從包含數組的foreach中插入數據

Question

我正在使用codeigniter框架，並且我試圖從表單保存數據時遇到了一些問題。

如何爲每個包含其他信息的user_answer插入一個新行？

謝謝！

這是在控制我的foreach循環和調用模型

foreach($_POST as $key => $val) 
     { 
      $data[$key] = $this->input->post($key); 
     } 
$this->quiz_model->save_answers($data); 

這是模型

function save_answers($data) 
    { 
      foreach ($data['user_answer'] as $key) { 
        $this->db->insert('answer', $data); 
      }  
    } 

表被設置爲

• answer_id（自動遞增）
• quiz_id
• question_id
• USER_ID
• user_answer

瓦爾轉儲

data => array(3) { ["user_id"]=> string(9) "anonymous" ["quiz_id"]=> string(2) "24" ["question_id"]=> string(2) "18" ["user_answer"]=> array(3) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" } } 

data['user_answers'] => array(3) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" } 

錯誤

Error Number: 1054 

Unknown column 'Array' in 'field list' 

INSERT INTO `answer` (`user_id`, `quiz_id`, `question_id`, `user_answer`) VALUES ('anonymous', '24', Array) 

Answer 1

您應該創建新組每user_answer數據。試試這個：

function save_answers($data) 
{ 
     foreach ($data['user_answer'] as $key) { 
       $new_data = array('user_id' => $data['user_id'], 'quiz_id' => $data['quiz_id'], 'question_id' => $data['question_id'], 'user_answer' => $key) 
       $this->db->insert('answer', $new_data); 
     }  
} 

Answer 2

你有問題foreach循環。您save_answers方法更改爲：

function save_answers($data) 
{ 
     foreach ($data['user_answer'] as $key=>$value) { //<------------change here 
       $data_insert = array('user_id'=>$data['user_id'],'quiz_id'=>$date['quiz_id'],'question_id'=>$data['question_id'],'user_answer'=>$value); //create new array 
       $this->db->insert('answer', $data_insert);//<------------change here 
     }  
}