Add a BinaryField model field

Thanks Michael Jung, Charl Botha and Florian Apolloner for review
and help on the patch.

1 files changed, 27 insertions, 0 deletions

diff --git a/django/db/models/fields/__init__.py b/django/db/models/fields/__init__.py
index 2702876397..8302aaceaa 100644
--- a/django/db/models/fields/__init__.py
+++ b/django/db/models/fields/__init__.py
@@ -1291,3 +1291,30 @@ class URLField(CharField):
         }
         defaults.update(kwargs)
         return super(URLField, self).formfield(**defaults)
+
+class BinaryField(Field):
+    description = _("Raw binary data")
+
+    def __init__(self, *args, **kwargs):
+        kwargs['editable'] = False
+        super(BinaryField, self).__init__(*args, **kwargs)
+        if self.max_length is not None:
+            self.validators.append(validators.MaxLengthValidator(self.max_length))
+
+    def get_internal_type(self):
+        return "BinaryField"
+
+    def get_default(self):
+        if self.has_default() and not callable(self.default):
+            return self.default
+        default = super(BinaryField, self).get_default()
+        if default == '':
+            return b''
+        return default
+
+    def get_db_prep_value(self, value, connection, prepared=False):
+        value = super(BinaryField, self
+            ).get_db_prep_value(value, connection, prepared)
+        if value is not None:
+            return connection.Database.Binary(value)
+        return value