Question

Lindsay是一个社交女孩，所以她遇到了很多人，她想整理她的笔记本：

首先是标签，她的名字有点像'学校'，'工作'，'派对'，'在线'等。
在每个标签内，她创建了群组，如：'cool'，'handy'，'clingy'，'good kissers'，'婚姻材料'等。
在这些群体中实际上是伙伴，每个群体中只有一个。

所以，现在我正在查询数据库，一目了然地向她展示笔记本。

function getNotebook($user_id)
{
    // $data[][][] = array();  // declare 3-dimensional array
    $sql = "SELECT tab_id, tab_name, tab_color FROM tab WHERE user_id = ?";
    $query = $this->db->query($sql, $user_id);

    foreach ($query->result() as $row)
    {
        // ... (put each tab array in the first dimension of $data array)
        $sql = "SELECT group_id, group_name, group_size, group_position FROM group WHERE tab_id = ?";
        $query2 = $this->db->query($sql, $row->tab_id);

        foreach ($query2->result() as $row2)
        {
            // ... (put each group array in the second dimension of $data)
            $sql = "SELECT person_id, person_name, person_gender, person_eye_color FROM person WHERE group_id = ?";
            $query3 = $this->db->query($sql, $row2->group_id);

            foreach ($query3->result() as $row3)
            {
                // ... (put each person array in the third dimension of $data)
            }
        }
    }

    return $data;
}

我知道在模型中创建HTML并不好，所以我需要保存它（在数组中？）并将其返回到控制器，然后进行建模，我需要通过它来添加HTML标签

功能中的评论是我需要你帮助的地方。

解决方案＃2：
将user_id字段添加到person表中，并使用此查询获取所有信息：

$sql = "SELECT * FROM person p  
  INNER JOIN group g ON g.id = p.group_id  
  INNER JOIN tab t ON t.id = g.tab_id
WHERE p.user_id = ?  
ORDER BY t.id, g.id";
$query = $this->db->query($sql, $user_id);

Answer 1

function getNotebook($user_id)
{
    $data = array(); // not applicable
    $sql = "SELECT tab_id, tab_name, tab_color FROM tab WHERE user_id = ?";
    $query = $this->db->query($sql, $user_id);

    foreach ($query->result() as $row)
    {
        $temp1 = array(
            'id' => $row->tab_id,
            'name' => $row->tab_name,
            'color' => $row->tab_color,
            'groups' => array()
        ); // create temporary array for storage after loop

        $sql = "SELECT group_id, group_name, group_size, group_position FROM group WHERE tab_id = ?";
        $query2 = $this->db->query($sql, $row->tab_id);

        foreach ($query2->result() as $row2)
        {
            $temp2 = array(
                'id' => $row2->group_id,
                'name' => $row2->group_name,
                'size' => $row2->group_size,
                'position' => $row2->group_position,
                'people' => array()
            ); // create another temporary array for storage after loop for second dimension

            $sql = "SELECT person_id, person_name, person_gender, person_eye_color FROM person WHERE group_id = ?";
            $query3 = $this->db->query($sql, $row2->group_id);

            foreach ($query3->result() as $row3)
            {
                $temp2['people'][] = array(
                    'name' => $row3->person_name,
                    'gender' => $row3->person_gender,
                    'eye_color' => $row3->person_eye_color
                ); // store data
            }
            $temp1['groups'][] = $temp2; // store temp array
        }
        $data[] = $temp1; // store temp array
    }

    return $data;
}

这就是你要找的东西吗？

社交女孩笔记本问题或如何从模型传递分层数据到Codeigniter中查看？

1 个答案: