select2 add tags that already exist (insertTag and ajax)

Question

I am adding values that do not exist in the data retrieved by ajax as insertTag as follows:

insertTag: (data, tag) => {
  tag.id = JSON.stringify({ text: tag.id });
  data.push(tag);
},
templateResult: user => {
  ..elements code
  return el.toElement();
},
ajax: {
  url: url..,
  type: 'post',
  data: ({ term }) => {
    return {
      searchText: term
    };
  },
  processResults: ({ data }) => {
    ...
    return { data };
  }
}

Values that already exist are not added. But I would like to add the existing value as a tag.

question from:https://stackoverflow.com/questions/65622952/select2-add-tags-that-already-exist-inserttag-and-ajax

Answer 1

Waitting for answers