add support for input groups from the widgets

Author: NotSqrt

bootstrap3/renderers.py

@@ -209,8 +209,8 @@ def __init__(self, field, *args, **kwargs):
         else:
             self.placeholder = ''
 
-        self.addon_before = kwargs.get('addon_before', '')
-        self.addon_after = kwargs.get('addon_after', '')
+        self.addon_before = kwargs.get('addon_before', self.initial_attrs.pop('addon_before', ''))
+        self.addon_after = kwargs.get('addon_after', self.initial_attrs.pop('addon_after', ''))
 
         # These are set in Django or in the global BOOTSTRAP3 settings, and
         # they can be overwritten in the template

bootstrap3/tests.py

@@ -3,11 +3,7 @@
 
 import re
 
-try:
-    from unittest import TestCase
-    TestCase.AssertIn
-except AttributeError:
-    from django.utils.unittest.case import TestCase
+from django.test import TestCase
 
 from django import forms
 from django.template import Template, Context
@@ -77,6 +73,9 @@ class TestForm(forms.Form):
         widget=forms.CheckboxSelectMultiple,
         help_text='Check as many as you like.',
     )
+    addon = forms.CharField(
+        widget=forms.TextInput(attrs={'addon_before': 'before', 'addon_after': 'after'}),
+    )
 
     required_css_class = 'bootstrap3-req'
 
@@ -215,6 +214,12 @@ def test_field_names(self):
         for field in form:
             self.assertIn('name="%s"' % field.name, res)
 
+    def test_field_addons(self):
+        form = TestForm()
+        res = render_form(form)
+        self.assertIn('<div class="input-group"><span class="input-group-addon">before</span><input', res)
+        self.assertIn('/><span class="input-group-addon">after</span></div>', res)
+
     def test_exclude(self):
         form = TestForm()
         res = render_template(