CODEWITHSUNDEEP
pythondjangodjango-models
MatheusJardimB
MatheusJardimB

Reputation: 3677

Django CharField blank vs default empty

What is the difference between this two fields in a Django app? What behaviour should I expect?

field_a = CharField(max_length=50, verbose_name='field_a', blank=True)
field_b = CharField(max_length=50, verbose_name='field_b', blank=True, default='')

Upvotes: 15

Views: 10379

Answers (1)

falsetru
falsetru

Reputation: 368974

If default value is not given, empty string is used for CharField according to the following code (taken from django/db/models/fields/__init__.py source):

def get_default(self):
    """
    Returns the default value for this field.
    """
    if self.has_default():
        if callable(self.default):
            return self.default()
        return self.default
    if (not self.empty_strings_allowed or (self.null and
               not connection.features.interprets_empty_strings_as_nulls)):
        return None
    return ""

So they should behave same.

Upvotes: 24

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