Fixed #20986 -- Enabled SelectDateWidget to use custom months

Reviewed by Trac alias MarkusH.

django/forms/extras/widgets.py

@@ -51,16 +51,23 @@ class SelectDateWidget(Widget):
     day_field = '%s_day'
     year_field = '%s_year'
 
-    def __init__(self, attrs=None, years=None, required=True):
+    def __init__(self, attrs=None, years=None, required=True, months=None):
-        # years is an optional list/tuple of years to use in the "year" select box.
         self.attrs = attrs or {}
         self.required = required
+
+        # Optional list or tuple of years to use in the "year" select box.
         if years:
             self.years = years
         else:
             this_year = datetime.date.today().year
             self.years = range(this_year, this_year+10)
 
+        # Optional dict of months to use in the "month" select box.
+        if months:
+            self.months = months
+        else:
+            self.months = MONTHS
+
     def render(self, name, value, attrs=None):
         try:
             year_val, month_val, day_val = value.year, value.month, value.day
@@ -80,7 +87,7 @@ class SelectDateWidget(Widget):
                         year_val, month_val, day_val = [int(v) for v in match.groups()]
         choices = [(i, i) for i in self.years]
         year_html = self.create_select(name, self.year_field, value, year_val, choices)
-        choices = list(six.iteritems(MONTHS))
+        choices = list(six.iteritems(self.months))
         month_html = self.create_select(name, self.month_field, value, month_val, choices)
         choices = [(i, i) for i in range(1, 32)]
         day_html = self.create_select(name, self.day_field, value, day_val,  choices)

docs/ref/forms/widgets.txt

@@ -763,3 +763,20 @@ Composite widgets
 
         An optional list/tuple of years to use in the "year" select box.
         The default is a list containing the current year and the next 9 years.
+
+    .. attribute:: SelectDateWidget.months
+
+        .. versionadded:: 1.7
+
+        An optional dict of months to use in the "months" select box.
+
+        The keys of the dict correspond to the month number (1-indexed) and
+        the values are the displayed months.
+
+        .. code-block:: python
+
+            MONTHS = {
+                1:_('jan'), 2:_('feb'), 3:_('mar'), 4:_('apr'),
+                5:_('may'), 6:_('jun'), 7:_('jul'), 8:_('aug'),
+                9:_('sep'), 10:_('oct'), 11:_('nov'), 12:_('dec')
+            }

docs/releases/1.7.txt

@@ -213,6 +213,10 @@ Forms
   return ``self.cleaned_data``. If it does return a changed dictionary then
   that will still be used.
 
+* :attr:`SelectDateWidget.months
+  <django.forms.extras.widgets.SelectDateWidget.months>` can be used to
+  customize the wording of the months displayed in the select widget.
+
 Management Commands
 ^^^^^^^^^^^^^^^^^^^
 

tests/forms_tests/tests/test_extra.py

@@ -10,6 +10,7 @@ from django.test import TestCase
 from django.test.utils import override_settings
 from django.utils import six
 from django.utils import translation
+from django.utils.dates import MONTHS_AP
 from django.utils.encoding import force_text, smart_text, python_2_unicode_compatible
 
 from .test_error_messages import AssertFormErrorsMixin
@@ -32,6 +33,8 @@ class FormsExtraTestCase(TestCase, AssertFormErrorsMixin):
     # The forms library comes with some extra, higher-level Field and Widget
     def test_selectdate(self):
         w = SelectDateWidget(years=('2007','2008','2009','2010','2011','2012','2013','2014','2015','2016'))
+
+        # Rendering the default state.
         self.assertHTMLEqual(w.render('mydate', ''), """<select name="mydate_month" id="id_mydate_month">
 <option value="0">---</option>
 <option value="1">January</option>
@@ -96,8 +99,11 @@ class FormsExtraTestCase(TestCase, AssertFormErrorsMixin):
 <option value="2015">2015</option>
 <option value="2016">2016</option>
 </select>""")
+
+        # Rendering the None or '' values should yield the same output.
         self.assertHTMLEqual(w.render('mydate', None), w.render('mydate', ''))
 
+        # Rendering a string value.
         self.assertHTMLEqual(w.render('mydate', '2010-04-15'), """<select name="mydate_month" id="id_mydate_month">
 <option value="1">January</option>
 <option value="2">February</option>
@@ -158,10 +164,10 @@ class FormsExtraTestCase(TestCase, AssertFormErrorsMixin):
 <option value="2016">2016</option>
 </select>""")
 
-        # Accepts a datetime or a string:
+        # Rendering a datetime value.
         self.assertHTMLEqual(w.render('mydate', datetime.date(2010, 4, 15)), w.render('mydate', '2010-04-15'))
 
-        # Invalid dates still render the failed date:
+        # Invalid dates should still render the failed date.
         self.assertHTMLEqual(w.render('mydate', '2010-02-31'), """<select name="mydate_month" id="id_mydate_month">
 <option value="1">January</option>
 <option value="2" selected="selected">February</option>
@@ -222,7 +228,65 @@ class FormsExtraTestCase(TestCase, AssertFormErrorsMixin):
 <option value="2016">2016</option>
 </select>""")
 
-        # Using a SelectDateWidget in a form:
+        # Rendering with a custom months dict.
+        w = SelectDateWidget(months=MONTHS_AP, years=('2013',))
+        self.assertHTMLEqual(w.render('mydate', ''), """<select name="mydate_month" id="id_mydate_month">
+<option value="0">---</option>
+<option value="1">Jan.</option>
+<option value="2">Feb.</option>
+<option value="3">March</option>
+<option value="4">April</option>
+<option value="5">May</option>
+<option value="6">June</option>
+<option value="7">July</option>
+<option value="8">Aug.</option>
+<option value="9">Sept.</option>
+<option value="10">Oct.</option>
+<option value="11">Nov.</option>
+<option value="12">Dec.</option>
+</select>
+
+<select name="mydate_day" id="id_mydate_day">
+<option value="0">---</option>
+<option value="1">1</option>
+<option value="2">2</option>
+<option value="3">3</option>
+<option value="4">4</option>
+<option value="5">5</option>
+<option value="6">6</option>
+<option value="7">7</option>
+<option value="8">8</option>
+<option value="9">9</option>
+<option value="10">10</option>
+<option value="11">11</option>
+<option value="12">12</option>
+<option value="13">13</option>
+<option value="14">14</option>
+<option value="15">15</option>
+<option value="16">16</option>
+<option value="17">17</option>
+<option value="18">18</option>
+<option value="19">19</option>
+<option value="20">20</option>
+<option value="21">21</option>
+<option value="22">22</option>
+<option value="23">23</option>
+<option value="24">24</option>
+<option value="25">25</option>
+<option value="26">26</option>
+<option value="27">27</option>
+<option value="28">28</option>
+<option value="29">29</option>
+<option value="30">30</option>
+<option value="31">31</option>
+</select>
+
+<select name="mydate_year" id="id_mydate_year">
+<option value="0">---</option>
+<option value="2013">2013</option>
+</select>""")
+
+        # Using a SelectDateWidget in a form.
         w = SelectDateWidget(years=('2007','2008','2009','2010','2011','2012','2013','2014','2015','2016'), required=False)
         self.assertHTMLEqual(w.render('mydate', ''), """<select name="mydate_month" id="id_mydate_month">
 <option value="0">---</option>