add to_dom() to models

diff --git a/telemeta/models.py b/telemeta/models.py
index 661628b0a62b42cf100f0b9fe2b3590326678f6e..8593862ba99f52c2bdd83d2b5b935d9ea76dfc34 100644 (file)
--- a/telemeta/models.py
+++ b/telemeta/models.py
@@ -16,6 +16,7 @@ from django.conf import settings
 import telemeta
 from telemeta.core import *
 from telemeta import dublincore as dc
+from xml.dom import getDOMImplementation
 
 # Regular (sub) expression for matching/validating media objects IDs
 media_id_regex = r'[0-9A-Za-z._:%?-]+'
@@ -31,6 +32,21 @@ class MediaCore:
             fields_dict[field.name] = getattr(self, field.name)
         return fields_dict
 
+    def to_dom(self):
+        "Return the DOM representation of this media object"
+        impl = getDOMImplementation()
+        clsname = self.__class__.__name__
+        root = clsname[0].lower() + clsname[1:]
+        doc = impl.createDocument(None, root, None)
+        top = doc.documentElement
+        top.setAttribute("pk", self.id)
+        fields = self.to_dict()
+        for name, value in fields.iteritems():
+            element = doc.createElement(name)
+            element.appendChild(doc.createTextNode(str(value)))
+            top.appendChild(element)
+        return doc
+
 class PhysicalFormat(models.Model):
     value = models.CharField(maxlength=250)
     is_enumeration = True