feat(purchase): 采购申请批量审批（解决循环提交需多次审批）

问题: 一次提交 10 个物品生成 10 条独立申请，审批人需操作 10 次

后端:
- 新增 POST /api/v1/purchase/batch-approve 批量审批接口
  接收 ids + action，循环审批，成功/失败分别返回

前端:
- 待审批列表加多选列（仅 status=0 可勾选）
- 顶部批量操作栏：批量通过 / 批量驳回 / 取消选择
- 批量驳回弹窗统一填写驳回原因

inventory-backend/app/api/v1/purchase.py

@@ -205,6 +205,61 @@ def approve_purchase_request(purchase_id):
 # 5. 获取可选审批人列表
 # GET /api/v1/purchase/approvers
 # --------------------------------------------------------
+@purchase_bp.route('/batch-approve', methods=['POST'])
+@jwt_required()
+@permission_required('inbound_purchase:operation')
+def batch_approve_purchase():
+    """
+    批量审批采购申请（解决循环提交导致的多条记录需多次审批问题）
+
+    请求体:
+    {
+        "ids": [1, 2, 3],
+        "action": "approve" | "reject",
+        "reject_reason": "驳回原因（reject 时必填）"
+    }
+    """
+    try:
+        user_id = get_current_user_id()
+        data = request.get_json() or {}
+        ids = data.get('ids', [])
+        action = data.get('action', 'approve')
+        reject_reason = data.get('reject_reason')
+
+        if not ids or not isinstance(ids, list):
+            return jsonify({'code': 400, 'msg': 'ids 不能为空'}), 400
+        if action not in ('approve', 'reject'):
+            return jsonify({'code': 400, 'msg': '无效的审批操作'}), 400
+        if action == 'reject' and not reject_reason:
+            return jsonify({'code': 400, 'msg': '驳回时必须提供原因'}), 400
+
+        success_ids = []
+        error_items = []
+        for pid in ids:
+            try:
+                purchase = PurchaseService.approve_purchase_request(
+                    purchase_id=pid,
+                    user_id=user_id,
+                    action=action,
+                    reject_reason=reject_reason
+                )
+                success_ids.append(purchase.id)
+            except ValueError as e:
+                error_items.append({'id': pid, 'msg': str(e)})
+            except Exception as e:
+                traceback.print_exc()
+                error_items.append({'id': pid, 'msg': str(e)})
+
+        msg = f'批量审批完成: 成功 {len(success_ids)} 条'
+        if error_items:
+            msg += f', 失败 {len(error_items)} 条'
+        return jsonify({'code': 200, 'msg': msg, 'data': {'success_ids': success_ids, 'errors': error_items}}), 200
+
+    except Exception as e:
+        traceback.print_exc()
+        return jsonify({'code': 500, 'msg': f'服务器内部错误: {str(e)}'}), 500
+
+
 @purchase_bp.route('/approvers', methods=['GET'])
 @jwt_required()
 def get_purchase_approvers():

inventory-web/src/api/purchase.ts

@@ -87,6 +87,19 @@ export function approvePurchase(id: number, data: {
   })
 }
 
+// 批量审批采购申请（循环提交产生的多条记录可一次审批）
+export function batchApprovePurchase(data: {
+  ids: number[]
+  action: 'approve' | 'reject'
+  reject_reason?: string
+}) {
+  return request({
+    url: '/purchase/batch-approve',
+    method: 'post',
+    data
+  })
+}
+
 // 获取可选审批人列表
 export function getPurchaseApprovers() {
   return request({

inventory-web/src/views/purchase/index.vue

@@ -17,8 +17,19 @@
       </el-button>
     </div>
 
+    <!-- ★ 批量审批操作栏（仅待审批页 + 有审批权限） -->
+    <div v-if="filterStatus === 0 && canApprove && selectedRows.length > 0" class="batch-bar">
+      <span>已选 <b style="color:#409EFF;">{{ selectedRows.length }}</b> 条待审批申请</span>
+      <el-button type="success" size="small" :loading="batchLoading" @click="handleBatchApprove">批量通过</el-button>
+      <el-button type="danger" size="small" :loading="batchLoading" @click="openBatchRejectDialog">批量驳回</el-button>
+      <el-button size="small" @click="clearSelection">取消选择</el-button>
+    </div>
+
     <!-- 数据表格 -->
-    <el-table v-loading="loading" :data="list" border stripe style="margin-top: 16px;" row-key="id">
+    <el-table v-loading="loading" :data="list" border stripe style="margin-top: 16px;" row-key="id" @selection-change="handleSelectionChange">
+      <!-- ★ 多选列：仅待审批状态可勾选 -->
+      <el-table-column v-if="filterStatus === 0 && canApprove" type="selection" width="50" align="center"
+          :selectable="(row: any) => row.status === 0" />
       <el-table-column prop="request_no" label="申请单号" width="180" />
       <el-table-column prop="name" label="采购物品" min-width="150" show-overflow-tooltip />
       <el-table-column prop="spec_model" label="规格型号" min-width="120" show-overflow-tooltip />
@@ -277,6 +288,22 @@
       </template>
     </el-dialog>
 
+    <!-- ========== 批量驳回原因弹窗 ========== -->
+    <el-dialog v-model="batchRejectDialogVisible" title="批量驳回" width="480px" destroy-on-close :close-on-click-modal="false" :close-on-press-escape="false">
+      <el-form label-width="80px">
+        <el-form-item label="驳回数量">
+          <span style="font-weight: bold; color: #F56C6C;">{{ selectedRows.length }}</span> 条
+        </el-form-item>
+        <el-form-item label="驳回原因" required>
+          <el-input v-model="batchRejectReason" type="textarea" :rows="4" placeholder="请填写统一驳回原因（必填）" maxlength="200" show-word-limit />
+        </el-form-item>
+      </el-form>
+      <template #footer>
+        <el-button @click="batchRejectDialogVisible = false">取消</el-button>
+        <el-button type="danger" :loading="batchLoading" @click="confirmBatchReject">确认批量驳回</el-button>
+      </template>
+    </el-dialog>
+
   </div>
 </template>
 
@@ -289,7 +316,7 @@ import { useUserStore } from '@/stores/user'
 import { searchMaterialPurchase } from '@/api/purchase'
 import {
   getPurchaseList, createPurchase, getPurchaseDetail,
-  approvePurchase, getPurchaseApprovers, autoFillPurchase
+  approvePurchase, batchApprovePurchase, getPurchaseApprovers, autoFillPurchase
 } from '@/api/purchase'
 import { uploadFile, deleteFile } from '@/api/common/upload'
 import type { FormInstance } from 'element-plus'
@@ -311,6 +338,72 @@ const rejectDialogVisible = ref(false)
 const currentRejectRow = ref<any>(null)
 const rejectReason = ref('')
 
+// ★ 批量审批
+const selectedRows = ref<any[]>([])
+const batchLoading = ref(false)
+const batchRejectDialogVisible = ref(false)
+const batchRejectReason = ref('')
+
+// 多选变化
+const handleSelectionChange = (rows: any[]) => {
+  selectedRows.value = rows
+}
+
+// 清除选择
+const clearSelection = () => {
+  selectedRows.value = []
+}
+
+// 批量通过
+const handleBatchApprove = async () => {
+  if (selectedRows.value.length === 0) return
+  const ids = selectedRows.value.map(r => r.id)
+  try {
+    await ElMessageBox.confirm(
+      `确定批量通过 ${ids.length} 条采购申请吗？`,
+      '批量审批确认',
+      { confirmButtonText: '批量通过', cancelButtonText: '取消', type: 'info' }
+    )
+  } catch { return }
+
+  batchLoading.value = true
+  try {
+    const res: any = await batchApprovePurchase({ ids, action: 'approve' })
+    ElMessage.success(res?.msg || `已通过 ${ids.length} 条`)
+    selectedRows.value = []
+    await fetchData()
+  } catch (err: any) {
+    ElMessage.error(err?.msg || '批量通过失败')
+  } finally {
+    batchLoading.value = false
+  }
+}
+
+// 批量驳回弹窗
+const openBatchRejectDialog = () => {
+  batchRejectReason.value = ''
+  batchRejectDialogVisible.value = true
+}
+
+// 确认批量驳回
+const confirmBatchReject = async () => {
+  if (selectedRows.value.length === 0) return
+  if (!batchRejectReason.value.trim()) { ElMessage.warning('请填写驳回原因'); return }
+  const ids = selectedRows.value.map(r => r.id)
+  batchLoading.value = true
+  try {
+    const res: any = await batchApprovePurchase({ ids, action: 'reject', reject_reason: batchRejectReason.value })
+    ElMessage.success(res?.msg || `已驳回 ${ids.length} 条`)
+    batchRejectDialogVisible.value = false
+    selectedRows.value = []
+    await fetchData()
+  } catch (err: any) {
+    ElMessage.error(err?.msg || '批量驳回失败')
+  } finally {
+    batchLoading.value = false
+  }
+}
+
 // 详情
 const detailDialogVisible = ref(false)
 const detail = ref<any>({})
@@ -869,6 +962,19 @@ onMounted(() => {
 .app-container { padding: 20px; }
 .filter-container { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
 
+/* 批量审批操作栏 */
+.batch-bar {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  margin-top: 12px;
+  padding: 8px 12px;
+  background: #ecf5ff;
+  border: 1px solid #d9ecff;
+  border-radius: 4px;
+  font-size: 13px;
+}
+
 /* 表单分组 */
 .form-section {
   background: #fafbfc;