UI: manage localissation of date input fields

1 files changed, 41 insertions, 4 deletions

diff --git a/bootstrap_datepicker/widgets.py b/bootstrap_datepicker/widgets.py
index 85a651efc..7baa44e66 100644
--- a/bootstrap_datepicker/widgets.py
+++ b/bootstrap_datepicker/widgets.py
@@ -1,6 +1,11 @@
 # -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+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
@@ -8,6 +13,16 @@ from django.utils import translation
 from django.utils.html import conditional_escape
 from django.utils.encoding import force_text
 
+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:
@@ -17,7 +32,7 @@ class DatePicker(DateTimeInput):
                 lang = translation.get_language()
                 if lang:
                     lang = lang.lower()
-                    # There is language name that length>2 or contains uppercase.
+                    # language name with length > 2 or containing uppercase
                     lang_map = {
                         'en-au': 'en-AU',
                         'en-gb': 'en-GB',
@@ -34,7 +49,8 @@ class DatePicker(DateTimeInput):
                     if len(lang) > 2:
                         lang = lang_map.get(lang, 'en-us')
                     if lang not in ('en', 'en-us'):
-                        yield 'js/locales/bootstrap-datepicker.%s.min.js' % (lang)
+                        yield 'js/locales/bootstrap-datepicker.%s.min.js' % (
+                            lang)
 
         js = JSFiles()
         css = {'all': ('css/bootstrap-datepicker3.standalone.min.css',), }
@@ -105,6 +121,21 @@ class DatePicker(DateTimeInput):
                 'date-format'):
             self.options['format'] = self.conv_datetime_format_py2js(format)
 
+    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):
         if value is None:
             value = ''
@@ -114,11 +145,12 @@ class DatePicker(DateTimeInput):
         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_text(self._format_value(value))
+            input_attrs['value'] = force_text(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'
+            self.picker_id = (
+                input_attrs.get('id', '') + '_pickers'
             ).replace(' ', '_')
         self.div_attrs['id'] = self.picker_id
         picker_id = conditional_escape(self.picker_id)
@@ -132,3 +164,8 @@ class DatePicker(DateTimeInput):
         js = self.js_template % dict(picker_id=picker_id,
                                      options=json_dumps(self.options or {}))
         return mark_safe(force_text(html + js))
+
+
+class DateField(forms.DateField):
+    widget = DatePicker
+    input_formats = DATE_INPUT_FORMATS