我正在显示一些数据并按离子选择进行过滤。我在ion select中显示数组的数据。但有些值会重复5到6次。我只想显示一次值,有没有办法只显示一个值?可能是由过滤器完成的。有谁能知道我如何一次显示它的价值?
<div class="col-md-3">
<div class="form-group" >
<label for="">City</label>
<select class="form-control" [(ngModel)]="userFilter.city" >
<option *ngFor="let select of data" value="{{select.city}}">{{select.city}}</option>
</select>
</div>
</div>
.ts
import { Component, OnInit } from '@angular/core';
import { ApiService } from 'app/services/api/api.service';
import { map } from 'rxjs/operators';
import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
import { HttpClient, HttpHeaders } from '@angular/common/http';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/map'
@Component({
selector: 'app-home',
templateUrl: './home.component.html',
styleUrls: ['./home.component.scss']
})
export class HomeComponent {
clientData: Observable<any>;
data: any = [];
status: any = [];
countunsettled: any;
countsettled: any;
sums: any;
constructor(private modalService: NgbModal, private api:ApiService, public httpClient: HttpClient) {
this.getClaims();
}
userFilter: any = { claim_no:'', member_name:'', status:'', company_id: ''};
openDeal(deletecontent,x){
this.selectedDeal = x;
this.dealModal= this.modalService.open(deletecontent, x);
this.dealModal.result.then(r=>{
}, err=> console.log(err))
}
getClaims(){
if(this.userFilter.company_id){
let url = 'http://api.igiinsurance.com.pk:8888/insurance_IGItakaful/insurance-api/get_claims.php?company_id='+this.userFilter.company_id;
}else{
let url = 'http://api.igiinsurance.com.pk:8888/insurance_IGItakaful/insurance-api/get_claims.php?offset=0&limit=100';
}
this.clientData = this.httpClient.get(url).
subscribe(data => {
console.log(data);
this.data = data.records;
var status = 'settled';
var status2 = 'submitted';
var countsettled = this.data.filter((obj) => obj.status === status).length;
var countunsettled = this.data.filter((obj) => obj.status === status2).length;
console.log(countsettled);
this.countsettled = countsettled;
console.log(countunsettled);
this.countunsettled = countunsettled;
const sum1 = this.data.filter(item => item.status === 'settled')
.reduce((acc, item) => acc + Number(item.approved_value), 0);
console.log(sum1);
this.sum1 = sum1;
const sum2 = this.data.filter(item => item.status === 'submitted')
.reduce((acc, item) => acc + Number(item.approved_value), 0);
console.log(sum2);
this.sum2 = sum2
}
}
}
使用单独Set
的名称保留城市名称,这样就可以避免重复的值,因为它Set
仅保留任何类型的唯一值。
打字稿:
cities:Set = new Set();
// .... other codes
this.clientData = this.httpClient.get(url).subscribe(data => {
this.data = data.records;
// after loading data do the following
// add city value to the set
data.forEach(d => this.cities.add(d.city))
// ... remaining code
模板:
<div class="col-md-3">
<div class="form-group">
<label for="">City</label>
<select class="form-control" [(ngModel)]="userFilter.city">
<option *ngFor="let city of cities" value="{{city}}">{{city}}</option>
</select>
</div>
</div>
本文收集自互联网,转载请注明来源。
如有侵权,请联系 [email protected] 删除。
我来说两句