/** * Parse pagination * * @param string $query_parameter * * @throws Exception */ protected function parsePagination($query_parameter = 'page') { $pagination = null; $showFirstPages = false; $showLastPages = false; $useQuestionMark = true; // validate pagination array if (!isset($this->pagination['limit'])) { throw new Exception('no limit in the pagination-property.'); } if (!isset($this->pagination['offset'])) { throw new Exception('no offset in the pagination-property.'); } if (!isset($this->pagination['requested_page'])) { throw new Exception('no requested_page available in the pagination-property.'); } if (!isset($this->pagination['num_items'])) { throw new Exception('no num_items available in the pagination-property.'); } if (!isset($this->pagination['num_pages'])) { throw new Exception('no num_pages available in the pagination-property.'); } if (!isset($this->pagination['url'])) { throw new Exception('no URL available in the pagination-property.'); } // should we use a questionmark or an ampersand if (mb_strpos($this->pagination['url'], '?') !== false) { $useQuestionMark = false; } // no pagination needed if ($this->pagination['num_pages'] < 1) { return; } // populate count fields $pagination['num_pages'] = $this->pagination['num_pages']; $pagination['current_page'] = $this->pagination['requested_page']; // define anchor $anchor = isset($this->pagination['anchor']) ? '#' . $this->pagination['anchor'] : ''; // as long as we have more then 5 pages and are 5 pages from the end we should show all pages till the end if ($this->pagination['requested_page'] > 5 && $this->pagination['requested_page'] >= $this->pagination['num_pages'] - 4) { // init vars $pagesStart = $this->pagination['num_pages'] > 7 ? $this->pagination['num_pages'] - 5 : $this->pagination['num_pages'] - 6; $pagesEnd = $this->pagination['num_pages']; // fix for page 6 if ($this->pagination['num_pages'] == 6) { $pagesStart = 1; } // show first pages if ($this->pagination['num_pages'] > 7) { $showFirstPages = true; } } elseif ($this->pagination['requested_page'] <= 5) { // as long as we are below page 5 and below 5 from the end we should show all pages starting from 1 // init vars $pagesStart = 1; $pagesEnd = 6; // when we have 7 pages, show 7 as end if ($this->pagination['num_pages'] == 7) { $pagesEnd = 7; } elseif ($this->pagination['num_pages'] <= 6) { // when we have less then 6 pages, show the maximum page $pagesEnd = $this->pagination['num_pages']; } // show last pages if ($this->pagination['num_pages'] > 7) { $showLastPages = true; } } else { // page 6 // init vars $pagesStart = $this->pagination['requested_page'] - 2; $pagesEnd = $this->pagination['requested_page'] + 2; $showFirstPages = true; $showLastPages = true; } // show previous if ($this->pagination['requested_page'] > 1) { // build URL if ($useQuestionMark) { $url = $this->pagination['url'] . '?' . $query_parameter . '=' . ($this->pagination['requested_page'] - 1); } else { $url = $this->pagination['url'] . '&' . $query_parameter . '=' . ($this->pagination['requested_page'] - 1); } // set $pagination['show_previous'] = true; $pagination['previous_url'] = $url . $anchor; // flip ahead $this->header->addLink(array('rel' => 'prev', 'href' => SITE_URL . $url . $anchor)); } // show first pages? if ($showFirstPages) { // init var $pagesFirstStart = 1; $pagesFirstEnd = 1; // loop pages for ($i = $pagesFirstStart; $i <= $pagesFirstEnd; ++$i) { // build URL if ($useQuestionMark) { $url = $this->pagination['url'] . '?' . $query_parameter . '=' . $i; } else { $url = $this->pagination['url'] . '&' . $query_parameter . '=' . $i; } // add $pagination['first'][] = array('url' => $url . $anchor, 'label' => $i); } } // build array for ($i = $pagesStart; $i <= $pagesEnd; ++$i) { // init var $current = $i == $this->pagination['requested_page']; // build URL if ($useQuestionMark) { $url = $this->pagination['url'] . '?' . $query_parameter . '=' . $i; } else { $url = $this->pagination['url'] . '&' . $query_parameter . '=' . $i; } // add $pagination['pages'][] = array('url' => $url . $anchor, 'label' => $i, 'current' => $current); } // show last pages? if ($showLastPages) { // init var $pagesLastStart = $this->pagination['num_pages']; $pagesLastEnd = $this->pagination['num_pages']; // loop pages for ($i = $pagesLastStart; $i <= $pagesLastEnd; ++$i) { // build URL if ($useQuestionMark) { $url = $this->pagination['url'] . '?' . $query_parameter . '=' . $i; } else { $url = $this->pagination['url'] . '&' . $query_parameter . '=' . $i; } // add $pagination['last'][] = array('url' => $url . $anchor, 'label' => $i); } } // show next if ($this->pagination['requested_page'] < $this->pagination['num_pages']) { // build URL if ($useQuestionMark) { $url = $this->pagination['url'] . '?' . $query_parameter . '=' . ($this->pagination['requested_page'] + 1); } else { $url = $this->pagination['url'] . '&' . $query_parameter . '=' . ($this->pagination['requested_page'] + 1); } // set $pagination['show_next'] = true; $pagination['next_url'] = $url . $anchor; // flip ahead $this->header->addLink(array('rel' => 'next', 'href' => SITE_URL . $url . $anchor)); } // multiple pages $pagination['multiple_pages'] = $pagination['num_pages'] == 1 ? false : true; // assign pagination $this->tpl->assign('pagination', $pagination); }