帖子列表页获取封面图片_discuz二次开发教程

1.  
2. source/module/forum/forum_forumdisplay.php
3.  

,

1.  
2. if($thread[‘rushreply’]) {
3.         $rushtids[$thread[‘tid’]] = $thread[‘tid’];
4. }
5.  

,

1.  
2.         $threada= C::t(‘forum_attachment’)->fetch_all_by_id(‘tid’, $thread[‘tid’], ‘aid’);
3.         $threadaid = reset($threada);
4.         $threadpic = C::t(‘forum_attachment_n’)->fetch_by_aid_uid($threadaid[‘tableid’], $threadaid[‘aid’], $thread[‘authorid’]);
5.         $thread[‘pic’] = $threadpic[‘attachment’];
6.  

,

1. $thread[‘pic’]

,

1.  
2. source/class/table/table_forum_announcement.php
3.  

,

1.  
2. $orderby = ‘ORDER BY ‘.DB::order($orderby, ‘DESC’);
3.  

,

1.  
2. $orderby = ‘ORDER BY ‘.DB::order($orderby, ‘ASC’);
3.  

,找到文件

1.  
2. source/module/forum/forum_forumdisplay.php
3.  

大于809行找到如下代码

1.  
2. if($thread[‘rushreply’]) {
3.         $rushtids[$thread[‘tid’]] = $thread[‘tid’];
4. }
5.  

在这段代码下面添加如下代码：

1.  
2.         $threada= C::t(‘forum_attachment’)->fetch_all_by_id(‘tid’, $thread[‘tid’], ‘aid’);
3.         $threadaid = reset($threada);
4.         $threadpic = C::t(‘forum_attachment_n’)->fetch_by_aid_uid($threadaid[‘tableid’], $threadaid[‘aid’], $thread[‘authorid’]);
5.         $thread[‘pic’] = $threadpic[‘attachment’];
6.  

这样就可以在列表页模板中使用

1. $thread[‘pic’]

来加载一张封面图片，但是需要注意这样是加载最后一张插入的图片！


如果要改为第一张图片还需要修改另外的一个文件

找到文件

1.  
2. source/class/table/table_forum_announcement.php
3.  

找到

1.  
2. $orderby = ‘ORDER BY ‘.DB::order($orderby, ‘DESC’);
3.  

修改为：

1.  
2. $orderby = ‘ORDER BY ‘.DB::order($orderby, ‘ASC’);
3.  

好了这样就可在列表页，加载发帖时上传的第一张图片，做为封面来调用了！