Optimize User Retrieval Logic in middleware.py and authentication.py

[khashashin]

Currently, the logic to retrieve or create a user relies on the filter method followed by first. This approach might not be as performant as using the get method directly, especially since this logic is executed frequently.

Recommendation

Consider using the get method, which is typically more efficient for retrieving single records, and handle the User.DoesNotExist exception for cases where the user is not present in the database. This will likely improve the performance of the user retrieval process.

Current Implementation

# middleware.py
# Get the Django user by its email
user = User.objects.filter(username=email).first()

# If the user doesn't exist, create it
if not user:
    User.objects.create_user(
        username=email,
        password=password,
        email=email)

# authentication.py
# Get or create a corresponding Django user
django_user = User.objects.filter(username=email).first()
if not django_user:
    User.objects.create_user(username=email, password=password, email=email)

Possible Solution

# middleware.py
try:
    # Try to get the Django user by its email
    user = User.objects.get(username=email)
except User.DoesNotExist:
    # If the user doesn't exist, create it
    User.objects.create_user(
        username=email,
        password=password,
        email=email)

# authentication.py
try:
    # Try to get the corresponding Django user
    django_user = User.objects.get(username=email)
except User.DoesNotExist:
    # If the user doesn't exist, create it
    User.objects.create_user(username=email, password=password, email=email)