[英]Codeigniter active record bug? Query builder added a line
我認為Codeigniter(版本3.1.2)活動記錄有問題...
我的模型函數是:
function select_country($ID, $typec)
{
$data = '';
$this ->db -> select ('*');
$this ->db -> where ('ID', $ID);
$query = $this ->db -> get ('country');
if ($query->num_rows()>0){
foreach ($query->result() as $row){
$data=$row->$typec;
}
}
return $data;
}
當我運行它時,出現此錯誤:
發生數據庫錯誤
錯誤號:1064
您的SQL語法有誤; 檢查與您的MySQL服務器版本相對應的手冊,以在第1行的'* FROM country
WHERE ID
='6'附近使用正確的語法
SELECT `ads`, * FROM `country` WHERE `ID` = '6'
文件名:models / Country_model.php
行號:40
我注意到另外一行:“ SELECT ads
,* FROM country
WHERE ID
='6'”,但我不知道它從哪里來。 沒有“廣告”列。
如果我使用"$query = $this ->db -> query ('SELECT * FROM country WHERE ID = '.$ID); "
,則沒有錯誤。
可能是什么問題呢?
像這樣嘗試...
function select_country($ID, $typec)
{
$data = '';
$this ->db ->select ('*');
$this->db->from('country');
$this ->db ->where ('ID', $ID);
$query = $this->db->get();
if ($query->num_rows()>0){
$row = $query->row();//only on row on result so no need to use `result()`
$data = $row->$typec
}
return $data;
}
更簡單的查詢:
$query = $this->db->get_where('country', array('ID' => $ID));
我不知道您是否還在尋找答案,但是請確保在開始新的數據庫查詢后不要調用select_country()函數。
基本上像這樣的東西可能會導致這個錯誤:
// Start new query using the Query-Builder
$this->db->select('*')->from('something');
// Get some additional data
$countries = $this->your_model->select_countries($your_id, $some_type);
// Execute the query
$query = $this->db->where_in('country_id', $countries)->get();
如果您這樣做,請嘗試在啟動新查詢之前調用select_countries()函數:
// FIRST: Get some additional data
$countries = $this->your_model->select_countries($your_id, $some_type);
// Start new query using the Query-Builder
$this->db->select('*')->from('something');
// Execute the query
$query = $this->db->where_in('country_id', $countries)->get();
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