[英]Natural sorting Ajax Datatables in Codeigniter
努力弄清楚如何使用 Codeigniter 活動記錄在 AJAX 數據表中設置自然排序。 在大多數情況下,應該排序的字段只有數字……在其他情況下是字符串,因此 MySQL 表字段設置為 VARCHAR。
我需要自然地 srt 要在 Datatables 中顯示的字段。
活動記錄 Codeigniter 查詢如下。
function list_all($limit,$start,$col,$dir)
{
$this->rmi_db->select ("
$this->table_dev.id,
$this->table_dev.fl,
$this->table_dev.mm,
$this->table_dev.batch,
$this->table_dev.n,
$this->table_dev.ditta,
$this->table_dev.tipo,
$this->table_dev.costruzione,
$this->table_dev.motori,
$this->table_dev.nc,
$this->table_dev.serie,
$this->table_dev.ca,
$this->table_dev.consegna,
$this->table_dev.matr_usaf AS usaf,
$this->table_dev.matr_usn AS usn,
$this->table_dev.matr_caf AS caf,
$this->table_dev.matr_raf AS raf,
$this->table_dev.codici,
$this->table_dev.note,
$this->table_dev.reg_civili,
$this->table_dev.matricola_civ,
$this->table_dev.prima_reg,
$this->table_dev.n_contratto,
$this->table_dev.data_contratto,
$this->table_dev.importo_contratto,
$this->table_dev.note_contratto,
$this->table_dev.f29,
$this->table_dev.f30,
");
$this->rmi_db->from("$this->table_dev");
$this->rmi_db->where("$this->table_dev.mm !=", "");
$this->rmi_db->limit($limit, $start);
$this->rmi_db->order_by($col, $dir);
$query = $this->rmi_db->get();
if($query->num_rows()>0)
{
return $query->result();
}
else
{
return null;
}
}
mm字段應該自然排序。 我不知道如何以及是否可以解決這個問題。 我嘗試了此討論解決方案中的解決方案,即 Bin 方式,但 select 無法正常工作(出現 500 服務器錯誤)
非常感謝您的幫助
使用解決方案,試試下面。 它應該可以工作但未經測試。
function list_all($limit,$start,$col,$dir)
{
$this->rmi_db->select ("
$this->table_dev.id,
$this->table_dev.fl,
$this->table_dev.mm,
$this->table_dev.mm, CAST($this->table_dev.mm as SIGNED) AS casted_column,//changed
$this->table_dev.batch,
$this->table_dev.n,
$this->table_dev.ditta,
$this->table_dev.tipo,
$this->table_dev.costruzione,
$this->table_dev.motori,
$this->table_dev.nc,
$this->table_dev.serie,
$this->table_dev.ca,
$this->table_dev.consegna,
$this->table_dev.matr_usaf AS usaf,
$this->table_dev.matr_usn AS usn,
$this->table_dev.matr_caf AS caf,
$this->table_dev.matr_raf AS raf,
$this->table_dev.codici,
$this->table_dev.note,
$this->table_dev.reg_civili,
$this->table_dev.matricola_civ,
$this->table_dev.prima_reg,
$this->table_dev.n_contratto,
$this->table_dev.data_contratto,
$this->table_dev.importo_contratto,
$this->table_dev.note_contratto,
$this->table_dev.f29,
$this->table_dev.f30,
");
$this->rmi_db->from("$this->table_dev");
$this->rmi_db->where("$this->table_dev.mm !=", "");
$this->rmi_db->limit($limit, $start);
$this->rmi_db->order_by($col, $dir);
$this->rmi_db->order_by('casted_column', 'ASC'); // changed
$this->rmi_db->order_by($this->table_dev.mm, 'ASC'); // changed
$query = $this->rmi_db->get(); //changed
if($query->num_rows()>0)
{
return $query->result();
}
else
{
return null;
}
}
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