php - Doctrine2 one-to-one correctly done -

i have entity, a. , 1 b.

a={id,name} b={id,details}

i want one-to-one relation. each x there must 1 y b , reverse. thought solutions , came following.

1. id shared.

but like. a={same_id,name} b={same_id,details} same_id unique

but want able details a. doing $a->getab()->getdetails(); means need implement 2).

but sounds counterintuitive since mean, 1 must first create new b entity , create entity , point b entity.

which looks b owns - , not want.

and in reverse - if b has foreign key a, can still tell b's existence, can $a->getab()->getdetails(); ?

so like: a={id,name,bid} b={bid,details} bid unique, id unique

but in way - seems wasting column a. b won't know it's attached perhaps bad practice.

edit: doesn't solve problem, noticed must again first create b, since x needs point valid y b.

currently generating xml mappings , entity classes mysql database.

could generation won't automatically tell if b has foreign key it?

one-to-one, bidirectional association you're looking (something example in point 2).
, yes - owning important. please read concepts of owning , inverse sides of associations.
i'd in example a owning side - has name. name more significant details.

there's no problem create both entities @ same time;

$a = new a(); $a->setname("alpha");  $b = new b(); $b->setdetails("alpha goes first");  $a->setb($b); $em->persist($a)->flush();

and both entities aware of counterpart:

$a->getb(); $b->geta();

again - there must owning side , must maintain logic.