From 6d8f8ca23b4d37e2ae06063cfa446951bd65c3d5 Mon Sep 17 00:00:00 2001
From: Daniel Rozenberg <daniboy@gmail.com>
Date: Tue, 30 Jun 2015 18:20:36 -0700
Subject: [PATCH 1/2] Support non-value attributes in HTML5 by setting their
 value to True, not ''

---
 widget_tweaks/templatetags/widget_tweaks.py |  2 +-
 widget_tweaks/tests.py                      | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/widget_tweaks/templatetags/widget_tweaks.py b/widget_tweaks/templatetags/widget_tweaks.py
index 2ae0bbd..84f7677 100644
--- a/widget_tweaks/templatetags/widget_tweaks.py
+++ b/widget_tweaks/templatetags/widget_tweaks.py
@@ -17,7 +17,7 @@ def _process_field_attributes(field, attr, process):
     # split attribute name and value from 'attr:value' string
     params = attr.split(':', 1)
     attribute = params[0]
-    value = params[1] if len(params) == 2 else ''
+    value = params[1] if len(params) == 2 else True
 
     # decorate field.as_widget method with updated attributes
     old_as_widget = field.as_widget
diff --git a/widget_tweaks/tests.py b/widget_tweaks/tests.py
index 454064a..402e90b 100644
--- a/widget_tweaks/tests.py
+++ b/widget_tweaks/tests.py
@@ -330,3 +330,18 @@ class RenderFieldFilter_field_type_widget_type_Test(TestCase):
     def test_field_type_widget_type_rendering_simple(self):
         res = render_form('<div class="{{ form.simple|field_type }} {{ form.simple|widget_type }} {{ form.simple.html_name }}">{{ form.simple }}</div>')
         assertIn('class="charfield textinput simple"', res)
+
+
+class RenderFieldTagNonValueAttribute(TestCase):
+    def test_field_non_value(self):
+        res = render_form("{{ form.simple|attr:'required' }}", form=MyForm({}))
+        assertIn('required', res)
+        assertNotIn('required=', res)
+
+    def test_field_empty_value(self):
+        res = render_form("{{ form.simple|attr:'required:' }}", form=MyForm({}))
+        assertIn('required=""', res)
+
+    def test_field_other_value(self):
+        res = render_form("{{ form.simple|attr:'required:spam' }}", form=MyForm({}))
+        assertIn('required="spam"', res)

From 08d4ce93ec4e3db5008fa5c6f2537fe5188e5a31 Mon Sep 17 00:00:00 2001
From: Daniel Rozenberg <daniboy@gmail.com>
Date: Wed, 2 Sep 2015 17:07:48 -0700
Subject: [PATCH 2/2] Fixed support for non-value attributes in Django < 1.8

---
 widget_tweaks/templatetags/widget_tweaks.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/widget_tweaks/templatetags/widget_tweaks.py b/widget_tweaks/templatetags/widget_tweaks.py
index 84f7677..096250a 100644
--- a/widget_tweaks/templatetags/widget_tweaks.py
+++ b/widget_tweaks/templatetags/widget_tweaks.py
@@ -1,9 +1,15 @@
 import re
 import types
+import django
 from django.template import Library, Node, Variable, TemplateSyntaxError
+from django.utils.safestring import mark_safe
+
 register = Library()
 
 
+BACKWARDS_COMPATIBILITY = django.VERSION[:2] < (1, 8)
+
+
 def silence_without_field(fn):
     def wrapped(field, attr):
         if not field:
@@ -18,6 +24,8 @@ def _process_field_attributes(field, attr, process):
     params = attr.split(':', 1)
     attribute = params[0]
     value = params[1] if len(params) == 2 else True
+    if BACKWARDS_COMPATIBILITY and value is True:
+        value = '__BACKWARDS_COMPATIBILITY__'
 
     # decorate field.as_widget method with updated attributes
     old_as_widget = field.as_widget
@@ -26,6 +34,8 @@ def as_widget(self, widget=None, attrs=None, only_initial=False):
         attrs = attrs or {}
         process(widget or self.field.widget, attrs, attribute, value)
         html = old_as_widget(widget, attrs, only_initial)
+        if BACKWARDS_COMPATIBILITY:
+            html = mark_safe(html.replace('="__BACKWARDS_COMPATIBILITY__"', ''))
         self.as_widget = old_as_widget
         return html