多个 formControl 的一个 md-autocomplete

这个例子需要 FormsModule 和 ReactiveFormsModule。请在你的应用程序/模块中导入它们。

import {FormsModule, ReactiveFormsModule} from '@angular/forms';

自动完成 - 概述 - example.html 的：

<md-input-container>
  <input mdInput placeholder="State" [mdAutocomplete]="auto" [formControl]="stateCtrl">
</md-input-container>

<p></p>

<md-input-container>
  <input mdInput placeholder="State2" [mdAutocomplete]="auto" [formControl]="stateCtrl2">
</md-input-container>

<p></p>

<md-input-container>
  <input mdInput placeholder="State3" [mdAutocomplete]="auto" [formControl]="stateCtrl3">
</md-input-container>

<md-autocomplete #auto="mdAutocomplete">
  <md-option *ngFor="let state of filteredStates | async" [value]="state">
    {{ state }}
  </md-option>
</md-autocomplete>

自动完成 - 概述 - example.ts：

import {Component} from '@angular/core';
import {FormControl} from '@angular/forms';

import 'rxjs/add/operator/startWith';
import 'rxjs/add/operator/map';

@Component({
  selector: 'autocomplete-overview-example',
  templateUrl: 'autocomplete-overview-example.html',
})
export class AutocompleteOverviewExample {
  stateCtrl: FormControl;
  stateCtrl2: FormControl;
  stateCtrl3: FormControl;
  filteredStates: any;

  states = [
    'Alabama',
    'Alaska',
    'Arizona',
    'Arkansas',
    'California',
    'Colorado',
    'Connecticut',
    'Delaware',
    'Florida',
    'Georgia',
    'Hawaii',
    'Idaho',
    'Illinois',
    'Indiana',
    'Iowa',
    'Kansas',
    'Kentucky',
    'Louisiana',
    'Maine',
    'Maryland',
    'Massachusetts',
    'Michigan',
    'Minnesota',
    'Mississippi',
    'Missouri',
    'Montana',
    'Nebraska',
    'Nevada',
    'New Hampshire',
    'New Jersey',
    'New Mexico',
    'New York',
    'North Carolina',
    'North Dakota',
    'Ohio',
    'Oklahoma',
    'Oregon',
    'Pennsylvania',
    'Rhode Island',
    'South Carolina',
    'South Dakota',
    'Tennessee',
    'Texas',
    'Utah',
    'Vermont',
    'Virginia',
    'Washington',
    'West Virginia',
    'Wisconsin',
    'Wyoming',
  ];

  constructor() {
    this.stateCtrl = new FormControl();
    this.stateCtrl2 = new FormControl();
    this.stateCtrl3 = new FormControl();
    this.filteredStates = this.stateCtrl.valueChanges
        .startWith(null)
        .map(name => this.filterStates(name));
    this.filteredStates = this.stateCtrl2.valueChanges
        .startWith(null)
        .map(name => this.filterStates(name));
    this.filteredStates = this.stateCtrl3.valueChanges
        .startWith(null)
        .map(name => this.filterStates(name));
  }

  filterStates(val: string) {
    return val ? this.states.filter(s => s.toLowerCase().indexOf(val.toLowerCase()) === 0)
               : this.states;
  }

}

实例