修复用户、角色、权限、添加或修改报错时再次添加后关联数据重复的问题

src/views/system/menu/module/add.vue

@@ -87,6 +87,7 @@ export default {
     doSubmit() {
       this.$refs['form'].validate((valid) => {
         if (valid) {
+          this.form.roles = []
           const _this = this
           this.roleIds.forEach(function(data, index) {
             const role = { id: data }

src/views/system/menu/module/edit.vue

@@ -103,6 +103,7 @@ export default {
     doSubmit() {
       this.$refs['form'].validate((valid) => {
         if (valid) {
+          this.form.roles = []
           const _this = this
           this.roleIds.forEach(function(data, index) {
             const role = { id: data }