修改通知目标角色必填的问题

src/views/core/message/index.vue

@@ -328,7 +328,7 @@
           </org-tree-select>
         </el-form-item>
         <!-- </el-form-item>-->
-        <el-form-item label="目标角色" v-if="isShow" prop="tagRoleIds">
+        <el-form-item label="目标角色" v-if="isShow" prop="tagRoleIds" :rules="{required: isShow?true:false, message: '请选择目标角色', trigger: 'blur'}">
           <el-select
             v-model="form.tagRoleIds"
             placeholder="请选择目标角色"