我们在做织梦模板开发时，为了更好的利于seo，在每篇文章下调用与这篇文章有着相同tag或keyword的相关文章。为了实现这个功能，自定义了一个标签：dede:liketags。标签代码如下：
自定义标签代码
1、新建一个文件名称为 liketags.lib.php，存放在/include/taglib/目录下。 该文件代码如下：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 <?php if(!defined('DEDEINC')) exit('Request Error!'); function lib_liketags(&$ctag,&$refObj) { global $dsql; //属性处理 $attlist="row|12,titlelen|30,infolen|250,col|1,tablewidth|100,mytypeid|0,byabs|0,imgwidth|120,imgheight|90,flag|"; FillAttsDefault($ctag->CAttribute->Items,$attlist); extract($ctag->CAttribute->Items, EXTR_SKIP); $revalue = ''; if(empty($tablewidth)) $tablewidth = 100; if(empty($col)) $col = 1; $colWidth = ceil(100/$col); $tablewidth = $tablewidth."%"; $colWidth = $colWidth."%"; $orwheres = ''; if($flag != '') { $flags = explode(',', $flag); for($i=0; isset($flags[$i]); $i++) $orwheres .= " AND FIND_IN_SET('{$flags[$i]}', arc.flag)>0 "; } $ids = array(); $tids = array(); if(!empty($refObj->Fields['tags'])) { $keyword = $refObj->Fields['tags']; } else { $keyword = ( !empty($refObj->Fields['keywords']) ? $refObj->Fields['keywords'] : '' ); } $typeid = ( !empty($mytypeid) ? $mytypeid : 0 ); if(empty($typeid)) { if(!empty($refObj->Typelink->TypeInfos['reid'])) { $typeid = $refObj->Typelink->TypeInfos['reid']; } else { if(!empty($refObj->Fields['typeid'])) $typeid = $refObj->Fields['typeid']; } } if( !empty($typeid) && !preg_match('#,#', $typeid) ) { $typeid = GetSonIds($typeid); } if(!empty($refObj->Fields['tags']) && $eregtype != 'keyword' ) { $tags = explode(',', addslashes($refObj->Fields['tags'])); $getsql = " tag like '".join("' OR tag like '", $tags)."' "; $dsql->Execute('me', "Select * From `dede_tagindex` where $getsql "); while($arow = $dsql->GetArray('me')) { $tids[] = $arow['id']; } $tid = join(',', $tids); if($tid!='') { $dsql->Execute("me", "Select aid From `dede_taglist` where tid in($tid) And arcrank > -1 group by aid order by aid desc"); while($arow = $dsql->GetArray("me")) { $ids[] = $arow['aid']; $arcid = $refObj->Fields['aid']; } } } if($eregtype == 'tag' && count($ids) == 0 ) { return; } else { if(count($ids) > 0) { if(!empty($typeid)) { $typeid = " And arc.typeid in($typeid) And arc.id<>$arcid "; } $idsStr = join(',', $ids); $query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule, tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id where arc.id in($idsStr) $typeid order by arc.id desc limit 0, $row"; } else { $limitRow = $row - count($ids); $keyword = ''; if(!empty($refObj->Fields['keywords'])) { $keywords = explode(',' , trim($refObj->Fields['keywords'])); $keyword = ''; $n = 1; foreach($keywords as $k) { if($n > 3) break; if(trim($k)=='') continue; else $k = addslashes($k); $keyword .= ($keyword=='' ? " CONCAT(arc.keywords,' ',arc.title) like '%$k%' " : " OR CONCAT(arc.keywords,' ',arc.title) like '%$k%' "); $n++; } } $arcid = (!empty($refObj->Fields['id']) ? $refObj->Fields['aid'] : 0); if( empty($arcid) || $byabs==0 ) { $orderquery = " order by arc.id desc "; } else { $orderquery = " order by ABS(arc.id - ".$arcid.") "; } if($keyword != '') { if(!empty($typeid)) { $typeid = " And arc.typeid in($typeid) And arc.id<>$arcid "; } $query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule, tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id where arc.arcrank>-1 and ($keyword) $typeid $orderquery limit 0, $row"; } else { if(!empty($typeid)) { $typeid = " arc.typeid in($typeid) And arc.id<>$arcid "; } $query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule, tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id where arc.arcrank>-1 and $typeid $orderquery limit 0, $row"; } } } $innertext = trim( $ctag->GetInnerText() ); if($innertext=='') $innertext = GetSysTemplets('part_arclist.htm'); $dsql->SetQuery($query); $dsql->Execute('al'); $artlist = ''; if($col > 1){ $artlist = "<table width='$tablewidth' border='0' cellspacing='0' cellpadding='0'>/r/n"; } $dtp2 = new DedeTagParse(); $dtp2->SetNameSpace('field', '[', ']'); $dtp2->LoadString($innertext); $GLOBALS['autoindex'] = 0; $line = $row; for($i=0; $i < $line; $i++) { if($col>1) $artlist .= "<tr>/r/n"; for($j=0; $j < $col; $j++) { if($col>1) $artlist .= " <td width='$colWidth'>/r/n"; if($row = $dsql->GetArray("al")) { $ids[] = $row['id']; //处理一些特殊字段 www.dede58.com织梦模板网 $row['info'] = $row['infos'] = cn_substr($row['description'],$infolen); $row['id'] = $row['id']; if($row['corank'] > 0 && $row['arcrank']==0) { $row['arcrank'] = $row['corank']; } $row['filename'] = $row['arcurl'] = GetFileUrl($row['id'],$row['typeid'],$row['senddate'],$row['title'],$row['ismake'], $row['arcrank'],$row['namerule'],$row['typedir'],$row['money'],$row['filename'],$row['moresite'],$row['siteurl'],$row['sitepath']); $row['typeurl'] = GetTypeUrl($row['typeid'],$row['typedir'],$row['isdefault'],$row['defaultname'],$row['ispart'], $row['namerule2'],$row['moresite'],$row['siteurl'],$row['sitepath']); if($row['litpic'] == '-' || $row['litpic'] == '') { $row['litpic'] = $GLOBALS['cfg_cmspath'].'/images/defaultpic.gif'; } if(!preg_match("#^http:////#i", $row['litpic']) && $GLOBALS['cfg_multi_site'] == 'Y') { $row['litpic'] = $GLOBALS['cfg_mainsite'].$row['litpic']; } $row['picname'] = $row['litpic']; $row['stime'] = GetDateMK($row['pubdate']); $row['typelink'] = "<a href='".$row['typeurl']."'>".$row['typename']."</a>"; $row['image'] = "<img src='".$row['picname']."' border='0' width='$imgwidth' height='$imgheight' alt='".preg_replace("#['><]#","",$row['title'])."'>"; $row['imglink'] = "<a href='".$row['filename']."'>".$row['image']."</a>"; $row['fulltitle'] = $row['title']; $row['title'] = cn_substr($row['title'], $titlelen); if($row['color']!='') $row['title'] = "<font color='".$row['color']."'>".$row['title']."</font>"; if(preg_match('#b#', $row['flag'])) $row['title'] = "<strong>".$row['title']."</strong>"; $row['textlink'] = "<a href='".$row['filename']."'>".$row['title']."</a>"; $row['plusurl'] = $row['phpurl'] = $GLOBALS['cfg_phpurl']; $row['memberurl'] = $GLOBALS['cfg_memberurl']; $row['templeturl'] = $GLOBALS['cfg_templeturl']; if(is_array($dtp2->CTags)) { foreach($dtp2->CTags as $k=>$ctag) { if($ctag->GetName()=='array') { $dtp2->Assign($k,$row); } else { if(isset($row[$ctag->GetName()])) $dtp2->Assign($k,$row[$ctag->GetName()]); else $dtp2->Assign($k,''); } } $GLOBALS['autoindex']++; } $artlist .= $dtp2->GetResult()."/r/n"; } //if hasRow else { $artlist .= ''; } if($col>1) $artlist .= " </td>/r/n"; } //Loop Col if($col>1) $i += $col - 1; if($col>1) $artlist .= " </tr>/r/n"; } //loop line if($col>1) $artlist .= " </table>/r/n"; $dsql->FreeResult("al"); return $artlist; }
前台模板调用代码如下：
1 2 3 4 5 6 7 8 9 10 11 12 13 {dede:liketags row='3' mytypeid='6' eregtype='all|tag|keyword' titlelen='250' infolen='250'} <li> <a href="[field:arcurl/]" title="[field:title/]" target="_blank"> <div class="list-img"> <img src="[field:litpic/]" alt="[field:title/]"/> </div> <div class="list-info"> <p class="title">[field:title/]</p> <p class="meta">[field:description /]</p> </div> </a> </li> {/dede:liketags}新闻热点
疑难解答
