以下是我修改扩展以在每页启用多个字段的方法：
新的 EJuiAutoCompleteFkField.php
<?php
/*
* EJuiAutoCompleteFkField class file
*
* @author Jeremy Dunn <jeremy.j.dunn@gmail.com>
* @link http://www.yiiframework.com/
* @version 1.5
*/
Yii::import('zii.widgets.jui.CJuiAutoComplete');
class EJuiAutoCompleteFkField extends CJuiAutoComplete {
/**
* @var boolean whether to show the FK field.
*/
public $showFKField = false;
/**
* @var integer length of the FK field if visible
*/
public $FKFieldSize = 10;
/**
* @var string the relation name to the FK table
*/
public $relName;
/**
* @var string the relation name to the FK table
*/
public $idSuffix;
/**
* @var string extension to append to id fields for uniqneness
*/
public $displayAttr;
/**
* @var integer width of the AutoComplete field
*/
public $autoCompleteLength = 50;
/**
* @var string the ID of the FK field
*/
private $_fieldID;
/**
* @var string the ID of the hidden field to save the display value
*/
private $_saveID;
/**
* @var string the ID of the AutoComplete field
*/
private $_lookupID;
/**
* @var string the ID for the hidden field
*/
private $_hiddenID;
/**
* @var string the initial display value
*/
private $_display;
/**
* @var string name of the lookup field
*/
private $_name;
public function init() {
parent::init(); // ensure necessary assets are loaded
// JJD 8/3/11 make EJuiAutoCompleteFkField work for child rows where attribute like [$i]FieldName
// get the ID which will be created for the actual field when it is rendered.
// don't let resolveNameID() change $this->attribute which is needed to generate the actual field
$attr = $this->attribute;
$tempHtmlOpts = array();
CHtml::resolveNameID($this->model, $attr, $tempHtmlOpts);
$id = $tempHtmlOpts['id'].'_'.$this->idSuffix;
$this->_fieldID = $id;
$this->_saveID = $id . '_save';
$this->_lookupID = $id .'_lookup';
$this->_hiddenID = $id .'_hidden';
$this->_name = $tempHtmlOpts['id'].'_lookup';
$related = $this->model->{$this->relName}; // get the related record
$value = CHtml::resolveValue($this->model, $this->attribute);
$this->_display=(!empty($value) ? $related->{$this->displayAttr} : '');
if (!isset($this->options['minLength']))
$this->options['minLength'] = 2;
if (!isset($this->options['maxHeight']))
$this->options['maxHeight']='100';
$this->htmlOptions['size'] = $this->autoCompleteLength;
// fix problem with Chrome 10 validating maxLength for the auto-complete field
$this->htmlOptions['maxlength'] = $this->autoCompleteLength;
// setup javascript to do the work
$this->options['create']="js:function(event, ui){\$(this).val('".addslashes($this->_display)."');}"; // show initial display value
// after user picks from list, save the ID in model/attr field, and Value in _save field for redisplay
$this->options['select']="js:function(event, ui){\$('#".$this->_fieldID."').val(ui.item.id);\$('#".$this->_saveID."').val(ui.item.value);}";
// when the autoComplete field loses focus, refresh the field with current value of _save
// this is either the previous value if user didn't pick anything; or the new value if they did
// $this->htmlOptions['onblur']="$(this).val($('#".$this->_saveID."').val());";
}
public function run() {
// first render the FK field. This is the actual data field, populated by autocomplete.select()
if ($this->showFKField) {
echo CHtml::activeTextField($this->model, $this->attribute, array('size'=>$this->FKFieldSize, 'readonly'=>'readonly'));
} else {
echo CHtml::activeHiddenField($this->model,$this->attribute, array('id'=>$this->_hiddenID));
}
// second, the hidden field used to refresh the display value
echo CHtml::hiddenField($this->_saveID,$this->_display, array('id'=>$this->_saveID));
// third, the autoComplete field itself
$this->htmlOptions['id'] = $this->_lookupID;
$this->htmlOptions['name'] = $this->_name;
parent::run();
// fouth, an image button to empty all three fields
/*
$label=Yii::t('DR','Remove '). ucfirst($this->relName); // TODO: how to translate relname?
$deleteImageURL = '/images/text_field_remove.png';
echo CHtml::image($deleteImageURL, $label,
array('title'=>$label,
'name' => 'remove'.$this->_fieldID,
'style'=>'margin-left:6px;',
// JJD 4/27/12 #1350 trigger onchange event for display field, in case there's an event attached (e.g. unsaved-changes-warning)
'onclick'=>"$('#".$this->_fieldID."').val('').trigger('change');$('#".$this->_saveID."').val('');$('#".$this->_lookupID."').val('');",
)
);
*
*/
}
}
?>
以及视图中的用法：
<?php
$this->widget('EJuiAutoCompleteFkField', array(
'model'=>$smpCancerDefault,
'attribute'=>'cancer_id', //the FK field (from CJuiInputWidget)
'sourceUrl'=>Yii::app()->createUrl('/samples/cancerAutoComplete'),
'showFKField'=>false,
'FKFieldSize'=>10,
'relName'=>'cancer', // the relation name defined above
'displayAttr'=>'CancerName', // attribute or pseudo-attribute to display
'autoCompleteLength'=>50,
'idSuffix'=>"myUniqueSuffix", // added this var to allow for unique field ids
'options'=>array(
'minLength'=>3,
),
));
?>