Dynamisches Multi-Tenant Datenbank-Routing über Thread-Local Kontext

import threading
from django.db import models
 
_tenant_context = threading.local()
 
def set_current_tenant_db(db_name: str):
    _tenant_context.db_name = db_name
 
def get_current_tenant_db() -> str | None:
    return getattr(_tenant_context, 'db_name', None)
 
class TenantDatabaseRouter:
    def db_for_read(self, model, **hints):
        return get_current_tenant_db() or 'default'
 
    def db_for_write(self, model, **hints):
        return get_current_tenant_db() or 'default'
 
    def allow_relation(self, obj1, obj2, **hints):
        return True
 
    def allow_migrate(self, db, app_label, model_name=None, **hints):
        return True