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import decimal
import datetime
from django.conf import settings
from django.utils.translation import get_language
from django.utils.importlib import import_module
from django.utils import dateformat
from django.utils import numberformat
def project_formats_module():
"""
Returns the formats module for the current locale, defined
on the project
"""
if settings.FORMAT_MODULE_PATH:
try:
return import_module('.formats', '%s.%s' % (settings.FORMAT_MODULE_PATH, get_language()))
except ImportError:
pass
return None
def django_formats_module():
"""
Returns the formats module for the current locale, defined
on Django
"""
try:
return import_module('.formats', 'django.conf.locale.%s' % get_language())
except ImportError:
return None
def getformat(format_type):
"""
For a specific format type, returns the format for the
current language (locale) defaulting to the format on settings.
format_type is the name of the format, for example 'DATE_FORMAT'
"""
if settings.USE_I18N and settings.USE_FORMAT_I18N:
for module in (project_formats_module(), django_formats_module()):
if module:
try:
return getattr(module, format_type)
except AttributeError:
pass
return getattr(settings, format_type)
def date_format(value, format=None):
"""
Formats a datetime.date or datetime.datetime object using a
localizable format
"""
return dateformat.format(value, getformat(format or 'DATE_FORMAT'))
def number_format(value, decimal_pos=None):
"""
Formats a numeric value using localization settings
"""
return numberformat.format(
value,
getformat('DECIMAL_SEPARATOR'),
decimal_pos,
getformat('NUMBER_GROUPING'),
getformat('THOUSAND_SEPARATOR'),
)
def localize(value, is_input=False):
"""
Checks value, and if it has a localizable type (date,
number...) it returns the value as a string using
current locale format
"""
if settings.USE_I18N and settings.USE_FORMAT_I18N:
if isinstance(value, decimal.Decimal):
return number_format(value)
elif isinstance(value, float):
return number_format(value)
elif isinstance(value, int):
return number_format(value)
elif isinstance(value, datetime.datetime):
if not is_input:
return date_format(value, 'DATETIME_FORMAT')
else:
return value.strftime(getformat('DATETIME_INPUT_FORMATS')[0])
elif isinstance(value, datetime.date):
if not is_input:
return date_format(value)
else:
return value.strftime(getformat('DATE_INPUT_FORMATS')[0])
elif isinstance(value, datetime.time):
if not is_input:
return date_format(value, 'TIME_FORMAT')
else:
return value.strftime(getformat('TIME_INPUT_FORMATS')[0])
return value
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