Add some generic render methods to MasterView

tailbone/views/master.py

@@ -905,6 +905,19 @@ class MasterView(View):
         """
         return obj.id_str
 
+    def render_as_is(self, obj, field):
+        return getattr(obj, field)
+
+    def render_url(self, obj, field):
+        url = getattr(obj, field)
+        if url:
+            return tags.link_to(url, url, target='_blank')
+
+    def render_html(self, obj, field):
+        html = getattr(obj, field)
+        if html:
+            return HTML.literal(html)
+
     def render_default_phone(self, obj, field):
         """
         Render the "default" (first) phone number for the given contact.