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base.py
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base.py
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from django.db import models
from django.utils.encoding import smart_unicode
from django.utils.translation import ugettext_lazy as _
class StringField(models.Field):
description = _("String")
def __init__(self, *args, **kwargs):
kwargs.setdefault('max_length', 500)
super(StringField, self).__init__(*args, **kwargs)
def get_internal_type(self):
return "TextField"
def to_python(self, value):
if isinstance(value, basestring) or value is None:
return value
return smart_unicode(value)
def get_prep_value(self, value):
return self.to_python(value)
def formfield(self, **kwargs):
defaults = {'max_length': self.max_length}
defaults.update(kwargs)
return super(StringField, self).formfield(**defaults)
def db_type(self, connection=None):
if connection and hasattr(connection, 'vendor'):
vendor = connection.vendor
else:
from django.conf import settings
name = settings.DATABASE_ENGINE.split('.')[-1].split('_')[0]
if name == 'postgis':
vendor = 'postgresql'
else:
vendor = name
if vendor == 'postgresql':
return 'character varying'
if vendor == 'mysql':
return 'VARCHAR (65528)'
if vendor == 'oracle':
return 'VARCHAR2 (4000)'
return 'TEXT'
def south_field_triple(self):
from south.modelsinspector import introspector
name = '%s.%s' % (self.__class__.__module__ , self.__class__.__name__)
args, kwargs = introspector(self)
kwargs.pop('max_length', None)
return name, args, kwargs