Question

我的模型函数获取论坛未显示正确的顺序或我的父类和子类。

父类别 PHP 应首先位于数组顶部，因为它是类别46的父级，45

问题：如何确保其显示正确的顺序

Array
(
    [0] => Array
        (
            [fid] => 46
            [pid] => 41
            [name] => password_hash
        )

    [1] => Array // Parent Category
        (
            [fid] => 41
            [pid] => 0
            [name] => PHP
        )

    [2] => Array
        (
            [fid] => 45
            [pid] => 41
            [name] => str_replace
        )

)

模型

public function get_forums($pid = '0') {
    $categories_data = array();

    $this->db->where('pid', $pid);
    $this->db->or_where('pid >', $pid);
    $this->db->order_by('name', 'asc');

    $query = $this->db->get('forum');

    foreach ($query->result() as $result) {

    $categories_data[] = array(
    'fid' => $result->fid,
    'pid' => $result->pid,            
    'name' => $result->name
    );

    if ($result->pid > 0) {

    $category_children[] = $this->make_parent_list($result->pid);

    if ($category_children) {
    $categories = array_merge($category_children, $categories_data);
    }      

    }

    }

    return $categories_data;

}

function make_parent_list($fid) {
        $forum_data = array();


        $forum_query = $this->db->query("SELECT * FROM forum WHERE fid = '" . (int)$fid . "'");

        foreach ($forum_query->result() as $forum) {

            if ($forum->pid > 0) {

                $forum_data[] = array(
                    'pid' => $forum->pid,
                );

                $forum_children = $this->make_parent_list($forum->pid);

                if ($forum_children) {
                    $forum_data = array_merge($forum_children, $forum_data);
                }           

            }
        }

        return $forum_data;
    }

Answer 1

问题在于订购。改变这个

$this->db->order_by('name', 'asc');

有这样的事情：

$this->db->order_by('fid', 'asc');

然后，您也可以按名称对结果进行排序，将其添加为辅助结果：

 $this->db->order_by('fid', 'asc');
 $this->db->order_by('name', 'asc');

父类别不在数组中首先显示？

1 个答案: