rob.js

$( 'select.multiline' ).each(function($){
  
  var ajax_url = false, minInputLength = 3;
  
  if ( $( this ).data( 'min-input' ) )
  {
    minInputLength = $( this ).data( 'min-input' );
  }
  
  ajax_url = $( this ).data( 'source' ); ?>
  
  if ( !ajax_url ) return false;
  
  $( this ).select2({
		ajax: {
			url: ajax_url,
			dataType: 'json',
			delay: 250,
			data: function (params) {
				return {
					q: params.term, // search term
					page: params.page
				};
			},
			processResults: function (data, params) {
				params.page = params.page || 1;
	
				var selectResultsData = $.map(data.items, function (obj) {
					obj.id = obj.value;
					obj.text = obj.label;
	
					return obj;
				});
	
				return {
					results: selectResultsData,
					pagination: {
						more: (params.page * 30) < data.total_count
					}
				};
			},
			cache: true
		},
		escapeMarkup: function (markup) { return markup; },
		minimumInputLength: minInputLength,
		templateResult: formatContactInfoResults,
		templateSelection: formatContactInfoResultsSelection
	});
  
});