Integrate django model with legacy db - sql-server

Question

I understand that Django Model is pretty fussy when it comes to the absence of a primary key.
I have a legacy database (SQL Server) that I am connecting too (it is not the default one), and in that I have a database.view which I am supposed access. However, the issue is that the view does not have any primary key.
How do i enable django to query from that table without being able to modify the schema?
Here is what I did:
I created a ReadOnlyModel and got my other django model to subclass it. This was done because I wanted to bypass the django's need for PK (evidently it did work, but threw another error - see below)
class ReadOnlyModel(models.Model):
def save(self, *args, **kwargs):
pass
def delete(self, *args, **kwargs):
pass
I created an ActiveObjectManager for Django to know which database to point too. The reason i used this over a router is because the router would work best if I was creating two seperate applications in the same repo. However, I am using one application:
class Db2ActiveObjectManager(models.Manager):
def get_queryset(self):
qs = super(Db2ActiveObjectManager, self).get_queryset()
if hasattr(self.model, 'use_db'):
qs = qs.using(self.model.use_db)
return qs
Below is a sample model from the Db2:
class modelA(ReadOnlyModel):
use_db = 'db2'
objects = Db2ActiveObjectManager()
col1 = models.CharField(primary_key=True, max_length=256)
col2 = models.CharField(primary_key=True, max_length=1024)
col3 = models.CharField(primary_key=True, max_length=256)
col4 = models.CharField(primary_key=True, max_length=100)
col5 = models.CharField(max_length=256)
col6 = models.CharField(primary_key=True, max_length=50)
class Meta:
managed = False
db_table = 'db2.someTable'
#classmethod
def methodA(cls):
try:
filter_condition = {}
return cls.objects.filter(**filter_condition)
except Exception as e:
raise ValueError("Invalid input")
#classmethod
def methodB(cls):
try:
return cls.objects.raw('SQL Query Here')
# cursor = connection.cursor()
# cursor.execute('SQL Query Here')
# field_names = [field[0].lower() for field in cursor.description]
# nt_result = namedtuple('Result', field_names)
# return [nt_result(*row) for row in cursor.fetchall()]
except Exception as e:
raise
So far my current setup is throwing the following error:
django.db.utils.ProgrammingError: ('42S02', "[42S02] [Microsoft][ODBC Driver 13 for SQL Server][SQL Server]Invalid object name 'api_readonlymodel'. (208) (SQLExecDirectW)")
I seen many developers on stackoverflow re-iterating that we need to add a pk to the table/view. But i cannot make any changes to that view. I am pretty sure that there is a work around, but no matter what I have tried so far, nothing seems to work out for me yet.
Either I get the above error^ or I get an error saying that no valid column called id is found, or I get an error stating that I need a PK...
Thanks for the help