django-orchestra-test/orchestra/models/fields.py

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2014-05-08 16:59:35 +00:00
from django.db import models
from django.utils.text import capfirst
from ..forms.fields import MultiSelectFormField
from ..utils.apps import isinstalled
class MultiSelectField(models.CharField):
__metaclass__ = models.SubfieldBase
def formfield(self, **kwargs):
defaults = {
'required': not self.blank,
'label': capfirst(self.verbose_name),
'help_text': self.help_text,
'choices': self.choices
}
if self.has_default():
defaults['initial'] = eval(self.get_default())
defaults.update(kwargs)
return MultiSelectFormField(**defaults)
def get_db_prep_value(self, value, connection=None, prepared=False):
if isinstance(value, basestring):
return value
elif isinstance(value, list):
return ','.join(value)
def to_python(self, value):
if value is not None:
return value if isinstance(value, list) else value.split(',')
return ''
def contribute_to_class(self, cls, name):
super(MultiSelectField, self).contribute_to_class(cls, name)
if self.choices:
def func(self, field=name, choices=dict(self.choices)):
','.join([ choices.get(value, value) for value in getattr(self, field) ])
setattr(cls, 'get_%s_display' % self.name, func)
def validate(self, value, model_instance):
arr_choices = self.get_choices_selected(self.get_choices_default())
for opt_select in value:
if (opt_select not in arr_choices):
msg = self.error_messages['invalid_choice'] % value
raise exceptions.ValidationError(msg)
return
def get_choices_selected(self, arr_choices=''):
if not arr_choices:
return False
return [ value for value,__ in arr_choices ]
if isinstalled('south'):
from south.modelsinspector import add_introspection_rules
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add_introspection_rules([], ["^orchestra\.models\.fields\.MultiSelectField"])