laravel 自定义分页类 灰太狼 2021-11-09 01:56 374阅读 0赞 最近在做ppt内容的管理,要从ES里面取数据,所以在做列表分页的时候不能使用Laravel自带的分页类,所以通过修改源码封装出来的一个自定义分页类,在视图中使用分页类的方法与Laravel自带的分页类的方法是一样的。 1.获取当前页码 $nowPage = $request->get('nowPage'); 2.计算总数据条数 $count = ''; 3.每页的条数 $pageNum = ''; 4.计算总页数 $countPage = ceil($count / $pageNum); 5.调用自定义分页类 $pages = CustomPage::getSelfPageView($nowPage, $countPage, '/user', ''); 介绍一下每个参数 第1个参数:表示当前哪一页,第二参数:总页数,第三参数:页面路由,第四参数:需要维持的参数(比如status=1); 6最后在视图中使用分页类的方法 {!! $pages !!} 调用数据库数据示例: public function home(Request $request){ $nowPage = $request->get('nowPage'); //获取当前页码 $data=DB::table('new_design')->get(); //获取数据 $count=count($data); //计算总条数 $number=3; //每页的条数 $count >12 && $count=12; //控制页数 $size=(int)ceil($count/$number); //计算总页数 $baseUrl ="http://www.pic_mian.com/admin/home?"; //页面url $pages = CustomPage::getSelfPageView($nowPage , $size, $baseUrl); $data=DB::table('new_design')->paginate($number,['*'],'page',$nowPage); return view('admin/layouts/app',['info'=>$data,'pages'=>$pages]); } //自定义分页类 <?php namespace App\Helpers; /** * 自定义分页类,主要用于产生分页试图 * Class Common * @package App\Library */ class CustomPage { /** * @param $text * @return string */ public static function getActivePageWrapper($text) { return '<li><span>' . $text . '</span></li>'; } /** * 获取当前页按钮的页面样式 * @param $url * @param $page * @return string */ public static function getActivePageLinkWrapper($url, $page) { return '<li class="active"><a href="' . $url . '">' . $page . '</a></li>'; } /** * 获取非当前页按钮的页面样式 * @param $url * @param $page * @return string */ public static function getPageLinkWrapper($url, $page) { return '<li><a href="' . $url . '">' . $page . '</a></li>'; } /** * 获取整个的分页样式 * @param $nowPage 当前页 * @param $totalPage 共多少页面 * @param $baseUrl 当前url * @param $search 搜索 * @return string */ public static function getSelfPageView($nowPage, $totalPage, $baseUrl, $search="") { $pagePre = '<ul class="pagination">'; $pageEnd = '</ul>'; $pageLastStr = ''; $pageNextStr = ''; if ($nowPage <= 1) { $nowPage = 1; $pageLastStr = '<li class="disabled"><span>«</span></li>'; } if ($nowPage >= $totalPage) { $nowPage = $totalPage; $pageNextStr = '<li class="disabled"><span>»</span></li>'; } $search = []; $search['totalPage'] = $totalPage; if (empty($pageLastStr)) { $lastPage = $nowPage - 1; $search['nowPage'] = $lastPage; $lastSearchStr = self::arrayToSearchStr($search); $url = $baseUrl . '&' . $lastSearchStr; $pageLastStr = self::getPageLinkWrapper($url, '«'); } if (empty($pageNextStr)) { $pageNext = $nowPage + 1; $search['nowPage'] = $pageNext; $lastSearchStr = self::arrayToSearchStr($search); $url = $baseUrl . '&' . $lastSearchStr; $pageNextStr = self::getPageLinkWrapper($url, '»'); } $pageTemp = ''; $pageRange = self::getPageRange($nowPage, $totalPage); $pageTemp .= $pageLastStr; foreach ($pageRange as $page) { $search['nowPage'] = $page; $searchStr = self::arrayToSearchStr($search); $url = $baseUrl . '&' . $searchStr; if ($page == $nowPage) { $pageTemp .= self::getActivePageLinkWrapper($url, $page); } else { $pageTemp .= self::getPageLinkWrapper($url, $page); } } $pageTemp .= $pageNextStr; $pageView = $pagePre . $pageTemp . $pageEnd; return $pageView; } /** * 获取实际显示页面范围的范围 * @param $nowPage * @param $totalPage * @return array */ public static function getPageRange($nowPage, $totalPage) { $returnArray = []; if ($totalPage <= 8) { for ($i = 1; $i <= $totalPage; $i++) { $returnArray[] = $i; } } else { $lengthLeft = $nowPage - 1; $lengthRight = $totalPage - $nowPage; // 3, 21 if (($lengthLeft < 4) && ($lengthRight < 4)) { $returnArray = []; } elseif (($lengthLeft < 4) && ($lengthRight > 4)) { for ($i = 1; $i <= 8; $i++) { $returnArray[] = $i; } } elseif (($lengthLeft > 4) && ($lengthRight < 4)) { $start = $totalPage - 4; for ($i = $start; $i <= $totalPage; $i++) { $returnArray[] = $i; } } else { for ($i = $nowPage - 4; $i <= $nowPage + 4; $i++) { $returnArray[] = $i; } } } return $returnArray; } /** * 将搜索的数组拼接成为url * 注意:PHP的内置函数http_build_query,会自动将没有值的参数清除,导致blade模板报错 * @param $array * @return string */ public static function arrayToSearchStr($array) { $fields_string = ''; reset($array); end($array); $lastKey = key($array); reset($array); foreach ($array as $key => $value) { if ($key != $lastKey) { $fields_string .= $key . '=' . $value . '&'; } else { $fields_string .= $key . '=' . $value; } } rtrim($fields_string, '&'); return $fields_string; } } //自定义分页显示省略号 <?php /** * Created by PhpStorm. * User: lilei * Date: 2019-08-05 * Time: 17:05 */ namespace App\Helpers; /** * 自定义分页类,主要用于产生分页试图 * Class Common * @package App\Library */ class CustomPage { /** * @param $text * @return string */ public static function getActivePageWrapper($text) { return '<li><span>' . $text . '</span></li>'; } /** * 获取当前页按钮的页面样式 * @param $url * @param $page * @return string */ public static function getActivePageLinkWrapper($url, $page) { return '<li class="active"><a href="' . $url . '">' . $page . '</a></li>'; } /** * 获取非当前页按钮的页面样式 * @param $url * @param $page * @return string */ public static function getPageLinkWrapper($url, $page) { return '<li><a href="' . $url . '">' . $page . '</a></li>'; } /** * 获取整个的分页样式 * @param $nowPage 当前页 * @param $totalPage 共多少页面 * @param $baseUrl 当前url * @param $search 搜索 * @return string */ public static function getSelfPageView($nowPage, $totalPage, $baseUrl, $search="") { $pagePre = '<ul class="pagination">'; $pageEnd = '</ul>'; $pageLastStr = ''; $pageNextStr = ''; if ($nowPage <= 1) { $nowPage = 1; $pageLastStr = '<li class="disabled" style="width:70px!important"><span>上一页</span></li>'; } if ($nowPage >= $totalPage) { $nowPage = $totalPage; $pageNextStr = '<li class="disabled" style="width:70px!important"><span>下一页</span></li>'; } if($totalPage == 0){ return false; } //隐藏下一页 if($nowPage == $totalPage){ $pageNextStr = '<li class="disabled" style="display:none"><span></span></li>'; } //总页数小于当前页+1 隐藏下一页 if($totalPage<($nowPage+1)){ $pageNextStr = '<li class="disabled" style="display:none"><span></span></li>'; } //当前页是1 隐藏上一页 if($nowPage==1){ $pageLastStr= '<li class="disabled" style="display:none"><span></span></li>'; } $search = []; $search['totalPage'] = $totalPage; if (empty($pageLastStr)) { $lastPage = $nowPage - 1; $search['nowPage'] = $lastPage; $lastSearchStr = self::arrayToSearchStr($search); $url = $baseUrl . '&' . $lastSearchStr; $pageLastStr = self::getPageLinkWrapper($url, '上一页'); } if (empty($pageNextStr)) { $pageNext = $nowPage + 1; $search['nowPage'] = $pageNext; $lastSearchStr = self::arrayToSearchStr($search); $url = $baseUrl . '&' . $lastSearchStr; $pageNextStr = self::getPageLinkWrapper($url, '下一页'); } $pageTemp = ''; $pageRange = self::getPageRange($nowPage, $totalPage); $pageTemp .= $pageLastStr; $pageAll = count($pageRange); $omitNum = $pageAll - 1; $omit = 0; foreach ($pageRange as $k => $page) { $omit++ ; if($nowPage<=5){ if($k == $nowPage+4){ $pageTemp .= '<li>...</li>'; } }elseif (($nowPage>=6) && ($nowPage<=$totalPage-5)) { if($k == 2){ $pageTemp .= '<li>...</li>'; } if($k== 9){ $pageTemp .= '<li>...</li>'; } }elseif($nowPage>=$totalPage-5){ if($k == 2){ $pageTemp .= '<li>...</li>'; } } $search['nowPage'] = $page; $searchStr = self::arrayToSearchStr($search); $url = $baseUrl . '&' . $searchStr; if ($page == $nowPage) { $pageTemp .= self::getActivePageLinkWrapper($url, $page); } else { $pageTemp .= self::getPageLinkWrapper($url, $page); } } $pageTemp .= $pageNextStr; $pageView = $pagePre . $pageTemp . $pageEnd; return $pageView; } /** * 获取实际显示页面范围的范围 * @param $nowPage * @param $totalPage * @return array */ public static function getPageRange($nowPage, $totalPage) { $returnArray = []; if ($totalPage <= 8) { for ($i = 1; $i <= $totalPage; $i++) { $returnArray[] = $i; } } else { if($nowPage<=5){ for ($i = 1; $i <= $nowPage+4; $i++) { $returnArray[] = $i; } $returnArray[$nowPage+4]=$totalPage; }elseif (($nowPage>=6) && ($nowPage<=$totalPage-5)) { $returnArray[1]=1; for ($i = $nowPage-2; $i <= $nowPage+4; $i++) { $returnArray[] = $i; } $returnArray[9]=$totalPage; }elseif($nowPage>=$totalPage-5){ $returnArray[1]=1; for ($i = $nowPage-2; $i <= $totalPage; $i++) { $returnArray[] = $i; } } } return $returnArray; } /** * 将搜索的数组拼接成为url * 注意:PHP的内置函数http_build_query,会自动将没有值的参数清除,导致blade模板报错 * @param $array * @return string */ public static function arrayToSearchStr($array) { $fields_string = ''; reset($array); end($array); $lastKey = key($array); reset($array); foreach ($array as $key => $value) { if ($key != $lastKey) { $fields_string .= $key . '=' . $value . '&'; } else { $fields_string .= $key . '=' . $value; } } rtrim($fields_string, '&'); return $fields_string; } }
还没有评论,来说两句吧...