[ui] Fix case of inlined-edition-form

Crash with KeyError before this patch

views/dataobject.py

@@ -92,13 +92,16 @@ for etype in ('SEDABinaryDataObject', 'SEDAPhysicalDataObject'):
 
 def uri_cardinality_vocabulary(form, field):
     req = form._cw
-    try:
-        # inlined creation form
-        parent_type = json.loads(req.form['arg'][1])
-    except KeyError:
-        # edition through reledit
-        parent_eid = req.form['eid']
-        parent_type = req.describe(int(parent_eid))[0]
+    if form.edited_entity.has_eid():
+        parent_type = form.edited_entity.cw_adapt_to('IContained').parent.cw_etype
+    else:
+        try:
+            # inlined creation form
+            parent_type = json.loads(req.form['arg'][1])
+        except KeyError:
+            # edition through reledit
+            parent_eid = req.form['eid']
+            parent_type = req.describe(int(parent_eid))[0]
     if parent_type in ('SEDABinaryDataObject', 'SEDAAltBinaryDataObjectAttachment'):
         return [u'1']
     return [u'0..1', u'1']