
 }
 
+async function fetchPurchaseGroups() {
+  const res: any = await adminApi.getPurchaseGroups()
+  purchaseGroups.value = res.data || []
+}
+
 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, allow_cross_category: false })
+  Object.assign(form, { name: '', description: '', purchase_group_id: undefined, min_amount: undefined, max_amount: undefined, min_quantity: undefined, max_quantity: undefined, min_weight: undefined, max_weight: undefined })
   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, allow_cross_category: row.allow_cross_category || false })
+  Object.assign(form, { name: row.name, description: row.description || '', purchase_group_id: row.purchase_group_id, 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 })
   showAdd.value = true
 }
 
@@ -122,7 +129,10 @@ async function deleteCat(id: number) {
   await fetchCategories()
 }
 
-onMounted(fetchCategories)
+onMounted(() => {
+  fetchCategories()
+  fetchPurchaseGroups()
+})
 </script>
 
 <style scoped lang="scss">

frontend/src/views/admin/PurchaseGroups.vue

@@ -0,0 +1,98 @@
+<template>
+  <div class="purchase-groups-page">
+    <div class="page-header">
+      <el-button type="primary" @click="openAdd">创建分组</el-button>
+    </div>
+    <div class="table-card">
+      <el-table :data="groups">
+        <el-table-column prop="id" label="ID" width="80" />
+        <el-table-column prop="name" label="分组名称" />
+        <el-table-column prop="description" label="描述" />
+        <el-table-column label="关联分类" width="200">
+          <template #default="{ row }">
+            <span v-if="row.categories && row.categories.length">
+              {{ row.categories.map((c: any) => c.name).join('、') }}
+            </span>
+            <span v-else>-</span>
+          </template>
+        </el-table-column>
+        <el-table-column label="操作" width="120">
+          <template #default="{ row }">
+            <el-button link type="primary" size="small" @click="editGroup(row)">编辑</el-button>
+            <el-button link type="danger" size="small" @click="deleteGroup(row.id)">删除</el-button>
+          </template>
+        </el-table-column>
+      </el-table>
+    </div>
+    <el-dialog v-model="showAdd" :title="editing ? '编辑分组' : '创建分组'" width="500px">
+      <el-form :model="form" label-width="80px">
+        <el-form-item label="名称"><el-input v-model="form.name" /></el-form-item>
+        <el-form-item label="描述"><el-input v-model="form.description" type="textarea" /></el-form-item>
+      </el-form>
+      <template #footer>
+        <el-button @click="showAdd = false">取消</el-button>
+        <el-button type="primary" @click="saveGroup">保存</el-button>
+      </template>
+    </el-dialog>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, reactive, onMounted } from 'vue'
+import { ElMessage, ElMessageBox } from 'element-plus'
+import { adminApi } from '../../api'
+
+const groups = ref<any[]>([])
+const showAdd = ref(false)
+const editing = ref<any>(null)
+const form = reactive({ name: '', description: '' })
+
+async function fetchGroups() {
+  const res: any = await adminApi.getPurchaseGroups()
+  groups.value = res.data || []
+}
+
+function openAdd() {
+  editing.value = null
+  Object.assign(form, { name: '', description: '' })
+  showAdd.value = true
+}
+
+function editGroup(row: any) {
+  editing.value = row
+  Object.assign(form, { name: row.name, description: row.description || '' })
+  showAdd.value = true
+}
+
+async function saveGroup() {
+  try {
+    if (editing.value) {
+      await adminApi.updatePurchaseGroup(editing.value.id, form)
+    } else {
+      await adminApi.createPurchaseGroup(form)
+    }
+    ElMessage.success('保存成功')
+    showAdd.value = false
+    editing.value = null
+    await fetchGroups()
+  } catch (error: any) {
+    const msg = error.response?.data?.error || '保存失败'
+    ElMessage.error(msg)
+  }
+}
+
+async function deleteGroup(id: number) {
+  await ElMessageBox.confirm('确定删除此分组？', '确认')
+  await adminApi.deletePurchaseGroup(id)
+  ElMessage.success('删除成功')
+  await fetchGroups()
+}
+
+onMounted(fetchGroups)
+</script>
+
+<style scoped lang="scss">
+.purchase-groups-page { padding: 0; }
+.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
+.table-card { background: #2d2d44; border: 1px solid rgba(255, 255, 255, 0.06); border-radius: 12px; padding: 20px; }
+</style>