diff -r 031e5828f3a4 -r 0e544df4d925 app/soc/logic/models/survey_record.py
--- a/app/soc/logic/models/survey_record.py	Thu Jul 02 12:40:42 2009 +0200
+++ b/app/soc/logic/models/survey_record.py	Thu Jul 02 12:43:06 2009 +0200
@@ -22,15 +22,13 @@
   ]
 
 
-from google.appengine.ext import db
-
-from soc.logic.models import work
+from soc.logic.models import expando_base
 from soc.models.survey_record import SurveyRecord
 from soc.models.grading_project_survey_record import GradingProjectSurveyRecord
 from soc.models.project_survey_record import ProjectSurveyRecord
 
 
-class Logic(work.Logic):
+class Logic(expando_base.Logic):
   """Logic methods for listing results for Surveys.
   """
 
@@ -40,46 +38,27 @@
     """
 
     super(Logic, self).__init__(model=model, base_model=base_model,
-                                scope_logic=scope_logic)
+                                scope_logic=scope_logic, id_based=True)
 
-  def updateSurveyRecord(self, user, survey, survey_record, fields):
-    """ Create a new survey record, or get an existing one.
+  def updateOrCreateFromFields(self, entity, properties, clear_dynamic=False):
+    """ Create a new SurveyRecord, or update an existing one.
 
     params:
-      user = user taking survey
-      survey = survey entity
-      survey_record = existing record, if one exists
-      fields = submitted responses to survey fields
+      entity = existing SurveyRecord, if one exists
+      properties = the properties to be set
+      clear_dynamic = iff True removes all dynamic properties before updating
     """
 
-    if survey_record:
-      create = False
-      for prop in survey_record.dynamic_properties():
-        delattr(survey_record, prop)
+    if entity:
+      if clear_dynamic:
+        # remove all dynamic properties before we update
+        for prop in entity.dynamic_properties():
+          delattr(entity, prop)
+      self.updateEntityProperties(entity, properties)
     else:
-      create = True
-      Record = self.getModel()
-      survey_record = Record(user=user, survey=survey)
-
-    schema = eval(survey.survey_content.schema)
+      entity = super(Logic, self).updateOrCreateFromFields(properties)
 
-    for name, value in fields.items():
-      # TODO(ajaksu) logic below can be improved now we have different models
-      if name == 'project':
-        project = student_project.StudentProject.get(value)
-        survey_record.project = project
-      elif name == 'grade':
-        survey_record.grade = GRADES[value]
-      else:
-        pick_multi = name in schema and schema[name]['type'] == 'pick_multi'
-        if pick_multi and hasattr(fields, 'getlist'): # it's a multidict
-          setattr(survey_record, name, ','.join(fields.getlist(name)))
-        else:
-          setattr(survey_record, name, value)
-
-    # if creating evaluation record, set SurveyRecordGroup
-    db.put(survey_record)
-    return survey_record
+    return entity
 
 
 class ProjectLogic(Logic):
@@ -91,7 +70,7 @@
     """Defines the name, key_name and model for this entity.
     """
 
-    super(Logic, self).__init__(model=model, base_model=base_model,
+    super(ProjectLogic, self).__init__(model=model, base_model=base_model,
                                 scope_logic=scope_logic)
 
 
@@ -104,7 +83,7 @@
     """Defines the name, key_name and model for this entity.
     """
 
-    super(Logic, self).__init__(model=model, base_model=base_model,
+    super(GradingProjectLogic, self).__init__(model=model, base_model=base_model,
                                 scope_logic=scope_logic)