0

我的 ReactJs SPFx 共享点在线 Web 部件中有以下类型脚本：-

import * as React from 'react';
import * as ReactDom from 'react-dom';
import { Version } from '@microsoft/sp-core-library';
import {
  IPropertyPaneConfiguration,
  IPropertyPaneDropdownOption,
  PropertyPaneDropdown} from '@microsoft/sp-property-pane';
import { BaseClientSideWebPart } from '@microsoft/sp-webpart-base';

import * as strings from 'ContactListWebPartStrings';
import ContactListApp from './components/ContactListApp';
import { IContactListProps } from './components/IContactListProps';
import { sp } from "@pnp/sp/presets/all";


export interface IContactListWebPartProps {
  department: string;
}

export default class ContactListWebPart extends BaseClientSideWebPart<IContactListWebPartProps> {
  private viewModeOptions: IPropertyPaneDropdownOption[] = null;
  public render(): void {
    const element: React.ReactElement<IContactListProps> = React.createElement(
      ContactListApp,
      {
        department: this.properties.department,
        context: this.context
      }
    );

    ReactDom.render(element, this.domElement);
  }

  protected onDispose(): void {
    ReactDom.unmountComponentAtNode(this.domElement);
  }

  protected get dataVersion(): Version {
    return Version.parse('1.0');
  }
  public onInit(): Promise<void> {
    return super.onInit().then( _ => {
      sp.setup({
        spfxContext: this.context
      });
      const choice =  
      sp.web.lists.getByTitle('Contacts').fields.getByTitle('Department').get();
      this.viewModeOptions = choice.Choices.map((choice: string, idx: number) => 
      {
        return {
         key: idx,
         text: choice
        }
      })
   });
  }

  protected getPropertyPaneConfiguration(): IPropertyPaneConfiguration {
    return {
      pages: [
        {
          header: {
            description: strings.PropertyPaneDescription
          },
          groups: [
            {
              groupName: strings.BasicGroupName,
              groupFields: [
                PropertyPaneDropdown('department', {
                  label: 'Department',
                  options: this.viewModeOptions,
                  selectedKey: this.viewModeOptions[0].key,
                  disabled: !this.viewModeOptions
                 }),
              ]
            }
          ]
        }
      ]
    };
  }
}

但我收到此错误choice.Choices.map：-

“承诺”类型上不存在属性“选择”

4

1 回答 1

0

改变这个：

const choice = sp.web.lists.getByTitle('Contacts').fields.getByTitle('Department').get();

（在这种情况下，选择只是 Promise，而不是返回值。）

为了这：

const choice =  await sp.web.lists.getByTitle('Contacts').fields.getByTitle('Department').get();

（在这种情况下等待加载数据的原因和选择包含值。）

使用 await 内部函数，您需要像这样使其异步：

return super.onInit().then(async _ => {
于 2021-12-01T14:54:32.530 回答