Changeset 9414 for main/waeup.kofa/trunk/src/waeup/kofa/hostels/interfaces.py

Timestamp:

25 Oct 2012, 09:44:02 (12 years ago)

Author:

Henrik Bettermann

Message:

Reorganize allocation of students to beds. We can't use the StudentSource? in live systems. The select box would be filled with ten thousands of students.

File:

• main/waeup.kofa/trunk/src/waeup/kofa/hostels/interfaces.py (modified) (3 diffs)

main/waeup.kofa/trunk/src/waeup/kofa/hostels/interfaces.py

@@ -16 +16 @@
 ## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##
+from  grok import getSite
 from datetime import datetime
+from zope.component import getUtility
+from zope.catalog.interfaces import ICatalog
 from zope.interface import invariant, Invalid, Attribute
 from zope import schema
@@ -23 +26 @@
 from waeup.kofa.interfaces import MessageFactory as _
 from waeup.kofa.hostels.vocabularies import (
-    bed_letters, blocks, SpecialHandlingSource, StudentSource)
+    bed_letters, blocks, SpecialHandlingSource,
+    NOT_OCCUPIED)
 
 class IHostelsContainer(IKofaObject):
@@ -236 +240 @@
         )
 
-
-
-class IBedAllocateStudent(IBed):
-    """A representation of beds for allocation form only.
-
-    """
-
-    owner = schema.Choice(
-        title = _(u'Owner (Student)'),
-        source = StudentSource(),
-        default = None,
-        required = True,
-        )
+    @invariant
+    def allowed_owners(bed):
+        if bed.owner == NOT_OCCUPIED:
+            return
+        catalog = getUtility(ICatalog, name='students_catalog')
+        accommodation_session = getSite()['hostels'].accommodation_session
+        students = catalog.searchResults(current_session=(
+            accommodation_session,accommodation_session))
+        student_ids = [student.student_id for student in students]
+        if not bed.owner in student_ids:
+            raise Invalid(_(
+                "Either student does not exist or is not in accommodation session."))
+        catalog = getUtility(ICatalog, name='beds_catalog')
+        beds = catalog.searchResults(owner=(bed.owner,bed.owner))
+        if len(beds):
+            allocated_bed = [bed.bed_id for bed in beds][0]
+            raise Invalid(_(
+                "This student resides in bed ${a}.", mapping = {'a':allocated_bed}))