CODEWITHSUNDEEP
djangomodel
eugene
eugene

Reputation: 41725

what is function_foo.boolean = True in django's model?

Following is a code from https://github.com/jeffbowen/django-logicaldelete/blob/master/logicaldelete/models.py

I am trying to understand what active.boolean = True does in the code. 

class Model(models.Model):
    """
    This base model provides date fields and functionality to enable logical
    delete functionality in derived models.
    """

    date_created  = models.DateTimeField(default=timezone.now)
    date_modified = models.DateTimeField(default=timezone.now)
    date_removed  = models.DateTimeField(null=True, blank=True)

    objects = managers.LogicalDeletedManager()

    def active(self):
        return self.date_removed == None
    active.boolean = True  # <------------------- HERE

    def delete(self):
        self.date_removed = timezone.now
        self.save()

    class Meta:
        abstract = True

Upvotes: 1

Views: 47

Answers (1)

Daniel Roseman
Daniel Roseman

Reputation: 599778

In Python, functions and methods are objects like anything else. This code is simply adding an attribute boolean to the active function, which can be used elsewhere in the code. It doesn't have any significance in and of itself.

In this case, it's used by the admin list display code, to display a nice icon in the list instead of True/False.

Upvotes: 3

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