Rest API Update Person Field (Multi user), Lookup Field(Multi lookup), Taxonomy Columns(Multi terms)

Question

how do i update complex fields like person/Group, Taxonomy, Lookup in rest api?

any code samples would definitely help me?

Answer 1

Update User field("UserField")

Multiple user field value:

var item = {
    '__metadata' : { 'type': 'SP.Data.TestListItem' },
    'UserFieldId' : { 'results': [10,11] }
};

Single user field value:

var item = {
    '__metadata' : { 'type': 'SP.Data.TestListItem' },
    'UserFieldId' : 10
};

Update Lookup field("LookupField")

var item = {
    '__metadata' : { 'type': 'SP.Data.TestListItem' },
    'LookupFieldId' : 1
};

Update Managed Metadata field("MyTaxonomyField")

var metaObject={
    '__metadata': { 'type': 'SP.Taxonomy.TaxonomyFieldValue' },
    'Label':'<YOUR LABEL>',
    'TermGuid':'<YOUR TERM GUID>',
    'WssId': -1
}
var item = {
    '__metadata' : { 'type': 'SP.Data.TestListItem' },  
    'MyTaxonomyField' : metaObject
};