[Python] Django models migration gets generated after managed set to False

In my django project, the models Form, FormSubmission, CmsEvent are in a postgres database and the models CmsEventOrder, CmsEventPayment are in another postgres database.

When I makemigrations, the migrations is created for all the models, while it should only be created for CmsEventOrder and CmsEventPayment

Now the models CmsEventOrder and CmsEventPayment have a foreign key to the other 3 models. But the other 3 models have managed false, now do I reference them? Is the migrations getting generated because of the foreign keys?

This is my view

class CreateOrderView(APIView):
def post(self, request):
try:
# Extract data from request
amount = int(request.data.get('amount', 0)) * \
100 # Convert to paise
currency = request.data.get('currency', 'INR')
receipt_id = "receipt_id_" + ''.join(random.choices(
string.ascii_letters + string.digits, k=12))
notes = request.data.get('notes', {})
event_id = request.data.get('event_id')
form_submission_id = request.data.get('form_submission_id')

if amount <= 0:
return Response({"error": "Amount must be greater than zero."}, status=status.HTTP_400_BAD_REQUEST)

# Validate event and form submission
event = get_object_or_404(CmsEvent, id=event_id)
form_submission = get_object_or_404(
FormSubmission, id=form_submission_id)

# Initialize Razorpay client
client = get_razorpay_client()

# Create an order
order_data = {
'amount': amount,
'currency': currency,
'receipt': receipt_id,
'notes': notes
}
order = client.order.create(order_data)

# Save order to database
CmsEventOrder.objects.create(
order_id=order['id'],
receipt_id=receipt_id,
# Convert back to original currency
amount=order['amount'] / 100,
amount_due=order['amount_due'] / 100,
currency=order['currency'],
status=order['status'],
notes=notes,
event=event,
form_submission=form_submission
)

return Response(order, status=status.HTTP_201_CREATED)

except Exception as e:
logger.error("Failed to create order", error=str(e))
return Response({"error": str(e)}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)


And this below is my models

class Form(models.Model):
id = models.AutoField(primary_key=True)
title = models.CharField(max_length=255, help_text="Enter the form title")
submit_button_label = models.CharField(
max_length=255, help_text="Enter the submit button label (e.g., Submit, Register)"
)
confirmation_type = models.CharField(
max_length=10,
choices=ConfirmationType.choices,
help_text="Select the type of confirmation after form submission"
)
confirmation_message = models.JSONField(
blank=True,
null=True,
help_text="Provide a confirmation message in JSON format if confirmation type is 'Message'"
)
redirect_url = models.URLField(
max_length=2048,
blank=True,
null=True,
help_text="Provide a redirect URL if confirmation type is 'Redirect'"
)
updated_at = models.DateTimeField(
auto_now=True, help_text="Timestamp when the form was last updated"
)
created_at = models.DateTimeField(
auto_now_add=True, help_text="Timestamp when the form was created"
)

class Meta:
app_label = "cms"
db_table = "forms"
managed = False
verbose_name = _("Form")
verbose_name_plural = _("Forms")

def __str__(self):
return self.title

class FormSubmission(models.Model):
id = models.AutoField(primary_key=True)
form = models.ForeignKey(
Form,
on_delete=models.CASCADE,
related_name='submissions',
help_text="Reference to the associated form"
)
updated_at = models.DateTimeField(
auto_now=True,
help_text="Timestamp when the submission was last updated"
)
created_at = models.DateTimeField(
auto_now_add=True,
help_text="Timestamp when the submission was created"
)

class Meta:
app_label = "cms"
db_table = "form_submissions"
managed = False
verbose_name = "Form Submission"
verbose_name_plural = "Form Submissions"

def __str__(self):
return f"Submission {self.id} for Form {self.form_id}"

class CmsEvent(models.Model):
id = models.AutoField(primary_key=True)
event_uuid = models.CharField(
max_length=36, unique=True, editable=False, help_text="Read-only UUID for the event"
)
name = models.CharField(
max_length=128, help_text="Enter the name of the event")
description = models.JSONField(
default=dict, help_text="Provide a detailed description of the event")
image = models.ForeignKey(
"Media", on_delete=models.CASCADE, related_name="events", help_text="Select the event image"
)
venue = models.CharField(max_length=255, blank=True,
null=True, help_text="Enter the venue name (optional)")
city = models.CharField(max_length=255, blank=True,
null=True, help_text="Enter the city (optional)")
locality = models.CharField(
max_length=255, blank=True, null=True, help_text="Enter the locality (optional)")
google_maps_link = models.URLField(
validators=[URLValidator()], help_text="Enter the Google Maps link for the event")
google_form_link = models.URLField(
validators=[URLValidator()], help_text="Enter the Google Maps link for the event")
payment_link = models.URLField(
validators=[URLValidator()], help_text="Enter the Google Maps link for the event")
is_online = models.BooleanField(
default=False, help_text="Check this if the event is only an online event.")
is_online_and_offline = models.BooleanField(
default=False, help_text="Check this if an offline event is also streamed online.")

start_date = models.DateTimeField(
help_text="Event start date with time and timezone")
end_date = models.DateTimeField(
blank=True, null=True, help_text="Event end date with time and timezone")

start_time = models.CharField(
max_length=10, blank=True, null=True, help_text="Enter the start time (e.g., HH:MM)")
end_time = models.CharField(
max_length=10, blank=True, null=True, help_text="Enter the end time (e.g., HH:MM)")

deleted = models.BooleanField(
default=False, help_text="Mark this if the event is deleted.")
is_online = models.BooleanField(
default=False, help_text="Check this if the event is an online event.")
location = models.JSONField(
default=dict, help_text="Provide structured location data for the event")
form = models.ForeignKey(
Form, on_delete=models.SET_NULL, blank=True, null=True, related_name="events",
help_text="Select the associated form for the event"
)
price = models.IntegerField(blank=False, null=False,
validators=[MinValueValidator(0)],
help_text="Enter the price of the event"
)

class Meta:
app_label = "cms"
db_table = "events"
managed = False
verbose_name = _("CMS Event")
verbose_name_plural = _("CMS Events")

def __str__(self):
return self.name


class CmsEventOrder(models.Model):
order_id = models.CharField(
max_length=255, unique=True) # Razorpay order ID
receipt_id = models.CharField(max_length=255, null=True, blank=True)
amount = models.DecimalField(max_digits=10, decimal_places=2)
amount_paid = models.DecimalField(
max_digits=10, decimal_places=2, default=0)
amount_due = models.DecimalField(
max_digits=10, decimal_places=2, default=0)
currency = models.CharField(max_length=10, default='INR')
attempts = models.PositiveIntegerField(default=0)
status = models.CharField(max_length=20, choices=[
('created', 'Created'),
('paid', 'Paid'),
('failed', 'Failed')
], default='created')
# Store event data or other notes
notes = models.JSONField(null=True, blank=True)
form = models.ForeignKey(
Form, on_delete=models.SET_NULL, null=True, blank=True, related_name="orders",
help_text="Associated form for the event order"
)
event = models.ForeignKey(
CmsEvent, on_delete=models.CASCADE, related_name="orders",
help_text="Associated event for the order"
)
form_submission = models.ForeignKey(
FormSubmission,
on_delete=models.SET_NULL,
null=True,
blank=True,
related_name="cms_event_orders",
help_text="Reference to the associated form submission"
)
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)

class Meta:
managed = True
verbose_name = "CMS Event Order"
verbose_name_plural = "CMS Event Orders"

class CmsEventPayment(models.Model):
order = models.ForeignKey(
CmsEventOrder, on_delete=models.CASCADE, related_name='cmseventpayment')
payment_id = models.CharField(
max_length=255, unique=True)
status = models.CharField(max_length=20, choices=[
('created', 'Created'),
('captured', 'Captured'),
('failed', 'Failed')
], default='created')
payment_verified = models.BooleanField(default=False)
paid_at = models.DateTimeField(null=True, blank=True)
form = models.ForeignKey(
Form, on_delete=models.SET_NULL, null=True, blank=True, related_name="payments",
help_text="Associated form for the event payment"
)
event = models.ForeignKey(
CmsEvent, on_delete=models.CASCADE, related_name="payments",
help_text="Associated event for the payment"
)
form_submission = models.ForeignKey(
FormSubmission,
on_delete=models.SET_NULL,
null=True,
blank=True,
related_name="cms_event_payments",
help_text="Reference to the associated form submission"
)
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)

def is_successful(self):
return self.status == 'captured'

class Meta:
managed = True
verbose_name = "CMS Event Payment"
verbose_name_plural = "CMS Event Payments"


And this is my DB router

import structlog

logger = structlog.get_logger("db_router")

class TerrumCMSRouter:
"""
A database router to direct read operations to the 'terrum_cms' database
and prevent any write operations for models in the 'cms' app.
"""

def db_for_read(self, model, **hints):
if model._meta.app_label == "cms":
logger.debug(f"Read operation routed to 'terrum_cms' for model '{model.__name__}'")
return "terrum_cms"
return None

def db_for_write(self, model, **hints):
if model._meta.app_label == "cms":
logger.warning(f"Write operation blocked for model '{model.__name__}' in app 'cms'")
return None
return None

def allow_relation(self, obj1, obj2, **hints):
db_list = {"default", "terrum_cms"}
if obj1._state.db in db_list and obj2._state.db in db_list:
return True
return False

def allow_migrate(self, db, app_label, model_name=None, **hints):
if app_label == "cms" and db == "terrum_cms":
logger.warning(f"Migrations disallowed for app 'cms' in database 'terrum_cms'")
return False
return True


Below are the migration files that get generated with the command python3 manage.py makemigrations payments

Migrations file under app/payments

# Generated by Django 5.1.7 on 2025-03-22 18:19

import django.db.models.deletion
from django.db import migrations, models


class Migration(migrations.Migration):

initial = True

dependencies = [
("cms", "0001_initial"),
]

operations = [
migrations.CreateModel(
name="CmsEventOrder",
fields=[
(
"id",
models.BigAutoField(
auto_created=True,
primary_key=True,
serialize=False,
verbose_name="ID",
),
),
("order_id", models.CharField(max_length=255, unique=True)),
("receipt_id", models.CharField(blank=True, max_length=255, null=True)),
("amount", models.DecimalField(decimal_places=2, max_digits=10)),
(
"amount_paid",
models.DecimalField(decimal_places=2, default=0, max_digits=10),
),
(
"amount_due",
models.DecimalField(decimal_places=2, default=0, max_digits=10),
),
("currency", models.CharField(default="INR", max_length=10)),
("attempts", models.PositiveIntegerField(default=0)),
(
"status",
models.CharField(
choices=[
("created", "Created"),
("paid", "Paid"),
("failed", "Failed"),
],
default="created",
max_length=20,
),
),
("notes", models.JSONField(blank=True, null=True)),
("created_at", models.DateTimeField(auto_now_add=True)),
("updated_at", models.DateTimeField(auto_now=True)),
(
"event",
models.ForeignKey(
help_text="Associated event for the order",
on_delete=django.db.models.deletion.CASCADE,
related_name="orders",
to="cms.cmsevent",
),
),
(
"form",
models.ForeignKey(
blank=True,
help_text="Associated form for the event order",
null=True,
on_delete=django.db.models.deletion.SET_NULL,
related_name="orders",
to="cms.form",
),
),
(
"form_submission",
models.ForeignKey(
blank=True,
help_text="Reference to the associated form submission",
null=True,
on_delete=django.db.models.deletion.SET_NULL,
related_name="cms_event_orders",
to="cms.formsubmission",
),
),
],
options={
"verbose_name": "CMS Event Order",
"verbose_name_plural": "CMS Event Orders",
"managed": True,
},
),
migrations.CreateModel(
name="CmsEventPayment",
fields=[
(
"id",
models.BigAutoField(
auto_created=True,
primary_key=True,
serialize=False,
verbose_name="ID",
),
),
("payment_id", models.CharField(max_length=255, unique=True)),
(
"status",
models.CharField(
choices=[
("created", "Created"),
("captured", "Captured"),
("failed", "Failed"),
],
default="created",
max_length=20,
),
),
("payment_verified", models.BooleanField(default=False)),
("paid_at", models.DateTimeField(blank=True, null=True)),
("created_at", models.DateTimeField(auto_now_add=True)),
("updated_at", models.DateTimeField(auto_now=True)),
(
"event",
models.ForeignKey(
help_text="Associated event for the payment",
on_delete=django.db.models.deletion.CASCADE,
related_name="payments",
to="cms.cmsevent",
),
),
(
"form",
models.ForeignKey(
blank=True,
help_text="Associated form for the event payment",
null=True,
on_delete=django.db.models.deletion.SET_NULL,
related_name="payments",
to="cms.form",
),
),
(
"form_submission",
models.ForeignKey(
blank=True,
help_text="Reference to the associated form submission",
null=True,
on_delete=django.db.models.deletion.SET_NULL,
related_name="cms_event_payments",
to="cms.formsubmission",
),
),
(
"order",
models.ForeignKey(
on_delete=django.db.models.deletion.CASCADE,
related_name="cmseventpayment",
to="payments.cmseventorder",
),
),
],
options={
"verbose_name": "CMS Event Payment",
"verbose_name_plural": "CMS Event Payments",
"managed": True,
},
),
]


I've crossed the character limit, so here is the migration file under app/cms on pastebin

https://pastebin.com/sdQ0wZCG

I could get it if it created migrations for the models CmsEvent, Form, FormSubmission but it even creates for Media, ShoppingCategory, Brand and BrandRelationship

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