从实体生成Zend Framework 2和Doctrine 2数据库

Question

Is it possible to generate the database in a modular fashion ? making relations between entities available depending on which modules are loaded ?

Example Setup

• Zend framework 2
• DoctrineORMModule
• Doctrine

Modules

• User
• Group

Each module has corresponding entities which they manage. using annotations for database creation and proxy creation.

relation between user and group 1 -> many or 1 -> 1

Application 1

uses module user and group

Application 2

uses module user but not group.

is it possible to describe a relation between user and group using doctrine annotations that will be removed if a entity is not present ?

remove or add the relation when ./vendor/bin/doctrine-module orm:schema-tool:create or ./vendor/bin/doctrine-module orm:schema-tool:update is called

Answer 1

No, you shouldn't remove the annotation if a module is not loaded. You rather should look at things differently.

Seen from your setup of application 1 and 2, the user will be installed and group is depending on user. Note that for application 1, user is not depending on group. This means the relation is unidirectional : a group is aware of its users but the user is not aware of its group. As you said, the relation is also many:many. And surprisingly, Doctrine has an association mapping called many-to-many, unidirectional .

The only thing is that you can load a user's group only via the Group . You cannot do things like this:

$user   = $repository->find(1);
$groups = $user->getGroups();

The user is not aware of the groups, so it cannot load them. Instead, ask the group repository for the groups:

$user   = $userRepository->find(1);
$groups = $groupRepository->findAllByUser($user);

This will ask the group repository to find all groups where the given user is related to.