Question

我正在使用＆＃39; ss-multiselect-dropdown＆＃39;用于多选下拉列表。我从下拉列表中选择了几个选项并保存了数据。当我下次更新数据时，该时间已经选择的数据应该显示为选中/选中。对于单选，它适用于双向数据绑定＆＃39; [（ngModel）]＆＃39;但是它不适用于多个选定值。如何使用＆＃39; ss-multiselect-dropdown＆＃39;显示/设置已选择/选中的已选数据？

提前致谢！

Answer 1

为此您可以使用数组：

selecOptions = [];

HTML方面：

                    <ss-multiselect-dropdown
                            [options]="finalServices"
                            [texts]="myTexts"
                            [settings]="mySettings"
                            [(ngModel)]="selecOptions"
                            (ngModelChange)="onChangeService($event)"
                            [ngModelOptions]="{standalone: true}">
                    </ss-multiselect-dropdown>

请记住，此选择基于id对象数组中的finalServices。

Answer 2

创建plunker以进行多选。

//our root app component
import {Component, NgModule, VERSION} from '@angular/core'
import {BrowserModule} from '@angular/platform-browser'
import {Component} from '@angular/core';
import { IMultiSelectSettings, IMultiSelectTexts } from 'angular-2-dropdown-multiselect/src/multiselect-dropdown';
import { MultiselectDropdownModule} from 'angular-2-dropdown-multiselect';
import { FormsModule } from '@angular/forms';

@Component({
  selector: 'my-app',
  template: `
      <ss-multiselect-dropdown [options]="myOptions" [texts]="myTexts" [settings]="mySettings" [(ngModel)]="optionsModel"></ss-multiselect-dropdown>
  `,
})
export class App {
  optionsModel: number[] = [ 2, 3];

// Settings configuration
mySettings: IMultiSelectSettings = {
    enableSearch: true,
    checkedStyle: 'fontawesome',
    buttonClasses: 'btn btn-default btn-block',
    dynamicTitleMaxItems: 3,
    displayAllSelectedText: true
};

// Text configuration
myTexts: IMultiSelectTexts = {
    checkAll: 'Select all',
    uncheckAll: 'Unselect all',
    checked: 'item selected',
    checkedPlural: 'items selected',
    searchPlaceholder: 'Find',
    searchEmptyResult: 'Nothing found...',
    searchNoRenderText: 'Type in search box to see results...',
    defaultTitle: 'Select',
    allSelected: 'All selected',
};

// Options
myOptions: IMultiSelectOption[] = [
    { id: 1, name: 'Volvo'},
    { id: 2, name: 'Honda'},
    { id: 3, name: 'BMW'},
    { id: 4, name: 'Audi'},
];

}

@NgModule({
  imports: [ BrowserModule,MultiselectDropdownModule, FormsModule ],
  declarations: [ App ],
  bootstrap: [ App ]
})
export class AppModule {}

有关详细信息，请参阅here。

如何使用＆ss -sultiselect-dropdown＆＃39;选择/检查已选择的数据。在Angular2？

2 个答案: