Django ProgrammingError «Таблица не существует» при поиске таблицы в неправильной базе данных при запуске migrate --database =

Question

У меня есть приложение Django, использующее две базы данных: default (созданное моим приложением django) и paretodb (устаревшая база данных, для которой я сделал модели, используя inspectdb).

Вот маршрутизатор:

class ParetoRouter (object):
    def db_for_read(self, model, **hints):
        "Point all operations on buyer_ladder models to 'paretodb'"
        if model._meta.app_label == 'buyer_ladder':
            return 'paretodb'
        return 'default'

    def db_for_write(self, model, **hints):
        "Point all operations on buyer_ladder models to 'paretodb'"
        if model._meta.app_label == 'buyer_ladder':
            return 'paretodb'
        return 'default'

    def allow_relation(self, obj1, obj2, **hints):
        "Allow any relation if a both models in buyer_ladder app"
        if obj1._meta.app_label == 'buyer_ladder' and obj2._meta.app_label == 'buyer_ladder':
            return True
        # Allow if neither is buyer_ladder app
        elif 'buyer_ladder' not in [obj1._meta.app_label, obj2._meta.app_label]: 
            return True
        return False

    def allow_syncdb(self, db, model):
        if db == 'paretodb' or model._meta.app_label == "buyer_ladder":
            return False # we're not using syncdb on our legacy database
        else: # but all other models/databases are fine
            return True

Вот часть login_registration.models.py:

class Company(models.Model):
    name = models.CharField(max_length=255)
    cbsa = models.CharField(max_length=5, blank=True, null=True, default=None)
    authorized_tester = models.BooleanField(default=False)
    def __str__(self):
        return self.name
    class Meta:
        app_label = "login_registration"


class User(models.Model):
    first_name = models.CharField(max_length=255)
    last_name = models.CharField(max_length=255)
    email = models.CharField(max_length=255)
    company = models.ForeignKey(
        Company, related_name="users", on_delete=models.CASCADE, default=None
    )
    password = models.CharField(max_length=255)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    objects = UserManager()

    def __repr__(self):
        return f"< User object: {self.first_name} {self.last_name}>"

    def __str__(self):
        return f"{self.first_name} {self.last_name}"

    class Meta:
        app_label = "login_registration"

и customer_ladder.models.py:

class CbsaMapping(models.Model):
    fips = models.CharField(primary_key=True, max_length=5)
    state_fips = models.CharField(max_length=255, blank=True, null=True)
    county_fips = models.CharField(max_length=255, blank=True, null=True)
    county_name = models.CharField(max_length=255, blank=True, null=True)
    fips_class_code = models.CharField(max_length=255, blank=True, null=True)
    state = models.CharField(max_length=255, blank=True, null=True)
    region_general = models.CharField(max_length=255, blank=True, null=True)
    region_audantic = models.CharField(max_length=255, blank=True, null=True)
    division = models.CharField(max_length=255, blank=True, null=True)
    county_name_experian = models.CharField(max_length=255, blank=True, null=True)
    cbsa = models.CharField(max_length=5, blank=True, null=True)
    metropolitan_division_code = models.CharField(max_length=255, blank=True, null=True)
    csa = models.CharField(max_length=5, blank=True, null=True)
    cbsa_title = models.CharField(max_length=255, blank=True, null=True)
    metro_micro = models.CharField(max_length=255, blank=True, null=True)
    metropolitan_division_title = models.CharField(max_length=255, blank=True, null=True)
    csa_title = models.CharField(max_length=255, blank=True, null=True)

    class Meta:
        managed = False
        db_table = 'cbsa_mapping'


class BuyerLadderProperty(models.Model):
    pid = models.IntegerField()
    did = models.IntegerField(primary_key=True)
    recording_date = models.DateField(blank=True, null=True)
    grantee = models.CharField(max_length=255, blank=True, null=True)
    buyer_owner_occupied = models.IntegerField(blank=True, null=True)
    situs_address = models.CharField(max_length=100, blank=True, null=True)
    situs_city = models.CharField(max_length=100, blank=True, null=True)
    situs_zip = models.CharField(max_length=5, blank=True, null=True)
    fips = models.CharField(max_length=5, blank=True, null=True)
    cbsa = models.CharField(max_length=5, blank=True, null=True)
    sale_price = models.IntegerField(blank=True, null=True)
    discount = models.FloatField(blank=True, null=True)
    estimated_value_high = models.IntegerField(blank=True, null=True)
    estimated_value_low = models.IntegerField(blank=True, null=True)
    year_built = models.IntegerField(blank=True, null=True)
    square_footage = models.IntegerField(blank=True, null=True)
    bedrooms = models.IntegerField(blank=True, null=True)
    bathrooms = models.FloatField(blank=True, null=True)
    multi_parcel = models.CharField(max_length=255, blank=True, null=True)
    lender_name = models.CharField(max_length=255, blank=True, null=True)
    document_type_description = models.CharField(max_length=255, blank=True, null=True)
    buyer_id = models.IntegerField(blank=True, null=True)
    address_line_1 = models.CharField(max_length=255, blank=True, null=True)
    address_line_2 = models.CharField(max_length=255, blank=True, null=True)
    city = models.CharField(max_length=100, blank=True, null=True)
    postal_code = models.CharField(max_length=5, blank=True, null=True)
    state = models.CharField(max_length=2, blank=True, null=True)

    class Meta:
        managed = False
        db_table = 'buyer_ladder'
        unique_together = (('pid', 'did'),)

Я запустил python manage.py makemigrations без ошибок, и то же самое с python manage.py migrate. Но когда я попробовал python manage.py migrate --database=paretodb, я получил django.db.utils.ProgrammingError: (1146, "Table 'paretodb.login_registration_company' doesn't exist")

Почему это ищет таблицу компании в paretodb? Маршрутизатор должен отправлять django на paretodb только для моделей из приложения покупателя, нет?

Кстати, я добавил часть Meta app_label=login_registration после того, как получил ошибку, надеясь, что это поможет, но это не (та же ошибка)