[gen] Added field.getCatalogValue allowing, for indexed values, to get the value as indexed in the Zope catalog. [gen] field Computed: added param formatMethod allowing to define the way to format the computed value (ie: the formatted value can then be different from the 'raw' value: this can be interesting if the raw value must be indexed.

fields/__init__.py

@@ -22,6 +22,7 @@ from appy.gen import utils as gutils
 from appy.px import Px
 from appy.shared import utils as sutils
 from group import Group
+from search import Search
 from page import Page
 
 # ------------------------------------------------------------------------------
@@ -588,6 +589,18 @@ class Field:
                 res = str(res)
         return res
 
+    def getCatalogValue(self, obj, usage='search'):
+        '''This method returns the index value that is currently stored in the
+           catalog for this field on p_obj.'''
+        if not self.indexed:
+            raise Exception('Field %s: cannot retrieve catalog version of ' \
+                            'unindexed field.' % self.name)
+        tool = obj.getTool()
+        indexName = Search.getIndexName(self.name, usage=usage)
+        catalogBrain = tool.getObject(obj.id, brain=True)
+        index = tool.getApp().catalog.Indexes[indexName]
+        return index.getEntryForObject(catalogBrain.getRID())
+
     def valueIsInRequest(self, obj, request, name):
         '''Is there a value corresponding to this field in the request? p_name
            can be different from self.name (ie, if it is a field within another