修改内容管理

src/views/contentManager/contentOperation.vue

@@ -592,7 +592,7 @@ export default {
           let { subjectIdList, ...rest } = this.form
           let form = {
             ...rest,
-            subjectIdList: subjectIdList.join(',')
+            subjectIdList: subjectIdList ? subjectIdList.join(',') : null
           }
           let actionTime = form.actionTime
           // console.log(actionTime)