Retrieve Document Library Choice Field Options via Rest

To get all choices with REST API:

• Site Column:
  • http://SITE/_api/web/fields/getByInternalNameOrTitle(fieldInternalName)
• List Column:
  • http://SITE/_api/web/lists(LISTGUID)/fields/getByInternalNameOrTitle(fieldInternalName)
  • https://SITE/sites/SITENAME/_api/web/lists/GetByTitle(LIBRARYNAME)/fields/getByInternalNameOrTitle(Category)

TypeScript Code Example

import * as React from 'react';
import axios from 'axios';

export const getChoiceField = (siteURL:string, list:string, field:string):Promise<any> => {
    const restQuery:string = `${siteURL}/_api/web/lists/GetByTitle('${list}')/fields/getByInternalNameOrTitle('${field}')`;
    return axios({method: 'get', url: restQuery, responseType: 'json'})
    .then(response =>{
        return response.data.value;
    });
}

export default getChoiceField;