Check if hasMany has been defined

Hi,

I have two Models:

  • ModelA has an hasMany relationship to ModelB with alias ModelBs
  • ModelB has, of course, a belongsTo relationship to ModelA with alias ModelA

So, in my DB, table modelb has a foreign key called modelaid to table modela.

Every ModelA MUST have at least one ModelB.

When I create a new ModelA, how can I check if at least one ModelB has been defined?

I implemented the method beforeValidationOnCreate on ModelA where I perform this check. I don't need to check inside beforeValidation because inside ModelB I return false on method delete().

So, inside beforeValidationOnCreate() in ModelA I tried to check the following:

  • If $this->ModelBs is set ( isset() ) not empty: it doesn't work. ModelBs is always a Resultset\Simple.
  • if $this->ModelBs->count() is greater than 0: it always is (on create), even when a ModelB instance is passed.

How can I do that?

Thank you.



1.1k

Hi,

count or sizeof are the good way :

class ModelA extends \Phalcon\Mvc\Model{
    public function beforeValidationOnCreate(){
        return sizeof($this->ModelBs)>0;
    }


3.4k

count and sizeof always return 0 because the resultset doesn't contain any proper instance of any already existing model.



1.1k

if you add an instance of ModelB in modelBs, count returns well 1, and creation is possible

$arrayOfBs=array(new ModelB());
$modelA->modelBs=$arrayOfBs;
$modelA->create();