[英]Codeigniter Three Table Join, displaying image problem
我正在使用CodeIgniter PHP框架和MySQL用於數據庫。 我想顯示房間的特定平面圖(img)還顯示沒有房間的建築物。
我有3張桌子:
tblbldg - 建築
小房間-房間
tblfloorplan - 平面圖
我嘗試了這段代碼,但它最終混合img,就像building1 floor1顯示與2樓1樓層相同的平面圖:
public function get_rooms(){ $this->db->select('tblroom.id, tblroom.name, tblroom.floor, tblbldg.name as building_name, tblfloorplan.img'); $this->db->from('tblroom'); $this->db->join('tblbldg',"tblbldg.id = tblroom.building_id"); $this->db->join('tblfloorplan',"tblfloorplan.floor = tblroom.floor"); return $this->db->get(); }
嘗試這個,
public function get_rooms(){
$this->db->select('tblroom.id,
tblroom.name,
tblroom.floor,
tblbldg.name as building_name,
tblfloorplan.img');
$this->db->from('tblroom');
$this->db->join('tblbldg',"tblbldg.id = tblroom.building_id");
$this->db->join('tblfloorplan',"tblbldg.id = tblfloorplan.building_id and tblfloorplan.floor = tblroom.floor");
return $this->db->get();
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.