Base64Field: base64 encoding field for storing binary data in Django TextFields

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import base64

from django.db import models


class Base64Field(models.TextField):

    def contribute_to_class(self, cls, name):
        if self.db_column is None:
            self.db_column = name
        self.field_name = name + '_base64'
        super(Base64Field, self).contribute_to_class(cls, self.field_name)
        setattr(cls, name, property(self.get_data, self.set_data))

    def get_data(self, obj):
        return base64.decodestring(getattr(obj, self.field_name))

    def set_data(self, obj, data):
        setattr(obj, self.field_name, base64.encodestring(data))

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Comments

kylec (on December 16, 2010):

To store values larger than 48k, add a db_type method that returns 'longtext'.

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seafangs (on September 3, 2012):

Great snippet, thank you. Very useful in my current situation (which is: don't don't don't want to store images in a Blob, but have been more or less commanded to, as a 'holdover' or whatever).

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seafangs (on September 3, 2012):

and great tip kylec, thank you too

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