Made EnumFieldRenderer a proper class.

tailbone/forms/renderers/common.py

@@ -76,27 +76,33 @@ class AutocompleteFieldRenderer(FieldRenderer):
         return unicode(value)
 
 
-def EnumFieldRenderer(enum):
+class EnumFieldRenderer(SelectFieldRenderer):
     """
-    Adds support for enumeration fields.
+    Renderer for simple enumeration fields.
     """
 
-    class Renderer(SelectFieldRenderer):
+    enumeration = {}
+
+    def __init__(self, arg):
+        if isinstance(arg, dict):
+            self.enumeration = arg
+        else:
+            self(arg)
+
+    def __call__(self, field):
+        super(EnumFieldRenderer, self).__init__(field)
+        return self
 
     def render_readonly(self, **kwargs):
         value = self.raw_value
         if value is None:
-                return ''
-            if value in enum:
-                return enum[value]
-            return str(value)
+            return u''
+        return self.enumeration.get(value, unicode(value))
 
     def render(self, **kwargs):
-            opts = [(enum[x], x) for x in sorted(enum)]
+        opts = [(self.enumeration[x], x) for x in sorted(self.enumeration)]
         return SelectFieldRenderer.render(self, opts, **kwargs)
 
-    return Renderer
-
 
 class YesNoFieldRenderer(CheckBoxFieldRenderer):