我有两个名为verification_details
和verification_questions
的数据库表。verification_id
在两个表中是常见的。在verification_details
表中,有一个user_id
字段,基于这个user_id
字段,一个或多个验证细节插入到verification_details
表中,基于verification_id
,一个或多个验证问题插入到verification_questions
表中。我在连接查询
function get_records() {
$this->db->select("a.criteria_question,a.criteria_answer,a.validation_statement");
$this->db->from("verification_questions as a");
$this->db->join('verification_details as b', 'a.verification_id = b.verification_id');
$query = $this->db->get();
return $query->result();
}
我想控制器代码从两个表中获取所有数据,并显示在一个表中
In Model
function get_records() {
$this->db->select("a.criteria_question,a.criteria_answer,a.validation_statement");
$this->db->from("verification_questions as a");
$this->db->join('verification_details as b', 'a.verification_id = b.verification_id');
$query = $this->db->get();
$result = $query->result_array();
return $result;
}
在控制器$data['table'] = $this->Model_name->get_records();
$this->load->view('view_name',$data);
和
<table>
<tr>
<th>Question</th>
<th>Answer</th>
<th>Validation</th>
</tr>
<?php
foreach ( $table as $new_item )
{
?>
<tr>
<td><?php echo $new_item['table field1']?></td>
<td><?php echo $new_item['table field2']?></td>
<td><?php echo $new_item['table field3']?></td>
</tr>
<?php
}
?>
</table>
您可以在模型中创建结果数组,并在控制器中使用它。
模型:
function get_records()
{
$this->db->select("a.criteria_question,a.criteria_answer,a.validation_statement");
$this->db->from("verification_questions as a");
$this->db->join('verification_details as b', 'a.verification_id = b.verification_id');
$query = $this->db->get();
$select = array();
foreach ($query->result() as $row) {
$select[] = $row;
}
if (count($select) > 0)
return $select;
return NULL;
}
你可以在控制器中使用这个函数来获取结果数组。
控制器:
$data['result']=$this->modelname->get_records();
$this->load->view('your_view', $data);
最后,你必须将结果变量传递给视图以显示在表中。
视图:
<table><tr><td>Question></td></tr>
if(count($result)>0){
foreach($result as $row){ ?>
<tr><td><?= $row->criteria_question; ?></td></tr>
<?php}
} ?>
</table>