using Cakephp Restful WS with primary key different from default 'id' - web-services

Question

I want to create a Webservice in cakephp but the primary key is not id_supp but taken the default value id
this is the modal:
<?php
App::uses('AppModel', 'Model');
class Supplier extends AppModel {
var $primaryKey = 'id_supp';
this is the route
Router::mapResources(array('suppliers'));
and this is the view action
public function view($id) {
$supplier = $this->Supplier->findById($id);
$this->set(array(
'supplier' => $supplier,
'_serialize' => array('supplier')
));
}
The result when accessing the following url via GET
/suppliers/54f4dc83-0bd0-4fdd-ab8b-0a08ba3b5702.json
is:
{
"code": 500,
"url": "\/TN\/Back_rest\/suppliers\/54f4dc83-0bd0-4fdd-ab8b-0a08ba3b5702.json",
"name": "SQLSTATE[42S22]: Column not found: 1054 Unknown column 'Supplier.id' in 'where clause'",
"error": {
"errorInfo": [
"42S22",
1054,
"Unknown column 'Supplier.id' in 'where clause'"
],
"queryString": "SELECT `Supplier`.`id_supp`, `Supplier`.`company_name`, `Supplier`.`contact_name`, `Supplier`.`contact_title`, `Supplier`.`address`, `Supplier`.`postcode`, `Supplier`.`phone`, `Supplier`.`fax`, `Supplier`.`www`, `Supplier`.`active`, `Supplier`.`created`, `Supplier`.`modified` FROM `tn`.`suppliers` AS `Supplier` WHERE `Supplier`.`id` = '54f4dc83-0bd0-4fdd-ab8b-0a08ba3b5702' LIMIT 1"
}}

Answer 1

Because cakephp uses convention over configuration you should use id for your table primary id field. In your example you could find what you are looking for like this:
public function view($id = null) {
$supplier = $this->Supplier->find('first', array(
'conditions' => array(
'Supplier.id_supp' => $id
)
));
$this->set(array(
'supplier' => $supplier,
'_serialize' => array('supplier')
));
}
or like this:
public function view($id = null) {
$this->Supplier->primaryKey = $id;
$supplier = $this->Supplier->find('first');
$this->set(array(
'supplier' => $supplier,
'_serialize' => array('supplier')
));
}
or like this:
public function view($id = null) {
$supplier = $this->Supplier->findByIdSupp($id);
$this->set(array(
'supplier' => $supplier,
'_serialize' => array('supplier')
));
}
Choose what ever pleases you the most.