98 lines
2.9 KiB
Python
98 lines
2.9 KiB
Python
from __future__ import unicode_literals
|
|
|
|
from django.db import models
|
|
from django.utils.translation import ugettext
|
|
|
|
|
|
class ModelAttribute(object):
|
|
__registry = {}
|
|
|
|
@classmethod
|
|
def get_for(cls, model, type_names=None):
|
|
result = []
|
|
|
|
try:
|
|
for type_name, attributes in cls.__registry[model].iteritems():
|
|
if not type_names or type_name in type_names:
|
|
result.extend(attributes)
|
|
|
|
return result
|
|
except IndexError:
|
|
# We were passed a model instance, try again using the model of
|
|
# the instance
|
|
|
|
# If we are already in the model class, exit with an error
|
|
if model.__class__ == models.base.ModelBase:
|
|
raise
|
|
|
|
return cls.get_for[type(model)]
|
|
|
|
@classmethod
|
|
def get_choices_for(cls, model, type_names=None):
|
|
return [
|
|
(
|
|
attribute.name, attribute
|
|
) for attribute in cls.get_for(model, type_names)
|
|
]
|
|
|
|
@classmethod
|
|
def help_text_for(cls, model, type_names=None):
|
|
result = []
|
|
for count, attribute in enumerate(cls.get_for(model, type_names), 1):
|
|
result.append(
|
|
'{}) {}'.format(
|
|
count, unicode(attribute.get_display(show_name=True))
|
|
)
|
|
)
|
|
|
|
return ' '.join(
|
|
[ugettext('Available attributes: '), ', '.join(result)]
|
|
)
|
|
|
|
def get_display(self, show_name=False):
|
|
if self.description:
|
|
return '{} - {}'.format(
|
|
self.name if show_name else self.label, self.description
|
|
)
|
|
else:
|
|
return unicode(self.name if show_name else self.label)
|
|
|
|
def __unicode__(self):
|
|
return self.get_display()
|
|
|
|
def __init__(self, model, name, label=None, description=None, type_name=None):
|
|
self.model = model
|
|
self.label = label
|
|
self.name = name
|
|
self.description = description
|
|
|
|
for field in model._meta.fields:
|
|
if field.name == name:
|
|
self.label = field.verbose_name
|
|
self.description = field.help_text
|
|
|
|
self.__registry.setdefault(model, {})
|
|
|
|
if isinstance(type_name, list):
|
|
for single_type in type_name:
|
|
self.__registry[model].setdefault(single_type, [])
|
|
self.__registry[model][single_type].append(self)
|
|
else:
|
|
self.__registry[model].setdefault(type_name, [])
|
|
self.__registry[model][type_name].append(self)
|
|
|
|
|
|
class MissingItem(object):
|
|
_registry = []
|
|
|
|
@classmethod
|
|
def get_all(cls):
|
|
return cls._registry
|
|
|
|
def __init__(self, label, condition, description, view):
|
|
self.label = label
|
|
self.condition = condition
|
|
self.description = description
|
|
self.view = view
|
|
self.__class__._registry.append(self)
|