[TYPO3-mvc] Combined mm table in extbase

[Aimo Kuenkel]

Hi there,

i have 3 tables (foo, bar, baz) and every respective model has a n:m property of "files".
now i have uid_foreign, uid_local and type field in the mm table (type defines foo, bar or baz - so that I don't need 3 mm tables).

My TCA config over MM_match_fields works fine so far:

                               'files' => array(
                                               [...],
                                               'config' => array(
                                                               'type' => 'select',
                                                               [...],
                                                               'foreign_table' => 'tx_foo_domain_model_file',
                                                               'MM' => 'tx_foo_file_mm',
                                                               'MM_match_fields' => array(
                                                                              'type' => 'Vendor\\Foo\\Domain\\Model\\Foo::files'
                                                               ),
                                                               [...],
                                               ),
                               ),

But: sometimes when a relation between foo<->files should be written it overrides an existing bar<->files relation (which it shouldn't, because the type is another).

Now my question is: Do i have to configure that additionally or can t3 just not handle this situation?
If it doesn't work, I will have to split that into multiple mm tables, but I really like the current setting.

Thanks in advance,

Aimo