Please provide a working solution for this, I'm getting 400 bad request error when doing a batch update. I tried Andrew Cornell's blog post in this regard. But couldn't get it to work yet. Below is the code I tried.
// create the changeset
batchContents.push('--changeset_' + changeSetId);
batchContents.push('Content-Type: application/http');
batchContents.push('Content-Transfer-Encoding: binary');
batchContents.push('');
batchContents.push('POST ' + webUrl + '(' + itemProperties[i].Id + ')' + ' HTTP/1.1'); //+ '(' +itemProperties[i].Id + ')'
batchContents.push('Content-Type: application/json;odata=verbose');
batchContents.push('Accept: application/json;odata=verbose');
batchContents.push('If-Match: ' + itemProperties[i].__metadata.etag);
//batchContents.push('X-HTTP-Method:' + 'MERGE');
batchContents.push('X-RequestDigest:' + $("#__REQUESTDIGEST").val());
batchContents.push('');
batchContents.push(JSON.stringify(itemUpdater));
batchContents.push('');
}
// END changeset to create data
batchContents.push('--changeset_' + changeSetId + '--');
// generate the body of the batch
var batchBody = batchContents.join('\r\n');
// start with a clean array
batchContents = new Array();
// create batch for creating items
batchContents.push('--batch_' + batchGuid);
batchContents.push('Content-Type: multipart/mixed; boundary="changeset_' + changeSetId + '"');
batchContents.push('Content-Length: ' + batchBody.length);
batchContents.push('Content-Transfer-Encoding: binary');
batchContents.push('');
batchContents.push(batchBody);
batchContents.push('');
//bath end
batchContents.push('--batch_' + batchGuid);
batchBody = batchContents.join('\r\n');
// create the request endpoint
var endpoint = _spPageContextInfo.webAbsoluteUrl
+ '/_api/$batch';
// batches need a specific header
var batchRequestHeader = {
'X-RequestDigest': jQuery("#__REQUESTDIGEST").val(),
'Content-Type': 'multipart/mixed; boundary="batch_' + batchGuid + '"'
};
url: endpointUri,
type: 'POST',
async: false,
headers: batchRequestHeader,
data: batchBody,
