How to make a query based on a view? - phalcon

Question

The standard way to make a query against a database table is to create a model and create a function within it , for example :
<?php
use Phalcon\Mvc\Model;
use Phalcon\Mvc\Model\Query;
class Client extends Model {
function lireParCritere($critere) {
$sSQL = "
SELECT c.clt_id as clt_id,c.clt_cin_pass,c.clt_nom,c.clt_prenom,c.clt_tel,
c.clt_adresse,c.clt_comment,CONCAT_WS(
' ',
c.clt_nom,
c.clt_prenom
) AS noms
FROM Client as c WHERE 1 = 1 ";
if(isset($critere["clt_id"]) && $critere["clt_id"] != "") {
$sSQL .= "AND c.clt_id = '" . $critere["clt_id"] . "' ";
}
$sSQL .= " ORDER BY noms";
$query = new Query($sSQL,$this->getDI());
$ret = $query->execute();
return $ret;
}
}
?>
What is the way to make a query against a database view ?

Answer 1

A database view is basically the output of a SQL query stored in another table. You can think of a view as an alias for a specific SQL query that you can then run other queries on top of. (kind of like SELECT * FROM (SELECT * FROM table_one, table_two, table_n);)
This means that you can treat the view as a regular table and pull from it without any issues.
So lets say you have a database view that has three columns id, col_one, col_two. You could do something similar to the following.
<?php
/**
* Model representing the database view
*/
class Example extends \Phalcon\Mvc\Model
{
public $id;
public $col_one;
public $col_two;
public function getSource()
{
return 'view_name_in_database';
}
public function columnMap()
{
return array(
'id' => 'id',
'col_one' => 'col_one',
'col_two' => 'col_two'
);
}
}
// example query on the model
$examples = Example::query()
->where('id = :id:')
->bind(array(
'id' => 55
))->execute();
?>