Update directsvc.JSONEncoder to add a constructor.

modules/plugin_dbui/directsvc.py

@@ -26,6 +26,38 @@ class JSONEncoder(json.JSONEncoder):
         - time
 
     """
+    def __init__(self,
+                 skipkeys=False,
+                 ensure_ascii=True,
+                 check_circular=True,
+                 allow_nan=True,
+                 sort_keys=False,
+                 indent=None,
+                 separators=None,
+                 encoding='utf-8',
+                 default=None,
+                 use_decimal=False):
+        """
+        Note:
+            * Copy from the base class gluon.contrib.simplejson
+            * the controller plugin_dbui.dbui_conf is crashing if the
+              constructor is not defined (not understood)
+        """
+        self.skipkeys = skipkeys
+        self.ensure_ascii = ensure_ascii
+        self.check_circular = check_circular
+        self.allow_nan = allow_nan
+        self.sort_keys = sort_keys
+        self.use_decimal = use_decimal
+        if isinstance(indent, (int, long)):
+            indent = ' ' * indent
+        self.indent = indent
+        if separators is not None:
+            self.item_separator, self.key_separator = separators
+        if default is not None:
+            self.default = default
+        self.encoding = encoding
+
     def default(self, obj):
 
         if isinstance(obj, (datetime.date,