zen4ever · June 19, 2012 08:56 · Jun 19, 2012
diff --git a/widgets.py b/widgets.py
@@ -0,0 +1,53 @@
+class SpanWidget(forms.Widget):
+    """
+    Renders a value wrapped in a <span> tag.
+    Based on Killarny, http://www.djangosnippets.org/snippets/1340/
+    Modified to place the value in a hidden control, so that it
+    returns a value in the GET/POST response.
+    """
+    def __init__(self, attrs=None, choices=(), url=False):
+        super(SpanWidget, self).__init__(attrs=attrs)
+        self.url = url
+        self.choices = list(choices)
+
+    def get_hidden(self, name, value):
+        return "<input type='hidden' name='%s' value='%s' />" \
+                 % (name, escape(value).replace('\n','&#10;').replace('\r','&#13;'))
+
+    def get_render_value(self, value):
+        render_value = value
+        if self.choices:
+            render_value = dict(self.choices).get(value, '')
+        return render_value
+
+    def render(self, name, value, attrs=None):
+        final_attrs = self.build_attrs(attrs, name=name)
+        render_value = self.get_render_value(value)
+        if hasattr(value, 'url'):
+            return mark_safe(u"<span%s><a href='%s'>%s</a></span>" % (
+                    forms.util.flatatt(final_attrs),
+                    escape(striptags(unicode(value.url))),
+                    escape(striptags(unicode(value.name.rsplit('/', 1)[1]))),
+            ))
+        hidden = self.get_hidden(name, value)
+        return mark_safe(u"<span%s>%s%s</span>" % (
+                forms.util.flatatt(final_attrs),
+                escape(striptags(unicode(render_value))),
+                hidden))
+
+
+class URLSpanWidget(SpanWidget):
+    def render(self, name, value, attrs=None):
+        final_attrs = self.build_attrs(attrs, name=name)
+        render_value = self.get_render_value(value)
+        hidden = self.get_hidden(name, value)
+
+        render_value = value[:55]
+        if render_value != value:
+            render_value += "..."
+        return mark_safe(u"<span%s><a href='%s'>%s%s</a></span>" % (
+                forms.util.flatatt(final_attrs),
+                escape(striptags(unicode(value))),
+                escape(striptags(unicode(render_value))),
+                hidden,
+        ))