教学业务：教学场地里的教学场地类型下拉框 反向覆盖问题修复

frontend/src/views/teachBusiness/venue/index.vue

@@ -199,7 +199,8 @@ import {
   addClassroom,
   deleteClassroom,
   updateClassroom,
-  listClassroom
+  listClassroom,
+  listAllClassroom
 } from '@/api/teachBusiness/classroom'
 
 export default {
@@ -215,6 +216,7 @@ export default {
         ty: ''
       },
       tableData: [],
+      jxcdlxOptions: [],
       total: 0,
       pageNum: 1,
       pageSize: 20,
@@ -230,20 +232,42 @@ export default {
       }
     }
   },
-  computed: {
-    /** 教学场地类型下拉：由已加载数据中的去重值动态生成，避免硬编码 */
-    jxcdlxOptions() {
-      const set = new Set()
-      this.tableData.forEach(row => {
-        if (row.jxcdlx) set.add(row.jxcdlx)
-      })
-      return Array.from(set)
-    }
-  },
   created() {
+    this.loadVenueTypeOptions()
     this.fetchList()
   },
   methods: {
+    /**
+     * 独立加载全部场地类型，避免查询结果收窄后下拉候选项同步丢失。
+     */
+    loadVenueTypeOptions() {
+      return listAllClassroom().then(response => {
+        this.jxcdlxOptions = this.collectVenueTypes(response.data || [])
+      }).catch(() => {
+        // 全量接口异常时保留已收集选项，避免影响列表的基本查询功能。
+        this.mergeVenueTypeOptions(this.tableData)
+      })
+    },
+
+    collectVenueTypes(classrooms) {
+      const venueTypes = new Set()
+      classrooms.forEach(classroom => {
+        const venueType = classroom.jxcdlx && String(classroom.jxcdlx).trim()
+        if (venueType) {
+          venueTypes.add(venueType)
+        }
+      })
+
+      return Array.from(venueTypes).sort((first, second) => first.localeCompare(second, 'zh-CN'))
+    },
+
+    mergeVenueTypeOptions(classrooms) {
+      const venueTypes = new Set(this.jxcdlxOptions)
+      this.collectVenueTypes(classrooms).forEach(venueType => venueTypes.add(venueType))
+      this.jxcdlxOptions = Array.from(venueTypes)
+        .sort((first, second) => first.localeCompare(second, 'zh-CN'))
+    },
+
     /* ---------- 列表加载 ---------- */
     fetchList() {
       this.loading = true
@@ -260,6 +284,7 @@ export default {
       listClassroom(params).then(response => {
         const data = response.data || {}
         this.tableData = data.records || []
+        this.mergeVenueTypeOptions(this.tableData)
         this.total = data.total || 0
       }).catch(() => {
         this.tableData = []
@@ -324,6 +349,7 @@ export default {
         req.then(() => {
           this.$message.success(isEdit ? '修改成功' : '新增成功')
           this.dialog.visible = false
+          this.loadVenueTypeOptions()
           this.fetchList()
         }).catch(() => {}).finally(() => {
           this.dialog.submitting = false
@@ -341,6 +367,7 @@ export default {
         return deleteClassroom(row.id)
       }).then(() => {
         this.$message.success('删除成功')
+        this.loadVenueTypeOptions()
         this.fetchList()
       }).catch(() => {})
     },