<div>
<label for="form-field-select-3">State : </label>
<br />
<select class="chosen-select form-control" id="State" name="State" data-placeholder="Choose a State...">
<option value="0"> </option>
<?php
$query=$this->db->query("select Address_State from ref_address_state where Address_State_ID='".$property->State_ID."'");
$query=$query->row();
foreach($Address_State as $rows)
{
if($rows['Address_State']==$query->Address_State)
{
echo "<option value='".$rows['Address_State_ID']."' selected>".$rows['Address_State']."</option>";
}
else
{
echo "<option value='".$rows['Address_State_ID']."'>".$rows['Address_State']."</option>";
}
}
?>
</select>
</div>
<div>
<label for="form-field-select-3">City : </label>
<br />
<select class="chosen-select form-control" id="City" name="City" data-placeholder="Choose a City...">
<option value="0"> </option>
<?php
$query=$this->db->query("select city_name from ref_city where city_id='".$property->City."'");
$query=$query->row();
foreach($city_name as $rows)
{
if($rows['city_name']==$query->city_name)
{
echo "<option value='".$rows['city_id']."' selected>".$rows['city_name']."</option>";
}
else
{
echo "<option value='".$rows['city_id']."'>".$rows['city_name']."</option>";
}
}
?>
</select>
</div>
<div>
<label for="form-field-select-3">Locality : </label>
<br />
<select class="chosen-select form-control" id="Locality" name="Locality" data-placeholder="Choose a Location...">
<option value="0"> </option>
<?php
$query=$this->db->query("select locality_name from ref_locality where locality_id='".$property->Locality."'");
$query=$query->row();
foreach($locality_name as $rows)
{
if($rows['locality_name']==$query->locality_name)
{
echo "<option value='".$rows['locality_id']."' selected>".$rows['locality_name']."</option>";
}
else
{
echo "<option value='".$rows['locality_id']."'>".$rows['locality_name']."</option>";
}
}
?>
</select>
</div>
</div>
</div>
</div>
</div>
答案 0 :(得分：1)
我想你想要这样的东西
http://www.91weblessons.com/codeigniter-ajax-country-state-city-drop-down/
的javascript：
<script>
function selectState(country_id)//on change of country select box
{
if(country_id!="-1"){
loadData('state',country_id);
$("#city_dropdown").html("<option value='-1'>Select city</option>");
}else{
$("#state_dropdown").html("<option value='-1'>Select state</option>");
$("#city_dropdown").html("<option value='-1'>Select city</option>");
}
}
function selectCity(state_id)//on change of state select box
{
if(state_id!="-1"){
loadData('city',state_id);
}else{
$("#city_dropdown").html("<option value='-1'>Select city</option>");
}
}
function loadData(loadType,loadId){
var dataString = 'loadType='+ loadType +'&loadId='+ loadId;
$("#"+loadType+"_loader").show();
$("#"+loadType+"_loader").fadeIn(400).html('Please wait... <img src="image/loading.gif" />');
$.ajax({
type: "POST",
url: "loadData",
data: dataString,
cache: false,
success: function(result){
$("#"+loadType+"_loader").hide();
$("#"+loadType+"_dropdown").html("<option value='-1'>Select "+loadType+"</option>");
$("#"+loadType+"_dropdown").append(result);
}
});
}
</script>
控制器：
<?php
public function index()
{
$this->load->model('model');
$result['list']=$this->model->getCountry();
$this->load->view('top');
$this->load->view('index',$result);
$this->load->view('footer');
}
public function loadData()
{
$loadType=$_POST['loadType'];
$loadId=$_POST['loadId'];
$this->load->model('model');
$result=$this->model->getData($loadType,$loadId);
$HTML="";
if($result->num_rows() > 0){
foreach($result->result() as $list){
$HTML.="<option value='".$list->id."'>".$list->name."</option>";
}
}
echo $HTML;
}
?>
模型：
<?php
function getCountry()
{
$this->db->select('id,country_name');
$this->db->from('country');
$this->db->order_by('country_name', 'asc');
$query=$this->db->get();
return $query;
}
function getData($loadType,$loadId)
{
if($loadType=="state"){
$fieldList='id,state_name as name';
$table='state';
$fieldName='country_id';
$orderByField='state_name';
}else{
$fieldList='id,city_name as name';
$table='city';
$fieldName='state_id';
$orderByField='city_name';
}
$this->db->select($fieldList);
$this->db->from($table);
$this->db->where($fieldName, $loadId);
$this->db->order_by($orderByField, 'asc');
$query=$this->db->get();
return $query;
}
?>