多個 formControl 的一個 md-autocomplete

這個例子需要 FormsModule 和 ReactiveFormsModule。請在你的應用程式/模組中匯入它們。

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

自動完成 - 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>

自動完成 - 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;
  }

}

例項