Model property in Django

From 2019Written in 2019. The ideas may still hold, but check the current docs for newer details.

Model property in Django

When you want to associate field with some function you can override save() method. Another convenient way to do this is to use Python property getter/setter to run some custom code. Important thing is that you don’t have to run migrations to do this (if tables are not changed of course)

python

class TestCase(models.Model):
    TEST_STATUS_CHOICES = (
        ("passed", "passed"),
        ("failed", "failed"),
        ("unknown", "unknown"),
        ("error", "error"),
    )

    _status = models.CharField(
        max_length=9, choices=TEST_STATUS_CHOICES, default="unknown", db_column="status"
    )

    @property
    def status(self):
        return self._status

    @status.setter
    def status(self, value):
        if value in ["passed", "failed", "unknown"]:
            self._status = value
        else:
            self.scenario.status = "error"
            self._status = "error"
        self.save()

Model property in Django

Model property in Django

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More essays on Python

Model property in Django#

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More essays on Python

Model property in Django

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