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import decimal
import datetime
from django.conf import settings
from django.utils.translation import get_language, to_locale, check_for_language
from django.utils.importlib import import_module
from django.utils import dateformat
from django.utils import numberformat
def get_format_modules():
"""
Returns an iterator over the format modules found in the project and Django
"""
modules = []
if not check_for_language(get_language()):
return modules
locale = to_locale(get_language())
if settings.FORMAT_MODULE_PATH:
format_locations = [settings.FORMAT_MODULE_PATH + '.%s']
else:
format_locations = []
format_locations.append('django.conf.locale.%s')
for location in format_locations:
for l in (locale, locale.split('_')[0]):
try:
mod = import_module('.formats', location % l)
except ImportError:
pass
else:
# Don't return duplicates
if mod not in modules:
modules.append(mod)
return modules
def get_format(format_type):
"""
For a specific format type, returns the format for the current
language (locale), defaults to the format in the settings.
format_type is the name of the format, e.g. 'DATE_FORMAT'
"""
if settings.USE_L10N:
for module in get_format_modules():
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, get_format(format or 'DATE_FORMAT'))
def number_format(value, decimal_pos=None):
"""
Formats a numeric value using localization settings
"""
return numberformat.format(
value,
get_format('DECIMAL_SEPARATOR'),
decimal_pos,
get_format('NUMBER_GROUPING'),
get_format('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_L10N:
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(get_format('DATETIME_INPUT_FORMATS')[0])
elif isinstance(value, datetime.date):
if not is_input:
return date_format(value)
else:
return value.strftime(get_format('DATE_INPUT_FORMATS')[0])
elif isinstance(value, datetime.time):
if not is_input:
return date_format(value, 'TIME_FORMAT')
else:
return value.strftime(get_format('TIME_INPUT_FORMATS')[0])
return value
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