<%= select_tag :province, options_for_select(provinces, province) , prompt: '--省份--', class: ['city-select', 'city-province'] %> <%= select_tag :city , options_for_select(cities, city) , prompt: '--城市--', class: ['city-select', 'city-city'] %> <%= select_tag :district, options_for_select(districtes, district), prompt: '--地区--', class: ['city-select', 'city-district'] %> <%= select_tag :streets , options_for_select(streets, street) , prompt: '--街道--', class: ['city-select', 'city-street'] %>