$nav = model('app\common\model\Category')->where('type','zcases')->where('pid','0')->order('weigh asc')->select();
foreach($nav as $k=>$v){
$nav[$k]['nav'] = model('app\common\model\Category')->where('type','zcases')->where('pid',$v['id'])->order('weigh asc')->select();
}
$id=$ids;
$ids = model('app\common\model\Category')->where('id',$ids)->find();
$pid = model('app\common\model\Category')->where('id',$ids['pid'])->find();
$cases = model('app\admin\model\Zcases')->where('id',$id)->find();
$cases['images'] = explode(",", $cases['images']);
$cases2 = model('app\admin\model\Zcases')->where('id','<',$ids['id'])->where('pid2',$cases['pid2'])->order('id desc')->find();
$cases3 = model('app\admin\model\Zcases')->where('id','>',$ids['id'])->where('pid2',$cases['pid2'])->order('id asc')->find();
$this->assign([
'banner'=>$banner,
'nav'=>$nav,
'pid'=>$pid,
'ids'=>$ids,
'cases'=>$cases,
'cases2'=>$cases2,
'cases3'=>$cases3,