$.fn.storeAutocomplete = function() {

this.select2({
  minimumInputLength: 1,
  multiple: true,
  initSelection: function(element, callback) {
    $.get(Spree.routes.store_search, { ids: element.val() }, function(data) {
      callback(data)
    })
  },
  ajax: {
    url: Spree.routes.store_search,
    datatype: 'json',
    data: function(term, page) {
      return { q: term }
    },
    results: function(data, page) {
      return { results: data }
    }
  },
  formatResult: function(store) {
    return store.name;
  },
  formatSelection: function(store) {
    return store.name;
  },
  id: function(store) {
    return store.id
  }
});

}