如何获取用户角色并在用户卡上显示 angular5

Question

I have a document in the firestore. Users with roles in object form:

ktwmsjEnRxaVja8RFdSBAwSE7yi2
   uid: 'ktwmsjEnRxaVja8RFdSBAwSE7yi2',
   username: 'some user',
   **roles: 
        admin: false,
        user: true,
        dealer: false**
   updatedAt: 3938y349'

When I do an *ngFor="let user of users | async , I can get the user info on template with user.name . All good.

But how do I display on the user card their different roles?

if user has a role of user, admin , I want to display that on the template. Do I do another *ngFor on the user.roles ?

I want to display all true roles.

Answer 1

如果角色不是集合，则无需使用 * ngFor您可以简单地在模板中使用插值语法，如下所示

{{user.roles.admin}}