Convert inner join value to String - CodeIgniter - php

Question

I am working in a school project using some CodeIgniter and I had a little problem while making a view.
Basically, I need to print a column value in the screen and, in order to get this value, I had to use an inner join.
form_label($this->db->query("SELECT DISTINCT(MATERIA.NOME) FROM MATERIA INNER JOIN TURMA_has_MATERIA ON
TURMA_has_MATERIA.MATERIA_idMATERIA = MATERIA.idMATERIA
WHERE MATERIA.idMATERIA = " . $thm->MATERIA_idMATERIA), "txt_1i")
The query works just fine when I use it in phpMyAdmin but it returns an array when used in a CodeIgniter view, resulting in an error. Is there any function that could help me to convert this value to something that could be printed? Thank you.

Answer 1

this is how I normally do joins and then print it in Codeigniter
[model]
function get_tutor_info($data) {
$this->db->select('t1.id, t1.name, t2.nationality, t6.qualification');
$this->db->from('user t1');
$this->db->join('nationality t2', 't2.id = t1.nationality_id', 'inner');;
$this->db->join('qualification t6', 't6.id = t4.qualification_id', 'inner');
$this->db->where('t1.id', $data['tutor_id']);
$query = $this->db->get();
return $query->result_array();
}
[NOTE] If you want to get an object instead of getting an array change the return at the top as such.
$query = $this->db->get();
$ret = $query->row();
return $ret->campaign_id;
[view]
<?php foreach($query as $row): ?>
<tr>
<td><?php echo $row->id; ?></td>
<td><?php echo $row->name; ?></td>
<td><?php echo $row->nationality; ?></td>
<td><?php echo $row->qualification; ?></td>
</tr>
<?php endforeach; ?>
If you want to know more about how to manipulate the results please refer to the codeigniter documentation
Hope this helped.