'Subscription'-angular2类型中缺少属性'includes' [英] Property 'includes' is missing in type 'Subscription' -angular2

问题描述

我一直在尝试从节点到服务onInit获取一个对象数组，并将其分配给组件。我能够查看服务中的数据但是当我尝试分配给组件中的变量时，我得到以下错误。我也包含了我的代码。请支持this.All我需要的是从服务中获取该数组并将其分配给组件中的finallist。

  ERROR in 
 
 C：/Users/girija/Documents/animapp/src/app/components/list.component.ts(28,5）：类型'订阅'不能分配给'any []' 。 
订阅类型中缺少'包含'属性。 
  

我的代码如下：
app.service.ts：

  public finallist = [] 
 getList（）{
 return this.http.get（'/ api / list'）。 subscribe（data => {
 this.finallist = JSON.parse（data ['_ body']）; 
返回this.finallist; 
}）
} 
  

app.component.ts：

  totallist = []; 
 ngOnInit（）{
 this.totallist = this.someService.getList（）; 
 
} 
  

解决方案

subscribe 返回订阅对象，这不是您所寻找的。

尝试这样的事情：

app.service.ts

  getList（）：Observable< any> {
返回this.http.get（'/ api / list'）。map（data => data ['_ body']）; 
} 
  

app.component.ts

  totallist = []; 
 
 ngOnInit（）{
 this.someService.getList（）。subscribe（data => this.totallist = data）; 
} 
  

I have been trying to get an array of objects from node to a service onInit and assign it to component. I am able to view data in service but when i try to assign to a variable in component, I get below error. I have included my code as well. Please favour on this.All i need is to just take that array from service and assign it to finallist in component.

ERROR in 

    C:/Users/girija/Documents/animapp/src/app/components/list.component.ts (28,5): Type 'Subscription' is not assignable to type 'any[]'.
      Property 'includes' is missing in type 'Subscription'.

My code is below: app.service.ts:

   public finallist=[]
     getList(){
          return this.http.get('/api/list').subscribe(data=>{
             this.finallist=JSON.parse(data['_body']);
             return this.finallist;
        })
        }

app.component.ts:

  totallist=[];
     ngOnInit() {
        this.totallist=this.someService.getList();

      }

解决方案

subscribe returns Subscription object, this is not what you have looking for.

Try something like this:

app.service.ts

getList(): Observable<any> {
  return this.http.get('/api/list').map(data => data['_body']);
}

app.component.ts

totallist=[];

ngOnInit() {
  this.someService.getList().subscribe(data => this.totallist = data);
}

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