校历删除功能完善

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

@@ -275,16 +275,20 @@ export default {
   beforeDestroy() {
     this.$root.$off('semester-current-changed', this.handleCurrentChanged)
   },
+  watch: {
+    'form.kxrq': 'calculateWeeks',
+    'form.jsrq': 'calculateWeeks'
+  },
   methods: {
     /** 顶栏切换当前学期后自动刷新 */
     handleCurrentChanged() {
       this.getList()
     },
-    /** 初始化学年选项 */
+    /** 初始化学年选项（新增时只能从当前年份往后选择） */
     initYearOptions() {
       const current = new Date().getFullYear()
       const list = []
-      for (let i = current - 10; i <= current + 10; i++) {
+      for (let i = current; i <= current + 10; i++) {
         list.push(i)
       }
       this.yearOptions = list
@@ -331,6 +335,22 @@ export default {
       if (!value) return ''
       return String(value).slice(0, 10)
     },
+    /** 根据开学日期和结束日期自动计算学期周数 */
+    calculateWeeks() {
+      const kxrq = this.form.kxrq
+      const jsrq = this.form.jsrq
+      if (!kxrq || !jsrq) return
+      const start = new Date(String(kxrq).slice(0, 10).replace(/-/g, '/'))
+      const end = new Date(String(jsrq).slice(0, 10).replace(/-/g, '/'))
+      if (isNaN(start.getTime()) || isNaN(end.getTime())) return
+      if (end < start) return
+      // 以开学当周周一为起点，向上取整到周
+      const day = start.getDay()
+      const monday = new Date(start)
+      monday.setDate(start.getDate() - (day === 0 ? 6 : day - 1))
+      const days = Math.round((end - monday) / (24 * 3600 * 1000)) + 1
+      this.$set(this.form, 'sdzs', Math.max(1, Math.ceil(days / 7)))
+    },
     /** 查询学期列表 */
     getList() {
       this.loading = true