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# -*- coding: utf-8 -*-
import datetime
from json import dumps as json_dumps
import logging
from django import forms
from django.forms.utils import flatatt
from django.forms.widgets import DateTimeInput
from django.utils.safestring import mark_safe
from django.utils import translation
from django.utils.html import conditional_escape
from django.utils.encoding import force_str
logger = logging.getLogger(__name__)
DATE_FORMAT = {
'fr': "dd/mm/yyyy",
'en': "yyyy/mm/dd",
}
DATE_INPUT_FORMATS = ['%d/%m/%Y', '%Y/%m/%d', '%Y-%m-%d']
class DatePicker(DateTimeInput):
class Media:
class JSFiles(object):
def __iter__(self):
yield 'js/bootstrap-datepicker.js'
lang = translation.get_language()
if lang:
lang = lang.lower()
# language name with length > 2 or containing uppercase
lang_map = {
'en-au': 'en-AU',
'en-gb': 'en-GB',
'en-us': 'en-us',
'fr-CH': 'fr-CH',
'it-ch': 'it-CH',
'nl-be': 'nl-BE',
'pt-br': 'pt-BR',
'rs-latin': 'rs-latin',
'sr-latin': 'sr-latin',
'zh-cn': 'zh-CN',
'zh-tw': 'zh-TW',
}
if len(lang) > 2:
if lang in lang_map:
lang = lang_map[lang]
else:
lang = lang.split("-")[0]
if lang not in ('en', 'en-us'):
yield 'js/locales/bootstrap-datepicker.%s.min.js' % (
lang)
js = list(JSFiles())
css = {'all': ('css/bootstrap-datepicker3.standalone.min.css',), }
# http://bootstrap-datepicker.readthedocs.org/en/stable/options.html#format
# http://docs.python.org/2/library/datetime.html#strftime-strptime-behavior
format_map = (
('dd', r'%d'),
('DD', r'%A'),
('D', r'%a'),
('MM', r'%B'),
('M', r'%b'),
('mm', r'%m'),
('yyyy', r'%Y'),
('yy', r'%y'),
)
@classmethod
def conv_datetime_format_py2js(cls, frmat):
for js, py in cls.format_map:
frmat = frmat.replace(py, js)
return frmat
@classmethod
def conv_datetime_format_js2py(cls, frmat):
for js, py in cls.format_map:
frmat = frmat.replace(js, py)
return frmat
html_template = """
<div%(div_attrs)s>
<input%(input_attrs)s/>
<span class="input-group-append">
<span class="input-group-text">
<span%(icon_attrs)s></span>
</span>
</span>
</div>"""
js_template = '''
<script>
(function() {
var callback = function() {
$(function(){$("#%(picker_id)s:has(input:not([readonly],[disabled]))").datepicker(%(options)s);});
};
callback();
})();
</script>'''
def __init__(self, attrs=None, frmat=None, options=None, div_attrs=None,
icon_attrs=None):
if not icon_attrs:
icon_attrs = {'class': 'fa fa-calendar fa-2'}
if not div_attrs:
div_attrs = {'class': 'input-group date'}
if frmat is None and options and options.get('format'):
frmat = self.conv_datetime_format_js2py(options.get('format'))
super().__init__(attrs, frmat)
if 'class' not in self.attrs:
self.attrs['class'] = 'form-control'
self.div_attrs = div_attrs and div_attrs.copy() or {}
self.icon_attrs = icon_attrs and icon_attrs.copy() or {}
self.picker_id = self.div_attrs.get('id') or None
self.options = options and options.copy() or {}
if frmat and not self.options.get('format') and not self.attrs.get(
'date-format'):
self.options['format'] = self.conv_datetime_format_py2js(frmat)
def format_value(self, value):
if not self.options.get('format'):
logger.debug('datepicker: format not defined')
return str(value)
py_format = self.conv_datetime_format_js2py(self.options['format'])
if not hasattr(value, 'strftime'):
value = str(value)
try:
value = datetime.datetime.strptime(value, '%Y-%m-%d')
except ValueError:
logger.debug('datepicker: cannot extract date from %s' % value)
return str(value)
value = value.strftime(py_format)
return value
def render(self, name, value, attrs=None, renderer=None):
if value is None:
value = ''
extra_attrs = dict()
extra_attrs['type'] = self.input_type
extra_attrs['name'] = name
input_attrs = self.build_attrs(attrs, extra_attrs)
if value != '':
# Only add the 'value' attribute if a value is non-empty.
input_attrs['value'] = force_str(self.format_value(value))
input_attrs = {key: conditional_escape(val)
for key, val in input_attrs.items()}
if not self.picker_id:
self.picker_id = (
input_attrs.get('id', '') + '_pickers'
).replace(' ', '_')
self.div_attrs['id'] = self.picker_id
picker_id = conditional_escape(self.picker_id)
div_attrs = {key: conditional_escape(val)
for key, val in self.div_attrs.items()}
icon_attrs = {key: conditional_escape(val)
for key, val in self.icon_attrs.items()}
html = self.html_template % dict(div_attrs=flatatt(div_attrs),
input_attrs=flatatt(input_attrs),
icon_attrs=flatatt(icon_attrs))
js = self.js_template % dict(
picker_id=picker_id, options=json_dumps(self.options or {}))
return mark_safe(force_str(html + js))
class DateField(forms.DateField):
widget = DatePicker
input_formats = DATE_INPUT_FORMATS
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