Convert object to django filter query params

objectToQueryParams.js

function objectToQueryParams (obj) {
    var params = '?';
    var objectKeys = Object.keys(obj);
    var objectLastItem = objectKeys.length - 1;
    objectKeys.forEach(function(key, index) {
      var currentValue = obj[key];
      if (
        typeof currentValue  === 'object' &&
        currentValue.length
      ) {
        var arrayLastItem = currentValue.length - 1;
        currentValue.forEach(function(arrayItem, arrayIndex) {
          params = params + key + '=' + arrayItem;
          if (arrayLastItem > arrayIndex) {
            params = params + '&';
          }
        });
      } else {
        params = params + key + '=' + currentValue;
      }
      if (objectLastItem > index) {
        params = params + '&';
      }
    });
    return params;
  }