initial opensocial people service

1 files changed, 90 insertions, 0 deletions

diff --git a/coip/apps/opensocial/serializer.py b/coip/apps/opensocial/serializer.py
new file mode 100644
index 0000000..14ac2df
--- /dev/null
+++ b/coip/apps/opensocial/serializer.py
@@ -0,0 +1,90 @@
+'''
+Created on Jun 19, 2011
+
+@author: leifj
+'''
+from tastypie.serializers import Serializer, get_type_string
+from lxml.etree import Element
+from tastypie.bundle import Bundle
+from tastypie.fields import ApiField, ToOneField, ToManyField
+from django.utils.encoding import force_unicode
+import logging
+from pprint import pformat
+
+class OpenSocialSerializer(Serializer):
+    
+    def __init__(self, formats=None, content_types=None, datetime_formatting=None):
+        super(OpenSocialSerializer,self).__init__(formats,content_types,datetime_formatting)
+    
+    def to_etree(self, data, options=None, name=None, depth=0):
+        
+        #logging.debug("--------")
+        #logging.debug(name)
+        #logging.debug(depth)
+        #logging.debug(pformat(data))
+        """
+        Given some data, converts that data to an ``etree.Element`` suitable
+        for use in the XML output.
+        """
+
+        if isinstance(data, (list, tuple)):
+            element = Element(name or 'objects')
+            if name:
+                element = Element(name)
+                #element.set('type', 'list')
+            else:
+                element = Element('objects')
+            for item in data:
+                element.append(self.to_etree(item, options, depth=depth+1))
+        elif isinstance(data, dict):
+            if depth == 0:
+                element = Element(name or 'response',attrib={'xmlns': "http://ns.opensocial.org/2008/opensocial"} )
+            else:
+                element = Element(name or 'object')
+                element.set('type', 'hash')
+            
+            if data.has_key('objects'):
+                if len(data['objects']) == 1:
+                    return self.to_etree(data['objects'][0], options, name=None, depth=depth)
+                else:
+                    for v in data['objects']:
+                        element.append(self.to_etree(v, options, name='entry', depth=depth+1))
+            else:
+                for (key, value) in data.iteritems():
+                    keyname = key
+                    if keyname == 'user':
+                        keyname = 'person'
+                    element.append(self.to_etree(value, options, name=keyname, depth=depth+1))
+        elif isinstance(data, Bundle):
+            element = Element(name or 'object')
+            for field_name, field_object in data.data.items():
+                keyname = field_name
+                if keyname == 'user':
+                    keyname = 'person'
+                element.append(self.to_etree(field_object, options, name=keyname, depth=depth+1))
+        elif isinstance(data, ApiField):
+            if isinstance(data, ToOneField):
+                if data.full:
+                    return self.to_etree(data.fk_resource, options, name, depth+1)
+                else:
+                    return self.to_etree(data.value, options, name, depth+1)
+            elif isinstance(data, ToManyField):
+                if data.full:
+                    element = Element(name or 'objects')
+                    for bundle in data.m2m_bundles:
+                        element.append(self.to_etree(bundle, options, bundle.resource_name, depth+1))
+                else:
+                    element = Element(name or 'objects')
+                    for value in data.value:
+                        element.append(self.to_etree(value, options, name, depth=depth+1))
+            else:
+                return self.to_etree(data.value, options, name)
+        else:
+            element = Element(name or 'value')
+            simple_data = self.to_simple(data, options)
+            data_type = get_type_string(simple_data)
+            if data_type != 'string':
+                element.set('type', get_type_string(simple_data))
+            if data_type != 'null':
+                element.text = force_unicode(simple_data)
+        return element
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