我正在使用SharePoint Framework开发web部件,我的代码基本上是调用两个方法来从SharePoint Online获取信息,当我在render((方法上调用这些方法时,我得到了如下结果:
---RENDER START---
---完成RENDER---
- GetItems((=>ID:1标题:新办公室
- GetItems((=>ID:2标题:中期评论
- GetItems((=>ID:3标题:DevOps培训
GetItems((=>ID:4标题:与我们合作!
-GetAttachments((=>ID:2文件名:reviews.jpeg
-GetAttachments((=>ID:1文件名:new-office.jpg
-GetAttachments((=>ID:3文件名:devops.jpeg
-GetAttachments((=>ID:4文件名:careers.png
我希望调用这些方法并将它们的结果返回给我,然后在我的自定义HTML渲染中使用它们,预期的结果如下:
---RENDER START---
GetItems((=>ID:1标题:新建Office
-GetAttachments((=>ID:1文件名:reviews.jpeg
GetItems((=>ID:2标题:中期评论
-GetAttachments((=>ID:2文件名:new-office.jpg
GetItems((=>ID:3标题:DevOps培训
-GetAttachments((=>ID:3文件名:devops.jpeg
GetItems((=>ID:4标题:与我们合作!
-GetAttachments((=>ID:4文件名:careers.png
---已完成归还---
//使用自定义HTML中返回的结果来呈现
现在代码正在运行"wild",htmlAttachments变量没有收到任何结果,并且渲染完全为空,在渲染之前应该如何获取结果?
这是我的代码:
public async GetItems() : Promise<IListItems>
{
let formattedResponse: IListItems = {value: []};
await pnp.sp.web.lists.getByTitle('LIST').items.select('Id, Title, Body, Link').get().then( response => {
response.map( (object: any, i: number) => {
formattedResponse.value.push( {Id : object.Id, Title: object.Title, Body: object.Body, Link : object.Link.Url} );
});
});
return formattedResponse;
}
public async GetAttachments(itemId: number) : Promise<IFileItems>
{
let formattedResponse: IFileItems = {value: []};
await pnp.sp.web.lists.getByTitle('LIST').items.getById(itemId).attachmentFiles.get().then( response => {
response.map( (object: any, i: number) => {
formattedResponse.value.push( {Id : itemId, FileName: object.ServerRelativeUrl} );
});
});
return formattedResponse;
}
public render() : void
{
let htmlAttachments: string = '';
htmlAttachments += '<ul>';
this.GetItems().then( (responseItems: IListItems) => {
responseItems.value.forEach( elementItems => {
console.log("GetItems() ==> ", elementItems.Id, elementItems.Title);
this.GetAttachments(elementItems.Id).then( (responseAtt: IFileItems) => {
responseAtt.value.forEach( elementAtt => {
console.log("t GetAttachments() ==> ", elementAtt.Id, elementAtt.FileName);
htmlAttachments += '<li>' + 'ID: ' + elementAtt.Id + ' - Title: ' + elementAtt.FileName + '</li>';
});
});
});
});
htmlAttachments += '</ul>';
this.domElement.innerHTML = htmlAttachments;
}
这有点晚,但您可以去掉GetAttachments
方法本身。
在第一个调用GetItems
中,您可以获取附件文件,然后在HTML中使用它们。
您可以从以下示例代码进行修改:
public async GetItems() : Promise<IListItems>
{
let formattedResponse: IListItems = {value: []};
await pnp.sp.web.lists.getByTitle("LIST")
.items
.select("Id", "Title", "Body", "Link","AttachmentFiles")
.expand("AttachmentFiles")
.get()
.then(response => {
response.map((object: any, i: number) => {
formattedResponse.value.push({
Id : object.Id,
Title: object.Title,
Body: object.Body,
Link : object.Link.Url,
FileName: object.AttachmentFiles[0].FileName,
FileUrl : object.AttachmentFiles[0].ServerRelativeUrl
});
});
});
return formattedResponse;
}
参考-使用PnP JS 中的列表项