Add array support to restxml

wsme/protocols/restxml.py

@@ -46,6 +46,17 @@ def fromxml(datatype, element):
     return datatype(element.text)
 
 
+@toxml.when_type(list)
+def array_toxml(datatype, key, value):
+    el = et.Element(key)
+    if value is None:
+        el.set('nil', 'true')
+    else:
+        for item in value:
+            el.append(toxml(datatype[0], 'item', item))
+    return el
+
+
 @toxml.when_object(bool)
 def bool_toxml(datatype, key, value):
     el = et.Element(key)
@@ -86,6 +97,13 @@ def binary_toxml(datatype, key, value):
     return el
 
 
+@fromxml.when_type(list)
+def array_fromxml(datatype, element):
+    if element.get('nil') == 'true':
+        return None
+    return [fromxml(datatype[0], item) for item in element.findall('item')]
+
+
 @fromxml.when_object(datetime.date)
 def date_fromxml(datatype, element):
     return datetime.datetime.strptime(element.text, '%Y-%m-%d').date()

wsme/tests/test_restxml.py

@@ -17,7 +17,10 @@ def dumpxml(key, obj, datatype=None):
     el = et.Element(key)
     if isinstance(obj, tuple):
         obj, datatype = obj
-    if datatype == wsme.types.binary:
+    if isinstance(datatype, list):
+        for item in obj:
+            el.append(dumpxml('item', item, datatype[0]))
+    elif datatype == wsme.types.binary:
         el.text = base64.encodestring(obj)
     elif isinstance(obj, basestring):
         el.text = obj
@@ -39,7 +42,11 @@ def dumpxml(key, obj, datatype=None):
 
 def loadxml(el, datatype):
     print el, datatype, len(el)
-    if len(el):
+    if el.get('nil') == 'true':
+        return None
+    if isinstance(datatype, list):
+        return [loadxml(item, datatype[0]) for item in el.findall('item')]
+    elif len(el):
         d = {}
         for name, attr in datatype._wsme_attributes:
             child = el.find(name)