By default, this method will try to determine the page size by [[pageSizeParam]] in [[params]].
If the page size cannot be determined this way, [[defaultPageSize]] will be returned.
| public getPageSize ( ) : integer | ||
| return | integer | the number of items per page. If it is less than 1, it means the page size is infinite, and thus a single page contains all items. |
/**
* Creates an url for the specified page size.
* @param \yii\data\Pagination $pagination
* @param integer $pageSize page size
* @param boolean $absolute whether to create an absolute URL. Defaults to `false`.
*
* @return string the created URL
*/
public static function createSizeUrl($pagination, $pageSize, $absolute = false)
{
if (($params = $pagination->params) === null) {
$request = Yii::$app->getRequest();
$params = $request instanceof Request ? $request->getQueryParams() : [];
}
$currentPageSize = $pagination->getPageSize();
$currentPage = $pagination->getPage();
$target = $currentPage * $currentPageSize;
$page = (int) ($target / $pageSize);
if ($page > 0 || $page >= 0 && $pagination->forcePageParam) {
$params[$pagination->pageParam] = $page + 1;
} else {
unset($params[$pagination->pageParam]);
}
if ($pageSize != $pagination->defaultPageSize) {
$params[$pagination->pageSizeParam] = $pageSize;
} else {
unset($params[$pagination->pageSizeParam]);
}
$params[0] = $pagination->route === null ? Yii::$app->controller->getRoute() : $pagination->route;
$urlManager = $pagination->urlManager === null ? Yii::$app->getUrlManager() : $pagination->urlManager;
if ($absolute) {
return $urlManager->createAbsoluteUrl($params);
} else {
return $urlManager->createUrl($params);
}
}
/**
* Serializes a pagination into an array.
* @param Pagination $pagination
* @return array the array representation of the pagination
* @see addPaginationHeaders()
*/
protected function serializePagination($pagination)
{
return ['_links' => Link::serialize($pagination->getLinks(true)), '_meta' => ['totalCount' => $pagination->totalCount, 'pageCount' => $pagination->getPageCount(), 'currentPage' => $pagination->getPage(), 'perPage' => $pagination->getPageSize()]];
}
/**
* Serializes a pagination into an array.
* @param Pagination $pagination
* @return array the array representation of the pagination
* @see addPaginationHeaders()
*/
protected function serializePagination($pagination)
{
return [$this->linksEnvelope => Link::serialize($pagination->getLinks(true)), $this->metaEnvelope => ['totalCount' => $pagination->totalCount, 'pageCount' => $pagination->getPageCount(), 'currentPage' => $pagination->getPage() + 1, 'perPage' => $pagination->getPageSize()]];
}
/**
* 获取列表记录
*
* @param array|string $condition 条件
* @param array $params 参数
* @param string $order 排序
* @param int $page 页码
* @param int $pageSize 每页数量
* @return array
*/
public static function getListByCondition($condition = '', $params = [], $order = null, $page = 1, $pageSize = 20)
{
$pagination = new Pagination();
$pagination->setPage($page);
$pagination->setPageSize($pageSize);
$pagination->totalCount = static::find()->innerJoinWith('menuUrl')->andWhere($condition, $params)->count(1);
$list = static::find()->innerJoinWith('menuUrl')->andWhere($condition, $params)->offset($pagination->getOffset() - $pagination->getPageSize())->limit($pagination->getPageSize())->orderBy($order)->asArray()->all();
return ['paginationObj' => $pagination, 'pagination' => ['currentPage' => $page, 'pageSize' => $pageSize, 'pageCount' => $pagination->getPageCount(), 'totalCount' => $pagination->totalCount], 'list' => $list];
}
protected function cacheKeyPaginate(Pagination $paginate)
{
$keys = ['page' => $paginate->getPage(), 'per_page' => $paginate->getPageSize()];
return md5(serialize($keys));
}
/**
* Serializes a pagination into an array.
* @param \yii\data\Pagination $pagination
* @return array the array representation of the pagination
* @see addPaginationHeaders()
*/
protected function serializePagination($pagination)
{
if ($this->serializedPagination !== null) {
return $this->serializedPagination;
}
/** @var \yii\rest\Serializer $serializer */
$serializer = $this->serializer;
return $this->serializedPagination = [$serializer->linksEnvelope => \yii\web\Link::serialize($pagination->getLinks(true)), $serializer->metaEnvelope => ['totalCount' => $pagination->totalCount, 'pageCount' => $pagination->getPageCount(), 'currentPage' => $pagination->getPage() + 1, 'perPage' => $pagination->getPageSize()]];
}