Re: Pager - return array rather than HTML..

Alan Knowles wrote: > > Attached (hopefully) is a patch to return an array rather than HTML. I > need the 'calculations' of pager, but not the HTML output. Haven't you looked at DB_Pager? It does exactly that (and in the lastests versions it doesn't need the use of a database). Tomas V.V.Cox > It allows you to start it up something like this. > $pager = new Pager(array( > 'totalItems' => $N, > 'perPage' => $options['perPage'], > 'returnType' => 'RAW', > 'currentPage' => $currentPage > )); > > list($number_start, $array, $number_end) = $pager->getLinks(); > > where $array is > [1] => 0 > [2] => 1 > [3] => 0 > [4] => 0 > > there is also a small change to urlencode the querystring - which may > not be neccesary...... > > regards > alan > > ------------------------------------------------------------------------ > Index: Pager.php > =================================================================== > RCS file: /repository/pear/Pager/Pager.php,v > retrieving revision 1.1 > diff -u -r1.1 Pager.php > --- Pager.php 9 Feb 2002 22:46:47 -0000 1.1 > +++ Pager.php 27 Jun 2002 12:36:48 -0000 > @@ -22,6 +22,7 @@ > * > */ > > + > class Pager { > > /** > @@ -52,13 +53,19 @@ > * Total number of items in the data > * @var integer > */ > - var $_totalItems; > + var $_totalItems = 0; > > /** > * Page data generated by this class > * @var array > */ > var $_pageData; > + /** > + * the return Type - default is HTML, > + * otherwise an you get page numbers returned, and an associative array of pageids => > isselected > + * @var string > + */ > + var $_returnType = 'HTML'; > > /** > * Constructor > @@ -68,12 +75,14 @@ > * @param $params An associative array of parameters This can contain: > * currentPage Current Page number (optional) > * perPage Items per page (optional) > - * itemData Data to page > + * itemData Data to page (optional) > + * or totalItems Total Number of items (optional) > + * returnType HTML or RAW (optional) > */ > function pager($params = array()) > { > global $HTTP_GET_VARS; > - > + > $this->_currentPage = max((int)@$HTTP_GET_VARS['pageID'], 1); > $this->_perPage = 10; > $this->_itemData = array(); > @@ -81,8 +90,9 @@ > foreach ($params as $name => $value) { > $this->{'_' . $name} = $value; > } > - > - $this->_totalItems = count($this->_itemData); > + if (!$this->_totalItems) { > + $this->_totalItems = count($this->_itemData); > + } > } > > /** > @@ -145,7 +155,7 @@ > $this->_generatePageData(); > } > > - if (isset($this->_pageData[$pageid])) { > + if (isset($this->_totalItems)) { > return array(($this->_perPage * ($pageid - 1)) + 1, min($this->_totalItems, > $this->_perPage * $pageid)); > } else { > return array(0,0); > @@ -214,6 +224,11 @@ > */ > function _generatePageData() > { > + if (!count($this->_itemData)) { > + $this->_totalPages = ceil((float)$this->_totalItems / > (float)$this->_perPage); > + return; > + } > + > $this->_totalItems = count($this->_itemData); > $this->_totalPages = ceil((float)$this->_totalItems / > (float)$this->_perPage); > $i = 1; > @@ -239,6 +254,7 @@ > global $HTTP_SERVER_VARS; > > // Sort out query string to prevent messy urls > + > $querystring = array(); > if (!empty($HTTP_SERVER_VARS['QUERY_STRING'])) { > $qs = explode('&', $HTTP_SERVER_VARS['QUERY_STRING']); > @@ -252,7 +268,7 @@ > } > > foreach ($qs as $name => $value) { > - $querystring[] = $name . '=' . $value; > + $querystring[] = $name . '=' . urlencode($value); > } > > return $HTTP_SERVER_VARS['SCRIPT_NAME'] . '?' . > implode('&', $querystring) . (!empty($querystring) ? '&' : '') > . 'pageID='; > @@ -268,13 +284,15 @@ > function _getBackLink($url, $link = '<< Back') > { > // Back link > + > if ($this->_currentPage > 1) { > - $back = '<a href="' . $url . ($this->_currentPage - 1) . > '">' . $link . '</a>'; > - } else { > - $back = ''; > + if ($this->_returnType == 'HTML') { > + return '<a href="' . $url . ($this->_currentPage - 1) . > '">' . $link . '</a>'; > + } > + return ($this->_currentPage - 1); > } > + return ''; > > - return $back; > } > > /** > @@ -289,7 +307,12 @@ > $params['itemData'] = range(1, max(1, $this->_totalPages)); > $pager =& new Pager($params); > $links = > $pager->getPageData($pager->getPageIdByOffset($this->_currentPage)); > - > + if ($this->_returnType != 'HTML') { > + foreach($links as $value) { > + $ret[$value] = ($this->_currentPage == $value); > + } > + return $ret; > + } > for ($i=0; $i<count($links); $i++) { > if ($links[$i] != $this->_currentPage) { > $links[$i] = '<a href="' . $this->_getLinksUrl() . > $links[$i] . '">' . $links[$i] . '</a>'; > @@ -309,12 +332,16 @@ > function _getNextLink($url, $link = 'Next >>') > { > if ($this->_currentPage < $this->_totalPages) { > - $next = '<a href="' . $url . ($this->_currentPage + 1) . > '">' . $link . '</a>'; > - } else { > - $next = ''; > - } > + if ($this->_returnType == 'HTML') { > + return '<a href="' . $url . ($this->_currentPage + 1) . > '">' . $link . '</a>'; > + } > + return $this->_currentPage + 1; > + } > + > + return ''; > + > > - return $next; > + > } > } > > > ------------------------------------------------------------------------ > -- > PEAR Development Mailing List (http://pear.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php