Get | Resolve Term ID for Term Value in SharePoint Metadata Service

This may be generic function you can use when you play with managed metadata (taxonomy) columns or with Managed Managed Metadata Service.

Notes:

• Used JSOM since no impletation in REST API to get done this task in SharePoint to date of post


• Passing term set ID is must since there may may be many term values equivalent in the term store


• For the example, I have retrieved the term set ID from the list field which glued with the managed metadata service.

Following code illustrate how to get term ID for term value provided.

[code language="javascript"]

// Resolve Term ID for the Term Value
function getTermIdForTermValue(siteUri, listName, fieldName, termValue) {
//Define
var deferred = $q.defer()
, termId;
var clientContext = new SP.ClientContext(siteUrl);
var list = clientContext.get_web().get_lists().getByTitle(listName);
//Tx field
var field = list.get_fields().getByInternalNameOrTitle(fieldName);
var txField = clientContext.castTo(field, SP.Taxonomy.TaxonomyField);
//load context
clientContext.load(field);
clientContext.load(txField);
// //excute async of context
clientContext.executeQueryAsync(
//Success on Async
Function.createDelegate(this
, function () {
//Getting term set of the field
var termSetId = txField.get_termSetId().toString();
var tSession = SP.Taxonomy.TaxonomySession.getTaxonomySession(clientContext);
var ts = tSession.getDefaultSiteCollectionTermStore();
var tset = ts.getTermSet(termSetId);
//Define term label to match
var lmi = new SP.Taxonomy.LabelMatchInformation(clientContext);
lmi.set_lcid(1033);
lmi.set_trimUnavailable(true);
lmi.set_termLabel(termValue);
var termMatches = tset.getTerms(lmi);
//context loading with taxanomy values
clientContext.load(tSession);
clientContext.load(ts);
clientContext.load(tset);
clientContext.load(termMatches);
clientContext.executeQueryAsync(
function () {
if (termMatches && termMatches.get_count() > 0) {
termId = termMatches.get_item(0).get_id().toString();
console.log("Resolved Term Id for Term " + termValue, termId);
deferred.resolve(termId);
}
else {
console.log("No IDs to resolved for Term " + termValue);
deferred.resolve(null);
}
}
, function (sender, args) {
console.log("Error on resolving term ID", args);
deferred.reject(null);
});
}
, function (sender, args) {
console.log(args.get_message() + '\n' + args.get_stackTrace());
})
//Failed on Async
, Function.createDelegate(this, function (err) {
console.error(err.get_message());
})
);
return deferred.promise;
}

[/code]

Click here to view in gist.

For more details refer following links;

• https://kushanlahiru.wordpress.com/2016/09/05/managed-metadata-column-value-add-with-angular-javascript-jsom-csom/


• https://kushanlahiru.wordpress.com/2016/09/07/update-sharepoint-metadata-taxonomy-column-with-angular-js/