Waterline one-to-many with arbitrary foreign keys -

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is possible have 1 sided one-to-many relationship between 2 models?

what i'm trying achieve plugin architecture, core app server has base set of models, specific implementation different clients can include custom data plugins.

so have notion of core entity (super-simplified):

{ identity: 'entity', attributes: { id: 'integer', type: 'string' } }

ok, i'm going add passport plugin store login credentials.

{ identity: 'passport', attributes: { id: 'integer', protocol: 'string', username: 'string', password: 'string', entity: { model: 'entity' } } }

so far good. want add user plugin, user extends entity, user can have number of passports. tried first:

{ identity: 'user', attributes: { id: 'integer', name: 'string', email: 'string', entity: { model: 'entity' }, passports: { collection: 'passport', via: 'entity' } } }

now things come unstuck in waterline (but it's reasonable data model). here's error:

trying associate collection attribute model doesn't have foreign key. user trying reference foreign key in passport

the point of exercise entity rather abstract concept, , things passport supposed add behaviour without having know concrete implementation (user) looks like. because want plugin architecture, passport can't know user explicitly.

it otherwise quite elegant solution. there way coax waterline doing want? thanks.


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