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我刚开始使用 Codeigniter，这让我抓狂。我有一个查询来确定用户是否购买了任何程序。然后，我必须使用该程序的类型类别来运行并确定他或她在另一个表中记录了多少次查询。很抱歉造成混乱，但希望代码有意义。

我在将两个数组从我的模型返回到我的控制器到视图中时遇到问题。

function specificPrograms() {
$specific_sql = $this->db->query("SELECT program,created FROM  `assessment`  WHERE uid = $this->uid");
if($specific_sql->num_rows() > 0) {
foreach ($specific_sql->result() as $specific) {        
$data[] = $specific;
$this->type = $specific->program;   
}
return $data;
}   

$sub_sql = $this->db->query("SELECT id FROM othertable WHERE user_id_fk = $this->uid and type = '$this->type'");
if($sub_sql->num_rows() > 0) {
foreach ($sub_sql->result() as $otherp) {       
$data[] = $otherp;
}
return $data;
}

}

然后在我的控制器中，

$data['specific'] = $this->user_model->specificPrograms();
$data['otherp'] = $this->user_model->specificPrograms();

谢谢你的帮助。

4

1 回答 1

1

根据您上面的评论，我建议使用一个查询来返回您需要的结果。其结果集将如下所示：

+----------+------------+------+
| program  | created    | uses |
+----------+------------+------+
| football | 2001-01-01 | 12   |
+----------+------------+------+
| baseball | 2007-01-01 | 21   |
+----------+------------+------+


SELECT 
  assessment.program, 
  assessment.created, 
  count(othertable.user_id) as uses
FROM  assessment
JOIN othertable 
  ON othertable.user_id_fk = assessment.uid
  AND othertable.type = assessment.program
WHERE assessment.uid = $this->uid
GROUP BY assessment.program

... model ...

function specificPrograms() {
  $results = $this->db->query($sql_from_above);
  if($specific_sql->num_rows() > 0) {
  foreach ($specific_sql->result() as $program_data) {        
    $data[] = $program_data;
  }
  return $data;
}

... meanwhile in controller ...


$programs_used = $this->user_model->specificPrograms();
foreach($programs_used as $program_use_data) {
  // On first iteration, this is true:
  // $program_use_data['program'] == "football"
  // $program_use_date['uses'] == 12
}
于 2012-07-09T03:35:08.393 回答