210
454
user = Reference(user_id, User.id)
211
455
offering_id = Int(name="offeringid")
212
456
offering = Reference(offering_id, Offering.id)
216
__init__ = _kwarg_init
219
return "<%s %r in %r>" % (type(self).__name__, self.user,
463
return Store.of(self).find(ProjectGroup,
464
ProjectSet.offering_id == self.offering.id,
465
ProjectGroup.project_set_id == ProjectSet.id,
466
ProjectGroupMembership.project_group_id == ProjectGroup.id,
467
ProjectGroupMembership.user_id == self.user.id)
469
__init__ = _kwarg_init
472
return "<%s %r in %r>" % (type(self).__name__, self.user,
475
def get_permissions(self, user, config):
476
# A user can edit any enrolment that they could have created.
478
if ('enrol_' + str(self.role)) in self.offering.get_permissions(
484
"""Delete this enrolment."""
485
Store.of(self).remove(self)
490
class ProjectSet(Storm):
491
"""A set of projects that share common groups.
493
Each student project group is attached to a project set. The group is
494
valid for all projects in the group's set.
497
__storm_table__ = "project_set"
499
id = Int(name="projectsetid", primary=True)
500
offering_id = Int(name="offeringid")
501
offering = Reference(offering_id, Offering.id)
502
max_students_per_group = Int()
504
projects = ReferenceSet(id, 'Project.project_set_id')
505
project_groups = ReferenceSet(id, 'ProjectGroup.project_set_id')
507
__init__ = _kwarg_init
510
return "<%s %d in %r>" % (type(self).__name__, self.id,
513
def get_permissions(self, user, config):
514
return self.offering.get_permissions(user, config)
516
def get_groups_for_user(self, user):
517
"""List all groups in this offering of which the user is a member."""
519
return Store.of(self).find(
521
ProjectGroupMembership.user_id == user.id,
522
ProjectGroupMembership.project_group_id == ProjectGroup.id,
523
ProjectGroup.project_set_id == self.id)
525
def get_submission_principal(self, user):
526
"""Get the principal on behalf of which the user can submit.
528
If this is a solo project set, the given user is returned. If
529
the user is a member of exactly one group, all the group is
530
returned. Otherwise, None is returned.
533
groups = self.get_groups_for_user(user)
534
if groups.count() == 1:
543
return self.max_students_per_group is not None
547
"""Get the entities (groups or users) assigned to submit this project.
549
This will be a Storm ResultSet.
551
#If its a solo project, return everyone in offering
553
return self.project_groups
555
return self.offering.students
557
class DeadlinePassed(Exception):
558
"""An exception indicating that a project cannot be submitted because the
559
deadline has passed."""
563
return "The project deadline has passed"
565
class Project(Storm):
566
"""A student project for which submissions can be made."""
568
__storm_table__ = "project"
570
id = Int(name="projectid", primary=True)
572
short_name = Unicode()
575
project_set_id = Int(name="projectsetid")
576
project_set = Reference(project_set_id, ProjectSet.id)
577
deadline = DateTime()
579
assesseds = ReferenceSet(id, 'Assessed.project_id')
580
submissions = ReferenceSet(id,
581
'Assessed.project_id',
583
'ProjectSubmission.assessed_id')
585
__init__ = _kwarg_init
588
return "<%s '%s' in %r>" % (type(self).__name__, self.short_name,
589
self.project_set.offering)
591
def can_submit(self, principal, user):
592
return (self in principal.get_projects() and
593
not self.has_deadline_passed(user))
595
def submit(self, principal, path, revision, who):
596
"""Submit a Subversion path and revision to a project.
598
@param principal: The owner of the Subversion repository, and the
599
entity on behalf of whom the submission is being made
600
@param path: A path within that repository to submit.
601
@param revision: The revision of that path to submit.
602
@param who: The user who is actually making the submission.
605
if not self.can_submit(principal, who):
606
raise DeadlinePassed()
608
a = Assessed.get(Store.of(self), principal, self)
609
ps = ProjectSubmission()
611
ps.revision = revision
612
ps.date_submitted = datetime.datetime.now()
618
def get_permissions(self, user, config):
619
return self.project_set.offering.get_permissions(user, config)
622
def latest_submissions(self):
623
"""Return the latest submission for each Assessed."""
624
return Store.of(self).find(ProjectSubmission,
625
Assessed.project_id == self.id,
626
ProjectSubmission.assessed_id == Assessed.id,
627
ProjectSubmission.date_submitted == Select(
628
Max(ProjectSubmission.date_submitted),
629
ProjectSubmission.assessed_id == Assessed.id,
630
tables=ProjectSubmission
634
def has_deadline_passed(self, user):
635
"""Check whether the deadline has passed."""
636
# XXX: Need to respect extensions.
637
return self.deadline < datetime.datetime.now()
639
def get_submissions_for_principal(self, principal):
640
"""Fetch a ResultSet of all submissions by a particular principal."""
641
assessed = Assessed.get(Store.of(self), principal, self)
644
return assessed.submissions
648
class ProjectGroup(Storm):
649
"""A group of students working together on a project."""
651
__storm_table__ = "project_group"
653
id = Int(name="groupid", primary=True)
654
name = Unicode(name="groupnm")
655
project_set_id = Int(name="projectsetid")
656
project_set = Reference(project_set_id, ProjectSet.id)
658
created_by_id = Int(name="createdby")
659
created_by = Reference(created_by_id, User.id)
662
members = ReferenceSet(id,
663
"ProjectGroupMembership.project_group_id",
664
"ProjectGroupMembership.user_id",
667
__init__ = _kwarg_init
670
return "<%s %s in %r>" % (type(self).__name__, self.name,
671
self.project_set.offering)
674
def display_name(self):
675
"""Returns the "nice name" of the user or group."""
679
def short_name(self):
680
"""Returns the database "identifier" name of the user or group."""
683
def get_projects(self, offering=None, active_only=True):
684
'''Find projects that the group can submit.
686
This will include projects in the project set which owns this group,
687
unless the project set disallows groups (in which case none will be
690
@param active_only: Whether to only search active offerings.
691
@param offering: An optional offering to restrict the search to.
693
return Store.of(self).find(Project,
694
Project.project_set_id == ProjectSet.id,
695
ProjectSet.id == self.project_set.id,
696
ProjectSet.max_students_per_group != None,
697
ProjectSet.offering_id == Offering.id,
698
(offering is None) or (Offering.id == offering.id),
699
Semester.id == Offering.semester_id,
700
(not active_only) or (Semester.state == u'current'))
703
def get_permissions(self, user, config):
704
if user.admin or user in self.members:
705
return set(['submit_project'])
709
class ProjectGroupMembership(Storm):
710
"""A student's membership in a project group."""
712
__storm_table__ = "group_member"
713
__storm_primary__ = "user_id", "project_group_id"
715
user_id = Int(name="loginid")
716
user = Reference(user_id, User.id)
717
project_group_id = Int(name="groupid")
718
project_group = Reference(project_group_id, ProjectGroup.id)
720
__init__ = _kwarg_init
723
return "<%s %r in %r>" % (type(self).__name__, self.user,
726
class Assessed(Storm):
727
"""A composite of a user or group combined with a project.
729
Each project submission and extension refers to an Assessed. It is the
730
sole specifier of the repository and project.
733
__storm_table__ = "assessed"
735
id = Int(name="assessedid", primary=True)
736
user_id = Int(name="loginid")
737
user = Reference(user_id, User.id)
738
project_group_id = Int(name="groupid")
739
project_group = Reference(project_group_id, ProjectGroup.id)
741
project_id = Int(name="projectid")
742
project = Reference(project_id, Project.id)
744
extensions = ReferenceSet(id, 'ProjectExtension.assessed_id')
745
submissions = ReferenceSet(
746
id, 'ProjectSubmission.assessed_id', order_by='date_submitted')
749
return "<%s %r in %r>" % (type(self).__name__,
750
self.user or self.project_group, self.project)
754
"""True if the Assessed is a group, False if it is a user."""
755
return self.project_group is not None
759
return self.project_group or self.user
762
def checkout_location(self):
763
"""Returns the location of the Subversion workspace for this piece of
764
assessment, relative to each group member's home directory."""
765
subjectname = self.project.project_set.offering.subject.short_name
767
checkout_dir_name = self.principal.short_name
769
checkout_dir_name = "mywork"
770
return subjectname + "/" + checkout_dir_name
773
def get(cls, store, principal, project):
774
"""Find or create an Assessed for the given user or group and project.
776
@param principal: The user or group.
777
@param project: The project.
780
if t not in (User, ProjectGroup):
781
raise AssertionError('principal must be User or ProjectGroup')
784
(t is User) or (cls.project_group_id == principal.id),
785
(t is ProjectGroup) or (cls.user_id == principal.id),
786
cls.project_id == project.id).one()
793
a.project_group = principal
800
class ProjectExtension(Storm):
801
"""An extension granted to a user or group on a particular project.
803
The user or group and project are specified by the Assessed.
806
__storm_table__ = "project_extension"
808
id = Int(name="extensionid", primary=True)
809
assessed_id = Int(name="assessedid")
810
assessed = Reference(assessed_id, Assessed.id)
811
deadline = DateTime()
812
approver_id = Int(name="approver")
813
approver = Reference(approver_id, User.id)
816
class ProjectSubmission(Storm):
817
"""A submission from a user or group repository to a particular project.
819
The content of a submission is a single path and revision inside a
820
repository. The repository is that owned by the submission's user and
821
group, while the path and revision are explicit.
823
The user or group and project are specified by the Assessed.
826
__storm_table__ = "project_submission"
828
id = Int(name="submissionid", primary=True)
829
assessed_id = Int(name="assessedid")
830
assessed = Reference(assessed_id, Assessed.id)
833
submitter_id = Int(name="submitter")
834
submitter = Reference(submitter_id, User.id)
835
date_submitted = DateTime()
837
def get_verify_url(self, user):
838
"""Get the URL for verifying this submission, within the account of
840
# If this is a solo project, then self.path will be prefixed with the
841
# subject name. Remove the first path segment.
842
submitpath = self.path[1:] if self.path[:1] == '/' else self.path
843
if not self.assessed.is_group:
844
if '/' in submitpath:
845
submitpath = submitpath.split('/', 1)[1]
848
return "/files/%s/%s/%s?r=%d" % (user.login,
849
self.assessed.checkout_location, submitpath, self.revision)
851
# WORKSHEETS AND EXERCISES #
853
class Exercise(Storm):
854
"""An exercise for students to complete in a worksheet.
856
An exercise may be present in any number of worksheets.
859
__storm_table__ = "exercise"
860
id = Unicode(primary=True, name="identifier")
862
description = Unicode()
868
worksheet_exercises = ReferenceSet(id,
869
'WorksheetExercise.exercise_id')
871
worksheets = ReferenceSet(id,
872
'WorksheetExercise.exercise_id',
873
'WorksheetExercise.worksheet_id',
877
test_suites = ReferenceSet(id,
878
'TestSuite.exercise_id',
881
__init__ = _kwarg_init
884
return "<%s %s>" % (type(self).__name__, self.name)
886
def get_permissions(self, user, config):
887
return self.global_permissions(user, config)
890
def global_permissions(user, config):
891
"""Gets the set of permissions this user has over *all* exercises.
892
This is used to determine who may view the exercises list, and create
900
elif u'lecturer' in set((e.role for e in user.active_enrolments)):
903
elif (config['policy']['tutors_can_edit_worksheets']
904
and u'tutor' in set((e.role for e in user.active_enrolments))):
905
# Site-specific policy on the role of tutors
911
def get_description(self):
912
"""Return the description interpreted as reStructuredText."""
913
return rst(self.description)
916
"""Deletes the exercise, providing it has no associated worksheets."""
917
if (self.worksheet_exercises.count() > 0):
918
raise IntegrityError()
919
for suite in self.test_suites:
921
Store.of(self).remove(self)
923
class Worksheet(Storm):
924
"""A worksheet with exercises for students to complete.
926
Worksheets are owned by offerings.
929
__storm_table__ = "worksheet"
931
id = Int(primary=True, name="worksheetid")
932
offering_id = Int(name="offeringid")
933
identifier = Unicode()
940
attempts = ReferenceSet(id, "ExerciseAttempt.worksheetid")
941
offering = Reference(offering_id, 'Offering.id')
943
all_worksheet_exercises = ReferenceSet(id,
944
'WorksheetExercise.worksheet_id')
946
# Use worksheet_exercises to get access to the *active* WorksheetExercise
947
# objects binding worksheets to exercises. This is required to access the
951
def worksheet_exercises(self):
952
return self.all_worksheet_exercises.find(active=True)
954
__init__ = _kwarg_init
957
return "<%s %s>" % (type(self).__name__, self.name)
959
def remove_all_exercises(self):
960
"""Remove all exercises from this worksheet.
962
This does not delete the exercises themselves. It just removes them
965
store = Store.of(self)
966
for ws_ex in self.all_worksheet_exercises:
967
if ws_ex.saves.count() > 0 or ws_ex.attempts.count() > 0:
968
raise IntegrityError()
969
store.find(WorksheetExercise,
970
WorksheetExercise.worksheet == self).remove()
972
def get_permissions(self, user, config):
973
# Almost the same permissions as for the offering itself
974
perms = self.offering.get_permissions(user, config)
975
# However, "edit" permission is derived from the "edit_worksheets"
976
# permission of the offering
977
if 'edit_worksheets' in perms:
980
perms.discard('edit')
984
"""Returns the xml of this worksheet, converts from rst if required."""
985
if self.format == u'rst':
986
ws_xml = rst(self.data)
992
"""Deletes the worksheet, provided it has no attempts on any exercises.
994
Returns True if delete succeeded, or False if this worksheet has
995
attempts attached."""
996
for ws_ex in self.all_worksheet_exercises:
997
if ws_ex.saves.count() > 0 or ws_ex.attempts.count() > 0:
998
raise IntegrityError()
1000
self.remove_all_exercises()
1001
Store.of(self).remove(self)
1003
class WorksheetExercise(Storm):
1004
"""A link between a worksheet and one of its exercises.
1006
These may be marked optional, in which case the exercise does not count
1007
for marking purposes. The sequence number is used to order the worksheet
1011
__storm_table__ = "worksheet_exercise"
1013
id = Int(primary=True, name="ws_ex_id")
1015
worksheet_id = Int(name="worksheetid")
1016
worksheet = Reference(worksheet_id, Worksheet.id)
1017
exercise_id = Unicode(name="exerciseid")
1018
exercise = Reference(exercise_id, Exercise.id)
1023
saves = ReferenceSet(id, "ExerciseSave.ws_ex_id")
1024
attempts = ReferenceSet(id, "ExerciseAttempt.ws_ex_id")
1026
__init__ = _kwarg_init
1029
return "<%s %s in %s>" % (type(self).__name__, self.exercise.name,
1030
self.worksheet.identifier)
1032
def get_permissions(self, user, config):
1033
return self.worksheet.get_permissions(user, config)
1036
class ExerciseSave(Storm):
1037
"""A potential exercise solution submitted by a user for storage.
1039
This is not an actual tested attempt at an exercise, it's just a save of
1040
the editing session.
1043
__storm_table__ = "exercise_save"
1044
__storm_primary__ = "ws_ex_id", "user_id"
1046
ws_ex_id = Int(name="ws_ex_id")
1047
worksheet_exercise = Reference(ws_ex_id, "WorksheetExercise.id")
1049
user_id = Int(name="loginid")
1050
user = Reference(user_id, User.id)
1054
__init__ = _kwarg_init
1057
return "<%s %s by %s at %s>" % (type(self).__name__,
1058
self.exercise.name, self.user.login, self.date.strftime("%c"))
1060
class ExerciseAttempt(ExerciseSave):
1061
"""An attempt at solving an exercise.
1063
This is a special case of ExerciseSave, used when the user submits a
1064
candidate solution. Like an ExerciseSave, it constitutes exercise solution
1067
In addition, it contains information about the result of the submission:
1069
- complete - True if this submission was successful, rendering this
1070
exercise complete for this user in this worksheet.
1071
- active - True if this submission is "active" (usually true).
1072
Submissions may be de-activated by privileged users for
1073
special reasons, and then they won't count (either as a
1074
penalty or success), but will still be stored.
1077
__storm_table__ = "exercise_attempt"
1078
__storm_primary__ = "ws_ex_id", "user_id", "date"
1080
# The "text" field is the same but has a different name in the DB table
1082
text = Unicode(name="attempt")
1086
def get_permissions(self, user, config):
1087
return set(['view']) if user is self.user else set()
1089
class TestSuite(Storm):
1090
"""A container to group an exercise's test cases.
1092
The test suite contains some information on how to test. The function to
1093
test, variables to set and stdin data are stored here.
1096
__storm_table__ = "test_suite"
1097
__storm_primary__ = "exercise_id", "suiteid"
1100
exercise_id = Unicode(name="exerciseid")
1101
description = Unicode()
1103
function = Unicode()
1105
exercise = Reference(exercise_id, Exercise.id)
1106
test_cases = ReferenceSet(suiteid, 'TestCase.suiteid', order_by="seq_no")
1107
variables = ReferenceSet(suiteid, 'TestSuiteVar.suiteid', order_by='arg_no')
1110
"""Delete this suite, without asking questions."""
1111
for variable in self.variables:
1113
for test_case in self.test_cases:
1115
Store.of(self).remove(self)
1117
class TestCase(Storm):
1118
"""A container for actual tests (see TestCasePart), inside a test suite.
1120
It is the lowest level shown to students on their pass/fail status."""
1122
__storm_table__ = "test_case"
1123
__storm_primary__ = "testid", "suiteid"
1127
suite = Reference(suiteid, "TestSuite.suiteid")
1130
test_default = Unicode() # Currently unused - only used for file matching.
1133
parts = ReferenceSet(testid, "TestCasePart.testid")
1135
__init__ = _kwarg_init
1138
for part in self.parts:
1140
Store.of(self).remove(self)
1142
class TestSuiteVar(Storm):
1143
"""A variable used by an exercise test suite.
1145
This may represent a function argument or a normal variable.
1148
__storm_table__ = "suite_variable"
1149
__storm_primary__ = "varid"
1153
var_name = Unicode()
1154
var_value = Unicode()
1155
var_type = Unicode()
1158
suite = Reference(suiteid, "TestSuite.suiteid")
1160
__init__ = _kwarg_init
1163
Store.of(self).remove(self)
1165
class TestCasePart(Storm):
1166
"""An actual piece of code to test an exercise solution."""
1168
__storm_table__ = "test_case_part"
1169
__storm_primary__ = "partid"
1174
part_type = Unicode()
1175
test_type = Unicode()
1177
filename = Unicode()
1179
test = Reference(testid, "TestCase.testid")
1181
__init__ = _kwarg_init
1184
Store.of(self).remove(self)