How can I allow django admin to set a field to NULL?

by

Try to overwrite the save() method of the Model, to check for empty values:

class MyModel(models.Model):

    my_nullable_string = models.CharField(max_length=15, null=True, blank=True)

    def save(self, *args, **kwargs):
         if not self.my_nullable_string:
              self.my_nullable_string = None
         super(MyModel, self).save(*args, **kwargs)

Related Contents:

  1. How to see the raw SQL queries Django is running?
  2. Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields?
  3. Django auto_now and auto_now_add
  4. Django Admin – change header ‘Django administration’ text
  5. Setting Django up to use MySQL
  6. Can’t connect to local MySQL server through socket ‘/tmp/mysql.sock
  7. MySQL “incorrect string value” error when save unicode string in Django
  8. How to override and extend basic Django admin templates?
  9. sql “LIKE” equivalent in django query
  10. How to run Django’s test database only in memory?
  11. Resize fields in Django Admin
  12. DateTimeField doesn’t show in admin system
  13. Default filter in Django admin
  14. What is the easiest way to clear a database from the CLI with manage.py in Django?
  15. django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: No module named MySQLdb
  16. model not showing up in django admin
  17. Error loading MySQLdb Module ‘Did you install mysqlclient or MySQL-python?’
  18. Importing data from a MySQL database into a Pandas data frame including column names [duplicate]
  19. How to add custom search box in Django-admin?
  20. In the Django admin interface, is there a way to duplicate an item?
  21. Django Admin: Using a custom widget for only one model field
  22. Not able to create super user with Django manage.py
  23. Django Admin: OneToOne Relation as an Inline?
  24. Overriding the save method in Django ModelForm
  25. one-to-many inline select with django admin
  26. Custom Filter in Django Admin on Django 1.3 or below
  27. Raw SQL queries in Django views
  28. Can you change a field label in the Django Admin application?
  29. Not all parameters were used in the SQL statement (Python, MySQL)
  30. What is the SQL ”LIKE” equivalent on Django ORM queries?
  31. Force django-admin startproject if project folder already exists
  32. How to check (in template) if user belongs to a group
  33. Django Admin nested inline
  34. pip install mysqlclient returns “fatal error C1083: Cannot open file: ‘mysql.h’: No such file or directory
  35. “No installed app with label ‘admin'” running Django migration. The app is installed correctly
  36. Custom validation in Django admin
  37. Adding model-wide help text to a django model’s admin form
  38. How to set another Inline title in Django Admin?
  39. Disable link to edit object in django’s admin (display list only)?
  40. Django admin: How to display the field marked as “editable=False” in the model?
  41. How to override css in Django Admin?
  42. Aggregating save()s in Django?
  43. Simple Subquery with OuterRef
  44. Remove the default delete action in Django admin
  45. Django F expressions joined field
  46. Install mysql-python (Windows)
  47. How to translate a model label in Django Admin?
  48. Ordering admin.ModelAdmin objects in Django Admin
  49. What is PyMySQL and how does it differ from MySQLdb? Can it affect Django deployment?
  50. How to change Django Admin Custom list field label?

Leave a Comment