帝國CMS靈動標簽調用多表多模型文章信息的方法教程

2024-08-28 12:23:38

字體：大中小

來源：轉載

供稿：網友

要提高這條語句在頁面中的性能博主將這個片段寫入了自定義頁面

這樣就能在需要的頁面區域調用出來而不需要時時訪問數據庫

大約10分鐘刷新一次降低了大數據下訪客每次訪問時都要查詢多次數據庫的巨大壓力

帝國7的包含自定義頁面可以這么寫

<?php require(ECMS_PATH.'page1.html');?>

注意：page1.html在根目錄。若在t目錄則寫成“t/page1.html”

或

[includefile]'../../page1.html'[/includefile] 注意：開啟“[includefile]”標簽后臺--模板--標簽--標簽管理--修改（選擇對應標簽）--開啟

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1、調用多模型的最新文章

[e:loop={'select * from (

select id,classid,titleurl,filename,title,newstime,titlepic from [!db.pre!]ecms_movie where newstime union

select id,classid,titleurl,filename,title,newstime,titlepic from [!db.pre!]ecms_news where newstime union

select id,classid,titleurl,filename,title,newstime,titlepic from [!db.pre!]ecms_photo where newstime union

select id,classid,titleurl,filename,title,newstime,titlepic from [!db.pre!]ecms_flash where newstime union

select id,classid,titleurl,filename,title,newstime,titlepic from [!db.pre!]ecms_article where newstime

) a order by newstime desc limit 10',10,24,1}]

<a href="<?=$bqsr['titleurl']?>" target="_blank"><?=$bqr['title']?></a> <br>

[/e:loop]

帝國CMS多表調用最新信息,該演示代碼為默認數據表下全站最新10條圖片信息,自己根據需求可以附加條件,實現全站點擊,全站頭條,全站推薦等等.

注釋：以上多個模型用“Union”連接調用

若只調用圖片：要加ispic=1條件

舉例：

[e:loop={'select * from (

select id,classid,titleurl,filename,title,newstime,titlepic from [!db.pre!]ecms_news where newstime and ispic=1 union

select id,classid,titleurl,filename,title,newstime,titlepic from [!db.pre!]ecms_photo where newstime and ispic=1 union

select id,classid,titleurl,filename,title,newstime,titlepic from [!db.pre!]ecms_flash where newstime and ispic=1 union

select id,classid,titleurl,filename,title,newstime,titlepic from [!db.pre!]ecms_article where newstime and ispic=1) a order by newstime desc limit 10',10,24,1}]

<a href="<?=$bqsr['titleurl']?>" target="_blank"><img src="<?=$bqr['titlepic']?>"/><?=$bqr['title']?></a> <br>

[/e:loop]

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2、調用多模型的最新文章

[e:loop={'select title,titleurl,titlepic from [!db.pre!]ecms_photo Union All select title,titleurl,titlepic from [!db.pre!]ecms_download Union All

select title,titleurl,titlepic from [!db.pre!]ecms_news',0,24,0}]

<a href="<?=$bqsr['titleurl']?>" target="_blank"><?=$bqr['title']?></a> <br>

[/e:loop]

注釋：以上調用的是（圖片模型：photo、下載模型：download、新聞模型：news）三個模型的文章

三個模型用“Union All”連接調用

若指定欄目用：where classid in(46,47,51)，

若調用推薦在其后追加：and isgood=1，

若指定調用條數在其后追加：limit 10

舉例：

多表調用同時顯示“標題”所在的“欄目名稱”和“鏈接” 及以“點擊排行”

[e:loop={"select titleurl,title,onclick,classid from phome_ecms_news union all select titleurl,title,onclick,classid from phome_ecms_article order by onclick desc limit 10",1,24,0}]

<LI><A href="<?=$bqsr[classurl]?>" target=_blank><?=$bqsr[classname]?></A> | <A href="<?=$bqsr[titleurl]?>" target=_blank><?=$bqr[title]?></A></LI>

[/e:loop]

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3、多表聯合查詢“主、副”表調用文章

[e:loop={'select * from (

(select id,classid,title,titleurl,titlepic,newstime from [!db.pre!]ecms_download limit 3 )

Union All

(select id,classid,title,titleurl,titlepic,newstime from [!db.pre!]ecms_movie limit 3)

) as A order by newstime desc ',0,24,0}]

<?php

$fb=$empire->fetch1("select *

from