我对cakePHP有疑问。我在视图中创建了两个下拉列表。当用户更改一个列表中的值时,我希望第二个更改。目前,我的工作方式如下:当用户从列表框中选择一个时,会触发点击事件。这会触发一个jQuery ajax函数,该函数从我的控制器调用一个函数。这一切都运行正常,但我如何异步(或,查看)重新渲染我的控件?我知道我可以将数组序列化为json,然后在javascript中重新创建控件,但似乎应该有更多的“CakePHP”方式。这不是渲染的意义吗?任何帮助都会很棒。这是我到目前为止的代码:
jQuery的:
function changeRole(getId){
$.ajax({
type: 'POST',
url: 'ResponsibilitiesRoles/getCurrentResp',
data: { roleId: getId },
cache: false,
dataType: 'HTML',
beforeSend: function(){
},
success: function (html){
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
}
});
查看:
<?php
echo 'Roles:';
echo'<select name="myOptions" multiple="multiple">';
foreach ($rolesResponsibility as $role) {
echo' <option onclick="changeRole(this.value);" value="'; echo $role["ResponsibilitiesRole"]["role_id"]; echo '">'; echo $role["r"]["role_name"]; echo '</option>';
}
echo '</select>';
echo 'Responsbility:';
echo'<select name="myOptionsResp" multiple="multiple">';
foreach ($respResponsibility as $responsibility) {
echo' <option value="'; echo $responsibility["responsibility"]["id"]; echo '">'; echo $responsibility["responsibility"]["responsibility_name"]; echo '</option>';
}
echo '</select>';
?>
控制器功能:
public function getCurrentResp(){ $ getId = $ this-&gt; request-&gt; data ['roleId'];
$responsibilityResp = $this->ResponsibilitiesRole->find('all',
array("fields" => array('role.role_name','ResponsibilitiesRole.role_id','responsibility.*'),'joins' => array(
array(
'table' => 'responsibilities',
'alias' => 'responsibility',
'type' => 'left',
'foreignKey' => false,
'conditions'=> array('ResponsibilitiesRole.responsibility_id = responsibility.id')
),
array(
'table' => 'roles',
'alias' => 'role',
'type' => 'left',
'foreignKey' => false,
'conditions'=> array('ResponsibilitiesRole.role_id = role.id')
)
),
'conditions' => array ('ResponsibilitiesRole.role_id' => $getId),
));
$this->set('respResponsibility', $responsibilityResp);
//do something here to cause the control to be rendered, without have to refresh the whole page
}
答案 0 :(得分:1)
因为你的代码有点混乱我会做一个简单的例子:
Country hasMany City
User belongsTo Country
User belongsTo City
ModelName/TableName (fields)
Country/countries (id, name, ....)
City/cities (id, country_id, name, ....)
User/users (id, country_id, city_id, name, ....)
查看/用户/ add.ctp
<?php
echo $this->Form->create('User');
echo $this->Form->input('country_id');
echo $this->Form->input('city_id');
echo $this->Form->input('name');
echo $this->Form->end('Submit');
$this->Js->get('#UserCountryId')->event('change',
$this->Js->request(
array('controller' => 'countries', 'action' => 'get_cities'),
array(
'update' => '#UserCityId',
'async' => true,
'type' => 'json',
'dataExpression' => true,
'evalScripts' => true,
'data' => $this->Js->serializeForm(array('isForm' => false, 'inline' => true)),
)
)
);
echo $this->Js->writeBuffer();
&GT;
UsersController.php / add:
public function add(){
...
...
// populate selects with options
$this->set('countries', $this->User->Country->find('list'));
$this->set('cities', $this->User->City->find('list'));
}
CountriesController.php / get_cities:
public function get_cities(){
Configure::write('debug', 0);
$cities = array();
if(isset($this->request->query['data']['User']['country_id'])){
$cities = $this->Country->City->find('list', array(
'conditions' => array('City.country_id' => $this->request->query['data']['User']['country_id'])
));
}
$this->set('cities', $cities);
}
查看/ Cities / get_cities.ctp:
<?php
if(!empty($cities)){
foreach ($cities as $id => $name) {
?>
<option value="<?php echo $id; ?>"><?php echo $name; ?></option>
<?php
}
}
?>