rails实现省市级联
页面代码如下：省份列表框：
<%=@resources=Province.find :all ,:conditions=>"resource_level=1" @provices<<Province.new(:id=>0,:resource_name=>"--请选择省份--") collection_select(:move,"id",@resources,:id,:resource_name,{},:onchange =>"change('move_id','move_city_id')") %>
市列表框：
<select id="move_city_id" name="city"> <option value="" selected="selected">--请选择市--</option></select>
js：
//ajax联动，需要传递两个列表框id function change(levelone_id,leveltwo_id) { new Ajax.Request( '/manage/ajax_find_leveltwo/'+$(levelone_id).value, { method: 'get', requestHeaders:{Accept:'application/json'}, onComplete: function showResponse(transport) { var json = eval(transport.responseText); $(leveltwo_id).options.length=1; for(var i=0;i<json.length;i++) { var oNewNode=new Option(); oNewNode.value=json.city.id; oNewNode.text=json.resource.resource_name; $(leveltwo_id).options.add(oNewNode); } }, asynchronous:true, evalScripts:true }); }
action中代码如下：
def ajax_find_leveltwo @citys=City.find :all,:conditions=>"parent_id=#{params[:id]} " render :text => @citys.to_jsonend
页:
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