Php 按顺序排列和订购
感觉好像我什么都试过了,所以我现在来找你 我正试图整理我的数据,但进展不太顺利,有点新鲜 这是我的代码:Php 按顺序排列和订购,php,cakephp,Php,Cakephp,感觉好像我什么都试过了,所以我现在来找你 我正试图整理我的数据,但进展不太顺利,有点新鲜 这是我的代码: $this->set('threads', $this->paginate('Thread', array( 'Thread.hidden' => 0, 'Thread.forum_category_id' => $id, 'order' => array( 'Thread.created'
$this->set('threads', $this->paginate('Thread', array(
'Thread.hidden' => 0,
'Thread.forum_category_id' => $id,
'order' => array(
'Thread.created' => 'desc'
)
)));
它会生成一个SQL错误,这是最后一个有趣的部分:
AND `Thread`.`forum_category_id` = 12 AND order = ('desc') ORDER BY `Thread`.`created` ASC LIMIT 25
我怎样才能解决这个问题?创建的字段显然存在于数据库中:/ 试试看
$this->set('threads', $this->paginate('Thread', array(
'Thread.hidden' => 0,
'Thread.forum_category_id' => $id
),
array(
'Thread.created' => 'desc'
)
));
我不是蛋糕师傅,只是猜测而已
编辑。是的,没错。蛋糕节选:
控制用于排序的字段
...
$this->paginate('Post',array(),array('title',slug')代码>
因此,顺序是第三个参数。当使用多个过滤器(即顺序、限制…)时,需要传入条件
键。如果只指定条件,则可以直接将其作为第二个参数传递
这应该做到:
$this->set('threads', $this->paginate('Thread', array(
'conditions' => array(
'Thread.hidden' => 0,
'Thread.forum_category_id' => $id
),
'order' => array(
'Thread.created' => 'desc'
)
)));
或者更清楚一点:
$this->paginate['order'] = array('Thread.created' => 'desc');
$this->paginate['conditions'] = array('Thread.hidden' => 0, ...);
$this->paginate['limit'] = 10;
$this->set('threads', $this->paginate());
如果出现错误,请添加public$paginate代码>到控制器的顶部 试试看
$all_threads = $this->Threads->find('all',
array(
'order' => 'Threads.created'
)
);
$saida = $this->paginate($all_threads,[
'conditions' => ['Threads.hidden' => 0]
]);
在按顺序分页时,有几件事需要注意。对于Cake 3.x,您需要:
1) 确保已将字段包括在“sortWhitelist”中
$this->paginate = [
'sortWhitelist' => [
'hidden', 'forum_category_id',
],
];
2) 对于“订单”,如果将其置于$this->paginate下,则无法在视图中对该字段进行排序。因此,最好将“订单”放在查询中(遗憾的是,文档中没有说明这一点)
查询运行,但没有排序:/@cubsink您可以查看新生成的SQL吗?接受您的答案,因为它是正确的,您是第一位:)答案有点错误。第三个参数是白名单
,因此您只能指定两个字段,这些字段可以通过分页助手中的命名参数排序
进行排序。但是实际的排序参数仍然需要在options数组(第二个参数)或$this->pagination['Model']['order']中设置,因为刚刚意识到公共分页已经通过order语句设置在顶部。我在那里瞎了一会儿。谢谢
$query = $this->Thread->find()
->where( ['Thread.hidden' => 0, 'Thread.forum_category_id' => $id, ] )
->order( ['Thread.created' => 'desc'] );
$this->set('threads', $this->paginate($query)