django update replace regex

from django.db.models import F
from django.db.models.functions import Replace

# Assuming you have a model named YourModel with a field named your_field

YourModel.objects.update(
    your_field=Replace('your_field', 'old_pattern', 'new_pattern')
)

Explanation:

1. Import necessary functions from Django:
2. F: A class that allows referencing database columns in queries.

3. Replace: A database function provided by Django to perform string replacements.

4. Use the update method on the queryset of the model (YourModel) to update records in the database.

5. Inside the update method, use the Replace function to update the values of the 'your_field' column in the 'YourModel' table.

6. Specify the field to be updated (your_field) and provide the replacement pattern using the Replace function.

7. The first parameter of Replace is the field to be updated ('your_field').

8. The second parameter is the old pattern to be replaced ('old_pattern').
9. The third parameter is the new pattern to replace the old one ('new_pattern').

Note: Make sure to replace 'YourModel' with the actual name of your Django model and 'your_field' with the actual name of the field you want to update. Adjust the old and new patterns accordingly.