218
428
user = Reference(user_id, User.id)
219
429
offering_id = Int(name="offeringid")
220
430
offering = Reference(offering_id, Offering.id)
224
__init__ = _kwarg_init
227
return "<%s %r in %r>" % (type(self).__name__, self.user,
437
return Store.of(self).find(ProjectGroup,
438
ProjectSet.offering_id == self.offering.id,
439
ProjectGroup.project_set_id == ProjectSet.id,
440
ProjectGroupMembership.project_group_id == ProjectGroup.id,
441
ProjectGroupMembership.user_id == self.user.id)
443
__init__ = _kwarg_init
446
return "<%s %r in %r>" % (type(self).__name__, self.user,
451
class ProjectSet(Storm):
452
"""A set of projects that share common groups.
454
Each student project group is attached to a project set. The group is
455
valid for all projects in the group's set.
458
__storm_table__ = "project_set"
460
id = Int(name="projectsetid", primary=True)
461
offering_id = Int(name="offeringid")
462
offering = Reference(offering_id, Offering.id)
463
max_students_per_group = Int()
465
projects = ReferenceSet(id, 'Project.project_set_id')
466
project_groups = ReferenceSet(id, 'ProjectGroup.project_set_id')
468
__init__ = _kwarg_init
471
return "<%s %d in %r>" % (type(self).__name__, self.id,
474
def get_permissions(self, user):
475
return self.offering.get_permissions(user)
477
def get_groups_for_user(self, user):
478
"""List all groups in this offering of which the user is a member."""
480
return Store.of(self).find(
482
ProjectGroupMembership.user_id == user.id,
483
ProjectGroupMembership.project_group_id == ProjectGroup.id,
484
ProjectGroup.project_set_id == self.id)
486
def get_submission_principal(self, user):
487
"""Get the principal on behalf of which the user can submit.
489
If this is a solo project set, the given user is returned. If
490
the user is a member of exactly one group, all the group is
491
returned. Otherwise, None is returned.
494
groups = self.get_groups_for_user(user)
495
if groups.count() == 1:
504
return self.max_students_per_group is not None
508
"""Get the entities (groups or users) assigned to submit this project.
510
This will be a Storm ResultSet.
512
#If its a solo project, return everyone in offering
514
return self.project_groups
516
return self.offering.students
518
class Project(Storm):
519
"""A student project for which submissions can be made."""
521
__storm_table__ = "project"
523
id = Int(name="projectid", primary=True)
525
short_name = Unicode()
528
project_set_id = Int(name="projectsetid")
529
project_set = Reference(project_set_id, ProjectSet.id)
530
deadline = DateTime()
532
assesseds = ReferenceSet(id, 'Assessed.project_id')
533
submissions = ReferenceSet(id,
534
'Assessed.project_id',
536
'ProjectSubmission.assessed_id')
538
__init__ = _kwarg_init
541
return "<%s '%s' in %r>" % (type(self).__name__, self.short_name,
542
self.project_set.offering)
544
def can_submit(self, principal):
545
return (self in principal.get_projects() and
546
self.deadline > datetime.datetime.now())
548
def submit(self, principal, path, revision, who):
549
"""Submit a Subversion path and revision to a project.
551
@param principal: The owner of the Subversion repository, and the
552
entity on behalf of whom the submission is being made
553
@param path: A path within that repository to submit.
554
@param revision: The revision of that path to submit.
555
@param who: The user who is actually making the submission.
558
if not self.can_submit(principal):
559
raise Exception('cannot submit')
561
a = Assessed.get(Store.of(self), principal, self)
562
ps = ProjectSubmission()
564
ps.revision = revision
565
ps.date_submitted = datetime.datetime.now()
571
def get_permissions(self, user):
572
return self.project_set.offering.get_permissions(user)
575
def latest_submissions(self):
576
"""Return the latest submission for each Assessed."""
577
return Store.of(self).find(ProjectSubmission,
578
Assessed.project_id == self.id,
579
ProjectSubmission.assessed_id == Assessed.id,
580
ProjectSubmission.date_submitted == Select(
581
Max(ProjectSubmission.date_submitted),
582
ProjectSubmission.assessed_id == Assessed.id,
583
tables=ProjectSubmission
587
def has_deadline_passed(self, user):
588
"""Check whether the deadline has passed."""
589
# XXX: Need to respect extensions.
590
return self.deadline < datetime.datetime.now()
592
def get_submissions_for_principal(self, principal):
593
"""Fetch a ResultSet of all submissions by a particular principal."""
594
assessed = Assessed.get(Store.of(self), principal, self)
597
return assessed.submissions
601
class ProjectGroup(Storm):
602
"""A group of students working together on a project."""
604
__storm_table__ = "project_group"
606
id = Int(name="groupid", primary=True)
607
name = Unicode(name="groupnm")
608
project_set_id = Int(name="projectsetid")
609
project_set = Reference(project_set_id, ProjectSet.id)
611
created_by_id = Int(name="createdby")
612
created_by = Reference(created_by_id, User.id)
615
members = ReferenceSet(id,
616
"ProjectGroupMembership.project_group_id",
617
"ProjectGroupMembership.user_id",
620
__init__ = _kwarg_init
623
return "<%s %s in %r>" % (type(self).__name__, self.name,
624
self.project_set.offering)
627
def display_name(self):
628
"""Returns the "nice name" of the user or group."""
632
def short_name(self):
633
"""Returns the database "identifier" name of the user or group."""
636
def get_projects(self, offering=None, active_only=True):
637
'''Find projects that the group can submit.
639
This will include projects in the project set which owns this group,
640
unless the project set disallows groups (in which case none will be
643
@param active_only: Whether to only search active offerings.
644
@param offering: An optional offering to restrict the search to.
646
return Store.of(self).find(Project,
647
Project.project_set_id == ProjectSet.id,
648
ProjectSet.id == self.project_set.id,
649
ProjectSet.max_students_per_group != None,
650
ProjectSet.offering_id == Offering.id,
651
(offering is None) or (Offering.id == offering.id),
652
Semester.id == Offering.semester_id,
653
(not active_only) or (Semester.state == u'current'))
656
def get_permissions(self, user):
657
if user.admin or user in self.members:
658
return set(['submit_project'])
662
class ProjectGroupMembership(Storm):
663
"""A student's membership in a project group."""
665
__storm_table__ = "group_member"
666
__storm_primary__ = "user_id", "project_group_id"
668
user_id = Int(name="loginid")
669
user = Reference(user_id, User.id)
670
project_group_id = Int(name="groupid")
671
project_group = Reference(project_group_id, ProjectGroup.id)
673
__init__ = _kwarg_init
676
return "<%s %r in %r>" % (type(self).__name__, self.user,
679
class Assessed(Storm):
680
"""A composite of a user or group combined with a project.
682
Each project submission and extension refers to an Assessed. It is the
683
sole specifier of the repository and project.
686
__storm_table__ = "assessed"
688
id = Int(name="assessedid", primary=True)
689
user_id = Int(name="loginid")
690
user = Reference(user_id, User.id)
691
project_group_id = Int(name="groupid")
692
project_group = Reference(project_group_id, ProjectGroup.id)
694
project_id = Int(name="projectid")
695
project = Reference(project_id, Project.id)
697
extensions = ReferenceSet(id, 'ProjectExtension.assessed_id')
698
submissions = ReferenceSet(
699
id, 'ProjectSubmission.assessed_id', order_by='date_submitted')
702
return "<%s %r in %r>" % (type(self).__name__,
703
self.user or self.project_group, self.project)
707
"""True if the Assessed is a group, False if it is a user."""
708
return self.project_group is not None
712
return self.project_group or self.user
715
def get(cls, store, principal, project):
716
"""Find or create an Assessed for the given user or group and project.
718
@param principal: The user or group.
719
@param project: The project.
722
if t not in (User, ProjectGroup):
723
raise AssertionError('principal must be User or ProjectGroup')
726
(t is User) or (cls.project_group_id == principal.id),
727
(t is ProjectGroup) or (cls.user_id == principal.id),
728
cls.project_id == project.id).one()
735
a.project_group = principal
742
class ProjectExtension(Storm):
743
"""An extension granted to a user or group on a particular project.
745
The user or group and project are specified by the Assessed.
748
__storm_table__ = "project_extension"
750
id = Int(name="extensionid", primary=True)
751
assessed_id = Int(name="assessedid")
752
assessed = Reference(assessed_id, Assessed.id)
753
deadline = DateTime()
754
approver_id = Int(name="approver")
755
approver = Reference(approver_id, User.id)
758
class ProjectSubmission(Storm):
759
"""A submission from a user or group repository to a particular project.
761
The content of a submission is a single path and revision inside a
762
repository. The repository is that owned by the submission's user and
763
group, while the path and revision are explicit.
765
The user or group and project are specified by the Assessed.
768
__storm_table__ = "project_submission"
770
id = Int(name="submissionid", primary=True)
771
assessed_id = Int(name="assessedid")
772
assessed = Reference(assessed_id, Assessed.id)
775
submitter_id = Int(name="submitter")
776
submitter = Reference(submitter_id, User.id)
777
date_submitted = DateTime()
780
# WORKSHEETS AND EXERCISES #
782
class Exercise(Storm):
783
"""An exercise for students to complete in a worksheet.
785
An exercise may be present in any number of worksheets.
788
__storm_table__ = "exercise"
789
id = Unicode(primary=True, name="identifier")
791
description = Unicode()
797
worksheet_exercises = ReferenceSet(id,
798
'WorksheetExercise.exercise_id')
800
worksheets = ReferenceSet(id,
801
'WorksheetExercise.exercise_id',
802
'WorksheetExercise.worksheet_id',
806
test_suites = ReferenceSet(id,
807
'TestSuite.exercise_id',
810
__init__ = _kwarg_init
813
return "<%s %s>" % (type(self).__name__, self.name)
815
def get_permissions(self, user):
822
elif u'lecturer' in set((e.role for e in user.active_enrolments)):
825
elif u'tutor' in set((e.role for e in user.active_enrolments)):
831
def get_description(self):
832
"""Return the description interpreted as reStructuredText."""
833
return rst(self.description)
836
"""Deletes the exercise, providing it has no associated worksheets."""
837
if (self.worksheet_exercises.count() > 0):
838
raise IntegrityError()
839
for suite in self.test_suites:
841
Store.of(self).remove(self)
843
class Worksheet(Storm):
844
"""A worksheet with exercises for students to complete.
846
Worksheets are owned by offerings.
849
__storm_table__ = "worksheet"
851
id = Int(primary=True, name="worksheetid")
852
offering_id = Int(name="offeringid")
853
identifier = Unicode()
860
attempts = ReferenceSet(id, "ExerciseAttempt.worksheetid")
861
offering = Reference(offering_id, 'Offering.id')
863
all_worksheet_exercises = ReferenceSet(id,
864
'WorksheetExercise.worksheet_id')
866
# Use worksheet_exercises to get access to the *active* WorksheetExercise
867
# objects binding worksheets to exercises. This is required to access the
871
def worksheet_exercises(self):
872
return self.all_worksheet_exercises.find(active=True)
874
__init__ = _kwarg_init
877
return "<%s %s>" % (type(self).__name__, self.name)
879
def remove_all_exercises(self):
880
"""Remove all exercises from this worksheet.
882
This does not delete the exercises themselves. It just removes them
885
store = Store.of(self)
886
for ws_ex in self.all_worksheet_exercises:
887
if ws_ex.saves.count() > 0 or ws_ex.attempts.count() > 0:
888
raise IntegrityError()
889
store.find(WorksheetExercise,
890
WorksheetExercise.worksheet == self).remove()
892
def get_permissions(self, user):
893
return self.offering.get_permissions(user)
896
"""Returns the xml of this worksheet, converts from rst if required."""
897
if self.format == u'rst':
898
ws_xml = rst(self.data)
904
"""Deletes the worksheet, provided it has no attempts on any exercises.
906
Returns True if delete succeeded, or False if this worksheet has
907
attempts attached."""
908
for ws_ex in self.all_worksheet_exercises:
909
if ws_ex.saves.count() > 0 or ws_ex.attempts.count() > 0:
910
raise IntegrityError()
912
self.remove_all_exercises()
913
Store.of(self).remove(self)
915
class WorksheetExercise(Storm):
916
"""A link between a worksheet and one of its exercises.
918
These may be marked optional, in which case the exercise does not count
919
for marking purposes. The sequence number is used to order the worksheet
923
__storm_table__ = "worksheet_exercise"
925
id = Int(primary=True, name="ws_ex_id")
927
worksheet_id = Int(name="worksheetid")
928
worksheet = Reference(worksheet_id, Worksheet.id)
929
exercise_id = Unicode(name="exerciseid")
930
exercise = Reference(exercise_id, Exercise.id)
935
saves = ReferenceSet(id, "ExerciseSave.ws_ex_id")
936
attempts = ReferenceSet(id, "ExerciseAttempt.ws_ex_id")
938
__init__ = _kwarg_init
941
return "<%s %s in %s>" % (type(self).__name__, self.exercise.name,
942
self.worksheet.identifier)
944
def get_permissions(self, user):
945
return self.worksheet.get_permissions(user)
948
class ExerciseSave(Storm):
949
"""A potential exercise solution submitted by a user for storage.
951
This is not an actual tested attempt at an exercise, it's just a save of
955
__storm_table__ = "exercise_save"
956
__storm_primary__ = "ws_ex_id", "user_id"
958
ws_ex_id = Int(name="ws_ex_id")
959
worksheet_exercise = Reference(ws_ex_id, "WorksheetExercise.id")
961
user_id = Int(name="loginid")
962
user = Reference(user_id, User.id)
966
__init__ = _kwarg_init
969
return "<%s %s by %s at %s>" % (type(self).__name__,
970
self.exercise.name, self.user.login, self.date.strftime("%c"))
972
class ExerciseAttempt(ExerciseSave):
973
"""An attempt at solving an exercise.
975
This is a special case of ExerciseSave, used when the user submits a
976
candidate solution. Like an ExerciseSave, it constitutes exercise solution
979
In addition, it contains information about the result of the submission:
981
- complete - True if this submission was successful, rendering this
982
exercise complete for this user in this worksheet.
983
- active - True if this submission is "active" (usually true).
984
Submissions may be de-activated by privileged users for
985
special reasons, and then they won't count (either as a
986
penalty or success), but will still be stored.
989
__storm_table__ = "exercise_attempt"
990
__storm_primary__ = "ws_ex_id", "user_id", "date"
992
# The "text" field is the same but has a different name in the DB table
994
text = Unicode(name="attempt")
998
def get_permissions(self, user):
999
return set(['view']) if user is self.user else set()
1001
class TestSuite(Storm):
1002
"""A container to group an exercise's test cases.
1004
The test suite contains some information on how to test. The function to
1005
test, variables to set and stdin data are stored here.
1008
__storm_table__ = "test_suite"
1009
__storm_primary__ = "exercise_id", "suiteid"
1012
exercise_id = Unicode(name="exerciseid")
1013
description = Unicode()
1015
function = Unicode()
1017
exercise = Reference(exercise_id, Exercise.id)
1018
test_cases = ReferenceSet(suiteid, 'TestCase.suiteid', order_by="seq_no")
1019
variables = ReferenceSet(suiteid, 'TestSuiteVar.suiteid', order_by='arg_no')
1022
"""Delete this suite, without asking questions."""
1023
for variable in self.variables:
1025
for test_case in self.test_cases:
1027
Store.of(self).remove(self)
1029
class TestCase(Storm):
1030
"""A container for actual tests (see TestCasePart), inside a test suite.
1032
It is the lowest level shown to students on their pass/fail status."""
1034
__storm_table__ = "test_case"
1035
__storm_primary__ = "testid", "suiteid"
1039
suite = Reference(suiteid, "TestSuite.suiteid")
1042
test_default = Unicode() # Currently unused - only used for file matching.
1045
parts = ReferenceSet(testid, "TestCasePart.testid")
1047
__init__ = _kwarg_init
1050
for part in self.parts:
1052
Store.of(self).remove(self)
1054
class TestSuiteVar(Storm):
1055
"""A variable used by an exercise test suite.
1057
This may represent a function argument or a normal variable.
1060
__storm_table__ = "suite_variable"
1061
__storm_primary__ = "varid"
1065
var_name = Unicode()
1066
var_value = Unicode()
1067
var_type = Unicode()
1070
suite = Reference(suiteid, "TestSuite.suiteid")
1072
__init__ = _kwarg_init
1075
Store.of(self).remove(self)
1077
class TestCasePart(Storm):
1078
"""An actual piece of code to test an exercise solution."""
1080
__storm_table__ = "test_case_part"
1081
__storm_primary__ = "partid"
1086
part_type = Unicode()
1087
test_type = Unicode()
1089
filename = Unicode()
1091
test = Reference(testid, "TestCase.testid")
1093
__init__ = _kwarg_init
1096
Store.of(self).remove(self)