cmsmanage/paperwork/routers.py

from .models import Member


class PaperworkRouter:
    app_label = 'paperwork'
    db = 'cms'

    def db_for_read(self, model, **hints):
        if model._meta.app_label == self.app_label:
            return self.db
        return None

    def db_for_write(self, model, **hints):
        if model._meta.app_label == self.app_label:
            return self.db
        return None

    def allow_relation(self, obj1, obj2, **hints):
        if (isinstance(obj1, Member) and obj2._meta.app_label == self.app_label) or \
           (isinstance(obj2, Member) and obj1._meta.app_label == self.app_label):
            return True
        return None

    def allow_migrate(self, db, app_label, model_name=None, **hints):
        if db == self.db:
            return False
        return None


# TODO: this is pretty hacky/special cased
class MembershipWorksRouter:
    db = 'membershipworks'

    def db_for_read(self, model, **hints):
        if model == Member:
            return self.db
        return None

    def db_for_write(self, model, **hints):
        if model == Member:
            return self.db
        return None

    def allow_relation(self, obj1, obj2, **hints):
        return None

    def allow_migrate(self, db, app_label, model_name=None, **hints):
        if db == self.db:
            return False
        return None