CListView
Package | zii.widgets |
---|---|
Inheritance | class CListView » CBaseListView » CWidget » CBaseController » CComponent |
Since | 1.1 |
Version | $Id: CListView.php 3286 2011-06-16 17:34:34Z qiang.xue $ |
Source Code | framework/zii/widgets/CListView.php |
Unlike CGridView which displays the data items in a table, CListView allows one to use a view template to render each data item. As a result, CListView could generate more flexible rendering result.
CListView supports both sorting and pagination of the data items. The sorting and pagination can be done in AJAX mode or normal page request. A benefit of using CListView is that when the user browser disables JavaScript, the sorting and pagination automatically degenerate to normal page requests and are still functioning as expected.
CListView should be used together with a data provider, preferrably a CActiveDataProvider.
The minimal code needed to use CListView is as follows:
$dataProvider=new CActiveDataProvider('Post'); $this->widget('zii.widgets.CListView', array( 'dataProvider'=>$dataProvider, 'itemView'=>'_post', // refers to the partial view named '_post' 'sortableAttributes'=>array( 'title', 'create_time'=>'Post Time', ), ));
The above code first creates a data provider for the
Post
ActiveRecord class.
It then uses CListView to display every data item as returned by the data provider.
The display is done via the partial view named '_post'. This partial view will be rendered
once for every data item. In the view, one can access the current data item via variable $data
.
For more details, see itemView.
In order to support sorting, one has to specify the sortableAttributes property. By doing so, a list of hyperlinks that can sort the data will be displayed.
Public Properties
Property | Type | Description | Defined By |
---|---|---|---|
actionPrefix | string | the prefix to the IDs of the actions. | CWidget |
afterAjaxUpdate | string | a javascript function that will be invoked after a successful AJAX response is received. | CListView |
ajaxUpdate | mixed | the ID of the container whose content may be updated with an AJAX response. | CListView |
ajaxUrl | mixed | the URL for the AJAX requests should be sent to. | CListView |
ajaxVar | string | the name of the GET variable that indicates the request is an AJAX request triggered by this widget. | CListView |
baseScriptUrl | string | the base script URL for all list view resources (e. | CListView |
beforeAjaxUpdate | string | a javascript function that will be invoked before an AJAX update occurs. | CListView |
controller | CController | Returns the controller that this widget belongs to. | CWidget |
cssFile | string | the URL of the CSS file used by this list view. | CListView |
dataProvider | IDataProvider | the data provider for the view. | CBaseListView |
emptyText | string | the message to be displayed when dataProvider does not have any data. | CBaseListView |
enablePagination | boolean | whether to enable pagination. | CBaseListView |
enableSorting | boolean | whether to enable sorting. | CBaseListView |
htmlOptions | array | the HTML options for the view container tag. | CBaseListView |
id | string | Returns the ID of the widget or generates a new one if requested. | CWidget |
itemView | string | the view used for rendering each data item. | CListView |
itemsCssClass | string | the CSS class name for the container of all data item display. | CBaseListView |
itemsTagName | string | the HTML tag name for the container of all data item display. | CListView |
loadingCssClass | string | the CSS class name that will be assigned to the widget container element when the widget is updating its content via AJAX. | CListView |
owner | CBaseController | Returns the owner/creator of this widget. | CWidget |
pager | array | the configuration for the pager. | CBaseListView |
pagerCssClass | string | the CSS class name for the pager container. | CBaseListView |
separator | string | the HTML code to be displayed between any two consecutive items. | CListView |
skin | mixed | the name of the skin to be used by this widget. | CWidget |
sortableAttributes | array | list of sortable attribute names. | CListView |
sorterCssClass | string | the CSS class name for the sorter container. | CListView |
sorterFooter | string | the text shown after sort links. | CListView |
sorterHeader | string | the text shown before sort links. | CListView |
summaryCssClass | string | the CSS class name for the summary text container. | CBaseListView |
summaryText | string | the summary text template for the view. | CBaseListView |
tagName | string | the tag name for the view container. | CBaseListView |
template | string | the template to be used to control the layout of various components in the list view. | CListView |
updateSelector | string | the jQuery selector of the HTML elements that may trigger AJAX updates when they are clicked. | CListView |
viewData | array | additional data to be passed to itemView when rendering each data item. | CListView |
viewPath | string | Returns the directory containing the view files for this widget. | CWidget |
Public Methods
Method | Description | Defined By |
---|---|---|
__call() | Calls the named method which is not a class method. | CComponent |
__construct() | Constructor. | CWidget |
__get() | Returns a property value, an event handler list or a behavior based on its name. | CComponent |
__isset() | Checks if a property value is null. | CComponent |
__set() | Sets value of a component property. | CComponent |
__unset() | Sets a component property to be null. | CComponent |
actions() | Returns a list of actions that are used by this widget. | CWidget |
asa() | Returns the named behavior object. | CComponent |
attachBehavior() | Attaches a behavior to this component. | CComponent |
attachBehaviors() | Attaches a list of behaviors to the component. | CComponent |
attachEventHandler() | Attaches an event handler to an event. | CComponent |
beginCache() | Begins fragment caching. | CBaseController |
beginClip() | Begins recording a clip. | CBaseController |
beginContent() | Begins the rendering of content that is to be decorated by the specified view. | CBaseController |
beginWidget() | Creates a widget and executes it. | CBaseController |
canGetProperty() | Determines whether a property can be read. | CComponent |
canSetProperty() | Determines whether a property can be set. | CComponent |
createWidget() | Creates a widget and initializes it. | CBaseController |
detachBehavior() | Detaches a behavior from the component. | CComponent |
detachBehaviors() | Detaches all behaviors from the component. | CComponent |
detachEventHandler() | Detaches an existing event handler. | CComponent |
disableBehavior() | Disables an attached behavior. | CComponent |
disableBehaviors() | Disables all behaviors attached to this component. | CComponent |
enableBehavior() | Enables an attached behavior. | CComponent |
enableBehaviors() | Enables all behaviors attached to this component. | CComponent |
endCache() | Ends fragment caching. | CBaseController |
endClip() | Ends recording a clip. | CBaseController |
endContent() | Ends the rendering of content. | CBaseController |
endWidget() | Ends the execution of the named widget. | CBaseController |
evaluateExpression() | Evaluates a PHP expression or callback under the context of this component. | CComponent |
getController() | Returns the controller that this widget belongs to. | CWidget |
getEventHandlers() | Returns the list of attached event handlers for an event. | CComponent |
getId() | Returns the ID of the widget or generates a new one if requested. | CWidget |
getOwner() | Returns the owner/creator of this widget. | CWidget |
getViewFile() | Looks for the view script file according to the view name. | CWidget |
getViewPath() | Returns the directory containing the view files for this widget. | CWidget |
hasEvent() | Determines whether an event is defined. | CComponent |
hasEventHandler() | Checks whether the named event has attached handlers. | CComponent |
hasProperty() | Determines whether a property is defined. | CComponent |
init() | Initializes the list view. | CListView |
raiseEvent() | Raises an event. | CComponent |
registerClientScript() | Registers necessary client scripts. | CListView |
render() | Renders a view. | CWidget |
renderContent() | Renders the main content of the view. | CBaseListView |
renderEmptyText() | Renders the empty message when there is no data. | CBaseListView |
renderFile() | Renders a view file. | CBaseController |
renderInternal() | Renders a view file. | CBaseController |
renderItems() | Renders the data item list. | CListView |
renderKeys() | Renders the key values of the data in a hidden tag. | CBaseListView |
renderPager() | Renders the pager. | CBaseListView |
renderSorter() | Renders the sorter. | CListView |
renderSummary() | Renders the summary text. | CBaseListView |
run() | Renders the view. | CBaseListView |
setId() | Sets the ID of the widget. | CWidget |
widget() | Creates a widget and executes it. | CBaseController |
Protected Methods
Method | Description | Defined By |
---|---|---|
renderSection() | Renders a section. | CBaseListView |
Property Details
a javascript function that will be invoked after a successful AJAX response is received.
The function signature is function(id, data)
where 'id' refers to the ID of the list view
'data' the received ajax response data.
the ID of the container whose content may be updated with an AJAX response. Defaults to null, meaning the container for this list view instance. If it is set false, it means sorting and pagination will be performed in normal page requests instead of AJAX requests. If the sorting and pagination should trigger the update of multiple containers' content in AJAX fashion, these container IDs may be listed here (separated with comma).
the URL for the AJAX requests should be sent to. CHtml::normalizeUrl() will be called on this property. If not set, the current page URL will be used for AJAX requests.
the name of the GET variable that indicates the request is an AJAX request triggered by this widget. Defaults to 'ajax'. This is effective only when ajaxUpdate is not false.
the base script URL for all list view resources (e.g. javascript, CSS file, images). Defaults to null, meaning using the integrated list view resources (which are published as assets).
a javascript function that will be invoked before an AJAX update occurs.
The function signature is function(id)
where 'id' refers to the ID of the list view.
the URL of the CSS file used by this list view. Defaults to null, meaning using the integrated CSS file. If this is set false, you are responsible to explicitly include the necessary CSS file in your page.
the view used for rendering each data item. This property value will be passed as the first parameter to either CController::renderPartial or CWidget::render to render each data item. In the corresponding view template, the following variables can be used in addition to those declared in viewData:
$this
: refers to the owner of this list view widget. For example, if the widget is in the view of a controller, then$this
refers to the controller.$data
: refers to the data item currently being rendered.$index
: refers to the zero-based index of the data item currently being rendered.$widget
: refers to this list view widget instance.
the HTML tag name for the container of all data item display. Defaults to 'div'.
the CSS class name that will be assigned to the widget container element when the widget is updating its content via AJAX. Defaults to 'list-view-loading'.
the HTML code to be displayed between any two consecutive items.
list of sortable attribute names. In order for an attribute to be sortable, it must also appear as a sortable attribute in the IDataProvider::sort property of dataProvider.
See Also
the CSS class name for the sorter container. Defaults to 'sorter'.
the text shown after sort links. Defaults to empty.
the text shown before sort links. Defaults to 'Sort by: '.
the template to be used to control the layout of various components in the list view. These tokens are recognized: {summary}, {sorter}, {items} and {pager}. They will be replaced with the summary text, the sort links, the data item list, and the pager.
the jQuery selector of the HTML elements that may trigger AJAX updates when they are clicked. If not set, the pagination links and the sorting links will trigger AJAX updates.
additional data to be passed to itemView when rendering each data item. This array will be extracted into local PHP variables that can be accessed in the itemView.
Method Details
public void init()
|
public function init()
{
if($this->itemView===null)
throw new CException(Yii::t('zii','The property "itemView" cannot be empty.'));
parent::init();
if(!isset($this->htmlOptions['class']))
$this->htmlOptions['class']='list-view';
if($this->baseScriptUrl===null)
$this->baseScriptUrl=Yii::app()->getAssetManager()->publish(Yii::getPathOfAlias('zii.widgets.assets')).'/listview';
if($this->cssFile!==false)
{
if($this->cssFile===null)
$this->cssFile=$this->baseScriptUrl.'/styles.css';
Yii::app()->getClientScript()->registerCssFile($this->cssFile);
}
}
Initializes the list view. This method will initialize required property values and instantiate columns objects.
public void registerClientScript()
|
public function registerClientScript()
{
$id=$this->getId();
if($this->ajaxUpdate===false)
$ajaxUpdate=array();
else
$ajaxUpdate=array_unique(preg_split('/\s*,\s*/',$this->ajaxUpdate.','.$id,-1,PREG_SPLIT_NO_EMPTY));
$options=array(
'ajaxUpdate'=>$ajaxUpdate,
'ajaxVar'=>$this->ajaxVar,
'pagerClass'=>$this->pagerCssClass,
'loadingClass'=>$this->loadingCssClass,
'sorterClass'=>$this->sorterCssClass,
);
if($this->ajaxUrl!==null)
$options['url']=CHtml::normalizeUrl($this->ajaxUrl);
if($this->updateSelector!==null)
$options['updateSelector']=$this->updateSelector;
if($this->beforeAjaxUpdate!==null)
$options['beforeAjaxUpdate']=(strpos($this->beforeAjaxUpdate,'js:')!==0 ? 'js:' : '').$this->beforeAjaxUpdate;
if($this->afterAjaxUpdate!==null)
$options['afterAjaxUpdate']=(strpos($this->afterAjaxUpdate,'js:')!==0 ? 'js:' : '').$this->afterAjaxUpdate;
$options=CJavaScript::encode($options);
$cs=Yii::app()->getClientScript();
$cs->registerCoreScript('jquery');
$cs->registerCoreScript('bbq');
$cs->registerScriptFile($this->baseScriptUrl.'/jquery.yiilistview.js',CClientScript::POS_END);
$cs->registerScript(__CLASS__.'#'.$id,"jQuery('#$id').yiiListView($options);");
}
Registers necessary client scripts.
public void renderItems()
|
public function renderItems()
{
echo CHtml::openTag($this->itemsTagName,array('class'=>$this->itemsCssClass))."\n";
$data=$this->dataProvider->getData();
if(($n=count($data))>0)
{
$owner=$this->getOwner();
$render=$owner instanceof CController ? 'renderPartial' : 'render';
$j=0;
foreach($data as $i=>$item)
{
$data=$this->viewData;
$data['index']=$i;
$data['data']=$item;
$data['widget']=$this;
$owner->$render($this->itemView,$data);
if($j++ < $n-1)
echo $this->separator;
}
}
else
$this->renderEmptyText();
echo CHtml::closeTag($this->itemsTagName);
}
Renders the data item list.
public void renderSorter()
|
public function renderSorter()
{
if($this->dataProvider->getItemCount()<=0 || !$this->enableSorting || empty($this->sortableAttributes))
return;
echo CHtml::openTag('div',array('class'=>$this->sorterCssClass))."\n";
echo $this->sorterHeader===null ? Yii::t('zii','Sort by: ') : $this->sorterHeader;
echo "<ul>\n";
$sort=$this->dataProvider->getSort();
foreach($this->sortableAttributes as $name=>$label)
{
echo "<li>";
if(is_integer($name))
echo $sort->link($label);
else
echo $sort->link($name,$label);
echo "</li>\n";
}
echo "</ul>";
echo $this->sorterFooter;
echo CHtml::closeTag('div');
}
Renders the sorter.