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@@ -0,0 +1,44 @@
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+from netaddr import EUI, mac_unix_expanded
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+
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+from django.core.exceptions import ValidationError
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+from django.db import models
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+
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+from .formfields import MACAddressFormField
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+
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+
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+class mac_unix_expanded_uppercase(mac_unix_expanded):
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+ word_fmt = '%.2X'
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+
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+
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+class MACAddressField(models.Field):
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+ description = "PostgreSQL MAC Address field"
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+
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+ def python_type(self):
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+ return EUI
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+
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+ def from_db_value(self, value, expression, connection, context):
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+ return self.to_python(value)
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+
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+ def to_python(self, value):
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+ if not value:
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+ return value
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+ try:
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+ return EUI(value, dialect=mac_unix_expanded_uppercase)
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+ except ValueError as e:
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+ raise ValidationError(e)
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+
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+ def db_type(self, connection):
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+ return 'macaddr'
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+
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+ def get_prep_value(self, value):
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+ if not value:
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+ return None
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+ return str(self.to_python(value))
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+
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+ def form_class(self):
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+ return MACAddressFormField
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+
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+ def formfield(self, **kwargs):
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+ defaults = {'form_class': self.form_class()}
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+ defaults.update(kwargs)
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+ return super(MACAddressField, self).formfield(**defaults)
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