Sharepoint REST API筛选器空白查询字段 [英] Sharepoint REST API filter empty LookUp field

问题描述

我想知道如何在空查询中筛选SharePoint Rest API(2013)中的ListItems. 在我的列表项中，有一个查找(单值，不是必需的)，我想获取所有查找为空(空白)的项目.

I'd like to know how I can filter ListItems in SharePoint rest API (2013) on empty lookup. On my list items, there is a lookup (single value, not required) and i'd like to get all items where lookup is empty (blank).

_api/web/lists/getbytitle('MyList')/items?$select=Id&$expand=MyLookUp/Id&$filter=??

有人有线索吗?

Thx

推荐答案

SharePoint 2013中的REST API不支持用于对列表项查询进行筛选的空值.

不过，您可以将CAML查询与REST API结合使用以获取所需的数据.

请参考以下代码: (注意:请更改您的查询/URL):

Please refer below code : (Note : please change your query/URL):

 function _rest_Post(rquest) {
        return $.ajax({
            method: rquest.method,
            url: rquest.url,
            contentType: rquest.contentType,
            headers: rquest.header,
            data: JSON.stringify(rquest.body),
        });

    }

function GetByCaml(serviceParams) {
    var req = {
        method: 'POST',
        url: url + "/_api/web/lists/getByTitle('" + serviceParams.create.lName + "')/getitems",
        header: {
            "X-RequestDigest": $("#__REQUESTDIGEST").val(),
            "accept": "application/json;odata=verbose",
            "content-type": "application/json;odata=verbose"
        },
        body: serviceParams.create.body,
        contentType: "application/json;odata=verbose",

    };
    return _rest_Post(req);

}

function getData(){
    var queryViewXml = "<View><Query><Where><IsNull><FieldRef Name='Project_x0020_Manager'/></IsNull></Where></Query><ViewFields><FieldRef Name='Title'/></ViewFields></View>";
    var params = {};
    params.create= {};
    params.create.lName = "MyList";
    params.create.filter = "";
    params.create.body = {
        'query':{ 
            '__metadata': { 'type': 'SP.CamlQuery' },
            'ViewXml': queryViewXml
        }
    }
    return GetByCaml(params);
};


getData().then(function(data){
    //success handler
}, function(error){
    //failure handler
});

这篇关于Sharepoint REST API筛选器空白查询字段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！