php 重写分页器 CLinkPager的实例

发布:smiling　来源: PHP粉丝网　添加日期：2021-08-17 10:38:04　浏览: 评论：0　

这篇文章主要介绍了php 重写分页器 CLinkPager的实例的相关资料,希望通过本文能帮助到大家，让大家实现这样的功能，需要的朋友可以参考下

1、自定义的分页器类放在哪里？

有两个位置可以放，

第一种是放在 protected/extensions 中，在使用是import进来，或在config文件中import进来；

第二种是放在 protected/components 中，作为组件存在，不需要import

2、用派生方式是最好的

class MyPager extends CLinkPager

入口函数是：public function run() ，当显示分页器时run()被调用，里面的输出就会显示在相应位置；

其他的完全自定义，如果你不知道上一页、下一页、首页、尾页、总页数、当前页码等信息，可以参考CLinkPager的源码，yii/frameworks/web/widgets/pagers/CLinkPager.php

<?php

class MyPager extends CLinkPager

{

 const CSS_FIRST_PAGE='first';

 const CSS_LAST_PAGE='last';

 const CSS_PREVIOUS_PAGE='previous';

 const CSS_NEXT_PAGE='next';

 const CSS_INTERNAL_PAGE='page';

 const CSS_HIDDEN_PAGE='hidden';

 const CSS_SELECTED_PAGE='selected';

 /**

 * @var string the CSS class for the first page button. Defaults to 'first'.

 * @since 1.1.11

 */

 public $firstPageCssClass=self::CSS_FIRST_PAGE;

 /**

 * @var string the CSS class for the last page button. Defaults to 'last'.

 * @since 1.1.11

 */

 public $lastPageCssClass=self::CSS_LAST_PAGE;

 /**

 * @var string the CSS class for the previous page button. Defaults to 'previous'.

 * @since 1.1.11

 */

 public $previousPageCssClass=self::CSS_PREVIOUS_PAGE;

 /**

 * @var string the CSS class for the next page button. Defaults to 'next'.

 * @since 1.1.11

 */

 public $nextPageCssClass=self::CSS_NEXT_PAGE;

 /**

 * @var string the CSS class for the internal page buttons. Defaults to 'page'.

 * @since 1.1.11

 */

 public $internalPageCssClass=self::CSS_INTERNAL_PAGE;

 /**

 * @var string the CSS class for the hidden page buttons. Defaults to 'hidden'.

 * @since 1.1.11

 */

 public $hiddenPageCssClass=self::CSS_HIDDEN_PAGE;

 /**

 * @var string the CSS class for the selected page buttons. Defaults to 'selected'.

 * @since 1.1.11

 */

 public $selectedPageCssClass=self::CSS_SELECTED_PAGE;

 /**

 * @var integer maximum number of page buttons that can be displayed. Defaults to 10.

 */

 public $maxButtonCount=10;

 /**

 * @var string the text label for the next page button. Defaults to 'Next >'.

 */

 public $nextPageLabel;

 /**

 * @var string the text label for the previous page button. Defaults to '< Previous'.

 */

 public $prevPageLabel;

 /**

 * @var string the text label for the first page button. Defaults to '<< First'.

 */

 public $firstPageLabel;

 /**

 * @var string the text label for the last page button. Defaults to 'Last >>'.

 */

 public $lastPageLabel;

 /**

 * @var string the text shown before page buttons. Defaults to 'Go to page: '.

 */

 public $header;

 /**

 * @var string the text shown after page buttons.

 */

 public $footer='';

 /**

 * @var mixed the CSS file used for the widget. Defaults to null, meaning

 * using the default CSS file included together with the widget.

 * If false, no CSS file will be used. Otherwise, the specified CSS file

 * will be included when using this widget.

 */

 public $cssFile;

 /**

 * @var array HTML attributes for the pager container tag.

 */

 public $htmlOptions=array();

 /**

 * Initializes the pager by setting some default property values.

 */

 public function init()

 {

 if($this->nextPageLabel===null)

 $this->nextPageLabel=Yii::t('yii','Next >');

 if($this->prevPageLabel===null)

 $this->prevPageLabel=Yii::t('yii','< Previous');

 //if($this->firstPageLabel===null)

 // $this->firstPageLabel=Yii::t('yii','<< First');

 //if($this->lastPageLabel===null)

 // $this->lastPageLabel=Yii::t('yii','Last >>');

 if($this->header===null)

 $this->header=Yii::t('yii','Go to page: ');

 if(!isset($this->htmlOptions['id']))

 $this->htmlOptions['id']=$this->getId();

 if(!isset($this->htmlOptions['class']))

 $this->htmlOptions['class']='yiiPager';

 }

 /**

 * Executes the widget.

 * This overrides the parent implementation by displaying the generated page buttons.

 */

 public function run()

 {

 $this->registerClientScript();

 $buttons=$this->createPageButtons();

 if(emptyempty($buttons))

 return;

 echo $this->header;

// echo CHtml::tag('ul',$this->htmlOptions,implode("\n",$buttons));

 echo implode("\n",$buttons);

 echo $this->footer;

 }

 /**

 * Creates the page buttons.

 * @return array a list of page buttons (in HTML code).

 */

 protected function createPageButtons()

 {

 if(($pageCount=$this->getPageCount())<=1)

 return array();

 list($beginPage,$endPage,$ellipsis)=$this->getPageRange();

 $currentPage=$this->getCurrentPage(false); // currentPage is calculated in getPageRange()

 $buttons=array();

 // first page

 //$buttons[]=$this->createPageButton($this->firstPageLabel,0,$this->firstPageCssClass,$currentPage<=0,false);

 // prev page

 if(($page=$currentPage-1)<0)

 $page=0;

 if($currentPage == 0){

 $buttons[] = "<上一頁";

 }else{

 $buttons[]=$this->createPageButton($this->prevPageLabel,$page,$this->previousPageCssClass,$currentPage<=0,false);

 }

 // internal pages start

 // first

 $buttons[]=$this->createPageButton(1,0,$this->internalPageCssClass,false,$i==$currentPage);

 //middle

 if($ellipsis == 'both'){

 $buttons[] = "...";

 }

 for($i=$beginPage;$i<=$endPage;++$i){

 if($ellipsis == 'left' && $i == $beginPage){

 $buttons[] = "...";

 }

 $buttons[]=$this->createPageButton($i+1,$i,$this->internalPageCssClass,false,$i==$currentPage);

 if($ellipsis == 'right' && $i == $endPage){

 $buttons[] = "...";

 }

 }

 if($ellipsis == 'both'){

 $buttons[] = "...";

 }

 // last

 $buttons[]=$this->createPageButton($pageCount,$pageCount - 1,$this->internalPageCssClass,false,$i==$currentPage);

 // internal pages end

 // next page

 if(($page=$currentPage+1)>=$pageCount-1)

 $page=$pageCount-1;

 if($currentPage == ($pageCount-1)){

 $buttons[] = "下一頁>";

 }else{

 $buttons[]=$this->createPageButton($this->nextPageLabel,$page,$this->nextPageCssClass,$currentPage>=$pageCount-1,false);

 }

 // last page

 //$buttons[]=$this->createPageButton($this->lastPageLabel,$pageCount-1,$this->lastPageCssClass,$currentPage>=$pageCount-1,false);

 return $buttons;

 }

 /**

 * Creates a page button.

 * You may override this method to customize the page buttons.

 * @param string $label the text label for the button

 * @param integer $page the page number

 * @param string $class the CSS class for the page button.

 * @param boolean $hidden whether this page button is visible

 * @param boolean $selected whether this page button is selected

 * @return string the generated button

 */

 protected function createPageButton($label,$page,$class,$hidden,$selected)

 {

 if($hidden || $selected)

 $class.=' '.($hidden ? $this->hiddenPageCssClass : $this->selectedPageCssClass);

 if ($selected) {

 $result = "" . ++$page . "";

 } else {

 $result = CHtml::link($label,$this->createPageUrl($page));

 }

 return $result;

 }

 /**

 * @return array the begin and end pages that need to be displayed.

 */

 protected function getPageRange()

 {

 $currentPage=$this->getCurrentPage();

 $pageCount=$this->getPageCount();

 /*$beginPage=max(0, $currentPage-(int)($this->maxButtonCount/2));

 if(($endPage=$beginPage+$this->maxButtonCount-1)>=$pageCount)

 {

 $endPage=$pageCount-1;

 $beginPage=max(0,$endPage-$this->maxButtonCount+1);

 }*/

 if($pageCount > $this->maxButtonCount){

 if($currentPage > 4 && $currentPage < ($pageCount - 4)){

 // print_r('a');

 $beginPage = $currentPage - 2;

 $endPage = $currentPage + 2;

 $ellipsis = 'both';

 }else{

 $beginPage=max(1, $currentPage-(int)($this->maxButtonCount/2));

 if($beginPage == 1){

 $ellipsis = 'right';

 }else{

 $ellipsis = 'left';

 }

 if(($endPage=$beginPage+$this->maxButtonCount-1)>=$pageCount)

 {

 // print_r('b');

 $endPage=$pageCount-2;

 $beginPage=max(1,$endPage-$this->maxButtonCount+1);

 }elseif(($endPage=$beginPage+$this->maxButtonCount-1)>=$pageCount-2){

 // print_r('c');

 $endPage=$pageCount-2;

 }

 }

 }else{

 $beginPage=max(1, $currentPage-(int)($this->maxButtonCount/2));

 if(($endPage=$beginPage+$this->maxButtonCount-1)>=$pageCount)

 {

 $endPage=$pageCount-2;

 $beginPage=max(1,$endPage-$this->maxButtonCount+1);

 }

 }

 return array($beginPage,$endPage, $ellipsis);

 }

 /**

 * Registers the needed client scripts (mainly CSS file).

 */

 public function registerClientScript()

 {

 if($this->cssFile!==false)

 self::registerCssFile($this->cssFile);

 }

 /**

 * Registers the needed CSS file.

 * @param string $url the CSS URL. If null, a default CSS URL will be used.

 */

 public static function registerCssFile($url=null)

 {

 if($url===null)

 $url=CHtml::asset(Yii::getPathOfAlias('system.web.widgets.pagers.pager').'.css');

 Yii::app()->getClientScript()->registerCssFile($url);

 }

}

3、调用方式

在View里的相应widget，定义pager的class为自定义的分页器类名即可，参考：

$this->widget('zii.widgets.CListView', array(

  'dataProvider'=>$dataProvider,

  'itemView'=>'_view_t',

  'pager'=>array(

  'class'=>'MyPager',

)

));