使用REST更新库项目元数据 [英] Use REST to update library item meta data

问题描述

我有一个记录中心网站，其中包括图书馆"Drop Off Library"。

我创建了多个网站内容类型并将其分配给"Drop Off Library" ;。

我能够成功地将文档上传到"Drop Off Library"。使用REST。

这是我遇到麻烦的地方。

我需要：

1：将上传项目的内容类型更改为"文档"以外的内容类型，这是该库的默认内容类型。

2：更新项目的元数据内容类型已更改。

我没有成功＃1，所以我转到＃2，并尝试设置"标题"。价值，我也没有成功。

以下是我在Fiddler看到的内容：

我得到了400响应错误：  参数  __元数据在方法GetById中不存在。

这是我在Fiddler中使用的代码：

URI：

 https://Mysharepoint.com/sites/rms/_api/web/lists/getbytitle（'Drop％20Off％20Library'）// items（29）

请求：

请注意，我调用/ _api / contextinfo来获取X-RequestDigest的值。

 User-Agent：Fiddler 
主持人：Mysharepoint.com 
内容类型：application / json; odata = verbose 
 accept：application / json; odata =详细
内容长度：110 
 X-RequestDigest：0x936E127517E4C06B8845257F7AD05C179C18B1F4ECFEA89089CB1B68D76163EC7B70AEB0A64DE8B36FF75CA242640063615A5F8409C0EAE088316ABE833D5FC3,21 Jun 2017 14:11:20 -0000 
 X-HTTP-Method：Merge 

请求正文：

 { " __metadata"：
 {
" type"：" SP.Data.DropOffLibraryItem" 
} 
，" Title"：" whatever" 
} 

有人可以协助吗？

---

Bill Behning

解决方案

嗨WRBehning，

请使用下面的代码更新库项目的元数据（用您的ListName和ListItemId替换）：

< script src = QUOT; HTTP：//code.jquery.com/jquery-latest.js"类型= QUOT;文本/ JavaScript的">< /脚本> 
< script type =" text / javascript"> 
函数UpdateListItem（）{
 var listName =" doc1" ;; 
 var listItemId = 1; 
 var itemType = GetItemTypeForListName（listName）; 
 console.log（itemType）; 
 var item = {
" __ metadata"：{" type"：itemType}，
" Title"：" value change" 
}; 

.ajax（{
url：_spPageContextInfo.siteAbsoluteUrl +" / _ api / web / lists / getbytitle（'" + listName +" '）/ items（" + listItemId +"）"，
type：" POST"，
contentType：" application / json; odata = verbose"，
data： JSON.stringify（item），
header：{
" Accept"：" application / json; odata = verbose"，
" X-RequestDigest"：

（" #__ REQUESTDIGEST"）。val（），
" X-HTTP-Method"：" MERGE"，
" If-Match"：" * "
}，
成功：函数（数据）{
alert（'Success'）;
window.location.href = window.location.href;
}，
错误：函数（数据）{
alert（" Error"）;
}
}）;
}

//获取列表项类型元数据
函数GetItemTypeForListName（name）{
return" SP.Data。" + name.charAt（0）.toUpperCase（）+ name.split（""）。join（""）。s​​lice（1）+" Item" ;;
}
< / script>
< input type =" button"的onclick = QUOT; UpdateListItem（）"值= [更新" />

以下是结果捕获：

谢谢

最好的问候

I have a Records Center site which includes the library "Drop Off Library".

I have created several site content types and assigned them to "Drop Off Library".

I am able to successfully upload a document to "Drop Off Library" using REST.

This is where I am having trouble.

I need to:

1: Change the content type of the uploaded item to a content type other than "Document", which is the default content type for the library.

2: Update the meta data of the item after the content type has been changed.

I was unsuccessful with #1, so I moved on to #2, and tried to set the "Title" value, which I have been unsuccessful as well.

Here is what I am seeing in Fiddler:

I get a 400 response with the error: The parameter  __metadata does not exist in method GetById.

Here is my code used in Fiddler:

URI:

https://Mysharepoint.com/sites/rms/_api/web/lists/getbytitle('Drop%20Off%20Library')//items(29)

Request:

Note that I make a call to /_api/contextinfo to get the value for X-RequestDigest.

User-Agent: Fiddler
Host: Mysharepoint.com
Content-Type: application/json;odata=verbose
accept: application/json;odata=verbose
Content-Length: 110
X-RequestDigest: 0x936E127517E4C06B8845257F7AD05C179C18B1F4ECFEA89089CB1B68D76163EC7B70AEB0A64DE8B36FF75CA242640063615A5F8409C0EAE088316ABE833D5FC3,21 Jun 2017 14:11:20 -0000
X-HTTP-Method: Merge

Request Body:

 {" __metadata": 
    { 
        "type": "SP.Data.DropOffLibraryItem"
     }
    ,"Title": "whatever"
}

Can someone please assist?

---

Bill Behning

解决方案

Hi WRBehning,

Please use the code below to update metadata for library item (replace the ListName and ListItemId with yours) :

<script src="http://code.jquery.com/jquery-latest.js" type="text/javascript"></script>
<script type="text/javascript">
function UpdateListItem(){
    var listName="doc1";
    var listItemId= 1;
    var itemType = GetItemTypeForListName(listName);
    console.log(itemType);
    var item = {
        "__metadata": { "type": itemType },
        "Title": "value change"    
    };

.ajax({ url: _spPageContextInfo.siteAbsoluteUrl + "/_api/web/lists/getbytitle('" + listName + "')/items("+listItemId+")", type: "POST", contentType: "application/json;odata=verbose", data: JSON.stringify(item), headers: { "Accept": "application/json;odata=verbose", "X-RequestDigest":

("#__REQUESTDIGEST").val(), "X-HTTP-Method": "MERGE", "If-Match": "*" }, success: function (data) { alert('Success'); window.location.href=window.location.href; }, error: function (data) { alert("Error"); } }); } // Get List Item Type metadata function GetItemTypeForListName(name) { return "SP.Data." + name.charAt(0).toUpperCase() + name.split(" ").join("").slice(1) + "Item"; } </script> <input type="button" onclick="UpdateListItem()" value="Update"/>

Here is the result capture:

Thanks

Best Regards

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