如何在数据库原始复杂查询中使用分页

Question

请帮助我将laravel的Paginate类与DB原始复杂查询一起使用...

尝试了一些技巧来获得laravel paginate的结果，但是由于查询的复杂性，这给我带来了麻烦

$data = DB::select(DB::raw("SELECT DISTINCT c.id, c.name, c.active, c.image, c.created_at, (SELECT COUNT(*) FROM categories WHERE c.id=parent_id) AS subcat_count, (SELECT COUNT(*) FROM post_ads WHERE c.id=cat_id) AS postad_count FROM categories AS c LEFT OUTER JOIN categories AS subc ON c.id = subc.parent_id LEFT OUTER JOIN post_ads AS postadc ON c.id = postadc.cat_id WHERE c.parent_id=0 ORDER BY c.name ASC LIMIT 9"));

Answer 1

您可以使用长度感知型分页器进行分页，在您的控制器中做到这样，

@Echo Off
SetLocal DisableDelayedExpansion
Title VHACK!
Echo(
Echo   ^|     ^| ^|     ^|   /î\    /îîî\ ^|     / ³
Echo   ^|     ^| ^|     ^|  /   \  ^|      ^|    /  ³
Echo   `     ' ^|-----^| '-----` ^|      ^|---^<   ³
Echo    \   /  ^|     ^| ^|     ^| ^|      ^|    \  
Echo     \_/   ^|     ^| ^|     ^|  \___/ ^|     \ þ
Echo(
Echo Welcome to VHACK!
Pause
GoTo :EOF