Sandbox Wizard Sandbox Wizard - 2 months ago 19
PHP Question

CakePHP: Retrieving records based on field in related model

I'm trying to search based on a field in a related model. I can do so with the belongsTo model, but not the hasMany model. I'm sure this is something simple I'm overlooking but I can't see it. Could someone point me in the right direction (or even the cakebook page I need - searched, but didn't find anything that looked like this). Thanks

In groups controller: (this doesn't work)

$group = $this->Group->find('all', array('conditions' => array('Voucher.id' => '55')));


This does:

$group = $this->Group->find('all', array('conditions' => array('TourOperator.id' => '3')));


Background file snippets:

Group model:

var $belongsTo = array(
'TourOperator' => array(
'className' => 'TourOperator',
'foreignKey' => 'tour_operator_id',
'conditions' => '',
'fields' => '',
'order' => ''
)
);

var $hasMany = array(
'Voucher' => array(
'className' => 'Voucher',
'foreignKey' => 'group_id',
'dependent' => true,
'conditions' => '',
'fields' => '',
'order' => 'Voucher.date, Voucher.meal_type_id'
)
);


Voucher model:

var $belongsTo = array(
'Group' => array(
'className' => 'Group',
'foreignKey' => 'group_id',
'conditions' => '',
'fields' => '',
'order' => ''
)
);


Tour Operator model:

var $hasMany = array(
'Group' => array(
'className' => 'Group',
'foreignKey' => 'tour_operator_id',
'dependent' => false,
'conditions' => '',
'fields' => '',
'order' => '',
'limit' => '',
'offset' => '',
'exclusive' => '',
'finderQuery' => '',
'counterQuery' => ''
)
);


Update (as posted in comment below, but clearer to read here)

I've ended up using this.

$groups = $this->Group->Voucher->find('all', array('fields' => 'DISTINCT group_id', 'conditions' => array('Voucher.status' => 'pending')));
$group_ids = Set::extract($groups, '/Voucher/group_id');
$data = $this->Group->find('all', array('conditions' => array('Group.id' => $group_ids)));


I get a distinct list of group IDs matching my criteria, create an array of just the IDs and then use that to pull the groups so that the arrays are ordered as I expect them in my view.

Answer

Can you recast your query to $this->Voucher->find, and then use the associated Group data returned from that query? As you say, there's no problem finding groups by their TourOperator id, and the Groups/Voucher relationship looks like it's the inverse of that.