<div *ngFor="let article of articleList;let i = index">
<div class="item">
<div class="image-holder"
style="background-image: url(https://c9.io/blog/content/images/2015/07/ninja-1.jpg)">
<a href="https://c9.io/blog/title-wip-cloud9-shortcutfoo/"></a>
</div>
<div class="title">
<a class="title-ref" href="#">{{article.title}}</a>
</div>
<div class="text">
<div>
{{article.description}} <a class="text-ref" href="#">>></a>
</div>
</div>
<div class="item-header">
<div class="author">
<img class="img-circle"
src="https://c9.io/blog/content/images/2015/05/brady.jpg" />
</div>
<span class="author-name"><a class="user-ref" href="#">{{article.user.name}}</a></span>
<div class="time">2015-07-31</div>
</div>
</div>
</div>
我可以看到article.title
,描述等,但是article.user.name是未定义的。如果{{article.user}}
,它将显示对象。
如何正确打印article.user.name
?
答案 0 :(得分:0)
我认为你应该像这样使用安全导航操作符 -
https://fcm.googleapis.com/fcm/send
Content-Type:application/json
Authorization:key=AIzaSyZ-1u...0GBYzPu7Udno5aA
{
"to": "/topics/news",
"data": {
"message": "This is a Firebase Cloud Messaging Topic Message!",
}
}
此链接可为您提供更多详细信息:https://angular.io/docs/ts/latest/guide/template-syntax.html。请参阅“安全导航操作符(?。)和空属性路径”部分
看看这是否有帮助。