setVariables() many to many relation symfony2

Question

I have a many to many relation between let's say entityA and entityB and I will use embeeded forms in order to add the attribute of entityA in the form of entityB as follows

$builder ->add('entityAs', 'entity', array(
              'class'    => 'xxxBundle:EntityA',
              'property' => 'name',
              'multiple' => false,
            ));}

When I set 'multiple' to true, everything is OK. But when I set it to false, I get the following error

Property "entityAs" is not public in class "xxx\Entity\EntityB". Maybe you should create the method "setEntityAs()"?

Answer 1

As usual the property entityAs in your EntityB class is not public (protected or private). So you have to write (or generate) a setter for it: setEntityAs($entityAs)

multiple true may work, as I think (not sure) it uses the addXxx Setter. Proof me, if you have an addEntityAs Method in your EntityB Class?

Buuuuut, if you have a many to many relation, why you would set multiple to false?