0906AM

src/pages/system/cmsManager/majorProjects/edit.vue

       <div>
         <el-table
           ref="courseTable"
-          :data="courses.list"
+          :data="coursesList"
           tooltip-effect="dark"
           stripe
           @selection-change="handleSelectionChange"
         this.detailimgs = val
       }
     },
+    coursesList () {
+      return (this.courses.list || []).map(x => {
+        return {
+          CourseId: x.CourseId,
+          CourseName: x.CourseName,
+          BeginDate: x.BeginDate,
+          EndDate: x.BeginDate
+        }
+      })
+    },
   },
   methods: {
     ...mapCaseActions([
     },
     toggleSelection (rows) {
       if (rows) {
-        rows.map(row => {
+        rows.forEach(row => {
           this.$refs.courseTable.toggleRowSelection(row)
         })
       } else {
     coursesShow () {
       this.selCourseVisible = true
       setTimeout(() => {
-        this.toggleSelection(this.detail.Courses)
+        this.toggleSelection(this.coursesList.filter(x => (this.detail.Courses || []).filter(y => y.CourseId === x.CourseId).length > 0))
       }, 30)
     },
     handleSelectionChange (val) {