189
184
'''A sanely ordered list of all of the user's enrolments.'''
190
185
return self._get_enrolments(False)
192
def get_projects(self, offering=None, active_only=True):
193
'''Return Projects that the user can submit.
195
This will include projects for offerings in which the user is
196
enrolled, as long as the project is not in a project set which has
197
groups (ie. if maximum number of group members is 0).
199
Unless active_only is False, only projects for active offerings will
202
If an offering is specified, returned projects will be limited to
203
those for that offering.
205
return Store.of(self).find(Project,
206
Project.project_set_id == ProjectSet.id,
207
ProjectSet.max_students_per_group == None,
208
ProjectSet.offering_id == Offering.id,
209
(offering is None) or (Offering.id == offering.id),
210
Semester.id == Offering.semester_id,
211
(not active_only) or (Semester.state == u'current'),
212
Enrolment.offering_id == Offering.id,
213
Enrolment.user_id == self.id)
216
188
def hash_password(password):
217
return hashlib.md5(password).hexdigest()
189
return md5.md5(password).hexdigest()
220
192
def get_by_login(cls, store, login):
307
261
project_sets = ReferenceSet(id, 'ProjectSet.offering_id')
309
worksheets = ReferenceSet(id,
310
'Worksheet.offering_id',
314
263
__init__ = _kwarg_init
316
265
def __repr__(self):
317
266
return "<%s %r in %r>" % (type(self).__name__, self.subject,
320
def enrol(self, user, role=u'student'):
269
def enrol(self, user):
321
270
'''Enrol a user in this offering.'''
322
enrolment = Store.of(self).find(Enrolment,
323
Enrolment.user_id == user.id,
324
Enrolment.offering_id == self.id).one()
326
if enrolment is None:
327
enrolment = Enrolment(user=user, offering=self)
328
self.enrolments.add(enrolment)
330
enrolment.active = True
331
enrolment.role = role
333
def unenrol(self, user):
334
'''Unenrol a user from this offering.'''
335
enrolment = Store.of(self).find(Enrolment,
336
Enrolment.user_id == user.id,
337
Enrolment.offering_id == self.id).one()
338
Store.of(enrolment).remove(enrolment)
340
def get_permissions(self, user):
343
enrolment = self.get_enrolment(user)
344
if enrolment or user.admin:
346
if (enrolment and enrolment.role in (u'tutor', u'lecturer')) \
351
def get_enrolment(self, user):
353
enrolment = self.enrolments.find(user=user).one()
271
# We'll get a horrible database constraint violation error if we try
272
# to add a second enrolment.
273
if Store.of(self).find(Enrolment,
274
Enrolment.user_id == user.id,
275
Enrolment.offering_id == self.id).count() == 1:
276
raise AlreadyEnrolledError()
278
e = Enrolment(user=user, offering=self, active=True)
279
self.enrolments.add(e)
359
281
class Enrolment(Storm):
360
282
__storm_table__ = "enrolment"
405
329
__storm_table__ = "project"
407
331
id = Int(name="projectid", primary=True)
409
short_name = Unicode()
410
332
synopsis = Unicode()
412
334
project_set_id = Int(name="projectsetid")
413
335
project_set = Reference(project_set_id, ProjectSet.id)
414
336
deadline = DateTime()
416
assesseds = ReferenceSet(id, 'Assessed.project_id')
417
submissions = ReferenceSet(id,
418
'Assessed.project_id',
420
'ProjectSubmission.assessed_id')
422
338
__init__ = _kwarg_init
424
340
def __repr__(self):
425
return "<%s '%s' in %r>" % (type(self).__name__, self.short_name,
341
return "<%s '%s' in %r>" % (type(self).__name__, self.synopsis,
426
342
self.project_set.offering)
428
def can_submit(self, principal):
429
return (self in principal.get_projects() and
430
self.deadline > datetime.datetime.now())
432
def submit(self, principal, path, revision, who):
433
"""Submit a Subversion path and revision to a project.
435
'principal' is the owner of the Subversion repository, and the
436
entity on behalf of whom the submission is being made. 'path' is
437
a path within that repository, and 'revision' specifies which
438
revision of that path. 'who' is the person making the submission.
441
if not self.can_submit(principal):
442
raise Exception('cannot submit')
444
a = Assessed.get(Store.of(self), principal, self)
445
ps = ProjectSubmission()
447
ps.revision = revision
448
ps.date_submitted = datetime.datetime.now()
455
344
class ProjectGroup(Storm):
456
345
__storm_table__ = "project_group"
475
364
return "<%s %s in %r>" % (type(self).__name__, self.name,
476
365
self.project_set.offering)
479
def display_name(self):
480
return '%s (%s)' % (self.nick, self.name)
482
def get_projects(self, offering=None, active_only=True):
483
'''Return Projects that the group can submit.
485
This will include projects in the project set which owns this group,
486
unless the project set disallows groups (in which case none will be
489
Unless active_only is False, projects will only be returned if the
490
group's offering is active.
492
If an offering is specified, projects will only be returned if it
495
return Store.of(self).find(Project,
496
Project.project_set_id == ProjectSet.id,
497
ProjectSet.id == self.project_set.id,
498
ProjectSet.max_students_per_group != None,
499
ProjectSet.offering_id == Offering.id,
500
(offering is None) or (Offering.id == offering.id),
501
Semester.id == Offering.semester_id,
502
(not active_only) or (Semester.state == u'current'))
505
def get_permissions(self, user):
506
if user.admin or user in self.members:
507
return set(['submit_project'])
511
367
class ProjectGroupMembership(Storm):
512
368
__storm_table__ = "group_member"
513
369
__storm_primary__ = "user_id", "project_group_id"
523
379
return "<%s %r in %r>" % (type(self).__name__, self.user,
524
380
self.project_group)
526
class Assessed(Storm):
527
__storm_table__ = "assessed"
529
id = Int(name="assessedid", primary=True)
530
user_id = Int(name="loginid")
531
user = Reference(user_id, User.id)
532
project_group_id = Int(name="groupid")
533
project_group = Reference(project_group_id, ProjectGroup.id)
535
project_id = Int(name="projectid")
536
project = Reference(project_id, Project.id)
538
extensions = ReferenceSet(id, 'ProjectExtension.assessed_id')
539
submissions = ReferenceSet(id, 'ProjectSubmission.assessed_id')
542
return "<%s %r in %r>" % (type(self).__name__,
543
self.user or self.project_group, self.project)
546
def get(cls, store, principal, project):
548
if t not in (User, ProjectGroup):
549
raise AssertionError('principal must be User or ProjectGroup')
552
(t is User) or (cls.project_group_id == principal.id),
553
(t is ProjectGroup) or (cls.user_id == principal.id),
554
Project.id == project.id).one()
561
a.project_group = principal
568
class ProjectExtension(Storm):
569
__storm_table__ = "project_extension"
571
id = Int(name="extensionid", primary=True)
572
assessed_id = Int(name="assessedid")
573
assessed = Reference(assessed_id, Assessed.id)
574
deadline = DateTime()
575
approver_id = Int(name="approver")
576
approver = Reference(approver_id, User.id)
579
class ProjectSubmission(Storm):
580
__storm_table__ = "project_submission"
582
id = Int(name="submissionid", primary=True)
583
assessed_id = Int(name="assessedid")
584
assessed = Reference(assessed_id, Assessed.id)
587
submitter_id = Int(name="submitter")
588
submitter = Reference(submitter_id, User.id)
589
date_submitted = DateTime()
592
382
# WORKSHEETS AND EXERCISES #
594
384
class Exercise(Storm):
595
__storm_table__ = "exercise"
596
id = Unicode(primary=True, name="identifier")
598
description = Unicode()
385
# Note: Table "problem" is called "Exercise" in the Object layer, since
386
# it's called that everywhere else.
387
__storm_table__ = "problem"
604
worksheet_exercises = ReferenceSet(id,
605
'WorksheetExercise.exercise_id')
389
id = Int(primary=True, name="problemid")
390
name = Unicode(name="identifier")
607
393
worksheets = ReferenceSet(id,
608
394
'WorksheetExercise.exercise_id',
609
395
'WorksheetExercise.worksheet_id',
613
test_suites = ReferenceSet(id,
614
'TestSuite.exercise_id',
617
399
__init__ = _kwarg_init
619
401
def __repr__(self):
620
402
return "<%s %s>" % (type(self).__name__, self.name)
622
def get_permissions(self, user):
629
elif 'lecturer' in set((e.role for e in user.active_enrolments)):
635
def get_description(self):
636
return rst(self.description)
639
"""Deletes the exercise, providing it has no associated worksheets."""
640
if (self.worksheet_exercises.count() > 0):
641
raise IntegrityError()
642
for suite in self.test_suites:
644
Store.of(self).remove(self)
405
def get_by_name(cls, store, name):
407
Get the Exercise from the db associated with a given store and name.
408
If the exercise is not in the database, creates it and inserts it
411
ex = store.find(cls, cls.name == unicode(name)).one()
414
ex = Exercise(name=unicode(name))
646
419
class Worksheet(Storm):
647
420
__storm_table__ = "worksheet"
649
422
id = Int(primary=True, name="worksheetid")
650
offering_id = Int(name="offeringid")
651
identifier = Unicode()
423
# XXX subject is not linked to a Subject object. This is a property of
424
# the database, and will be refactored.
426
name = Unicode(name="identifier")
653
427
assessable = Bool()
658
attempts = ReferenceSet(id, "ExerciseAttempt.worksheetid")
659
offering = Reference(offering_id, 'Offering.id')
661
all_worksheet_exercises = ReferenceSet(id,
430
exercises = ReferenceSet(id,
431
'WorksheetExercise.worksheet_id',
432
'WorksheetExercise.exercise_id',
434
# Use worksheet_exercises to get access to the WorksheetExercise objects
435
# binding worksheets to exercises. This is required to access the
437
worksheet_exercises = ReferenceSet(id,
662
438
'WorksheetExercise.worksheet_id')
664
# Use worksheet_exercises to get access to the *active* WorksheetExercise
665
# objects binding worksheets to exercises. This is required to access the
669
def worksheet_exercises(self):
670
return self.all_worksheet_exercises.find(active=True)
672
440
__init__ = _kwarg_init
674
442
def __repr__(self):
675
443
return "<%s %s>" % (type(self).__name__, self.name)
677
def remove_all_exercises(self):
445
# XXX Refactor this - make it an instance method of Subject rather than a
446
# class method of Worksheet. Can't do that now because Subject isn't
447
# linked referentially to the Worksheet.
449
def get_by_name(cls, store, subjectname, worksheetname):
451
Get the Worksheet from the db associated with a given store, subject
452
name and worksheet name.
454
return store.find(cls, cls.subject == unicode(subjectname),
455
cls.name == unicode(worksheetname)).one()
457
def remove_all_exercises(self, store):
679
459
Remove all exercises from this worksheet.
680
460
This does not delete the exercises themselves. It just removes them
681
461
from the worksheet.
683
store = Store.of(self)
684
for ws_ex in self.all_worksheet_exercises:
685
if ws_ex.saves.count() > 0 or ws_ex.attempts.count() > 0:
686
raise IntegrityError()
687
463
store.find(WorksheetExercise,
688
464
WorksheetExercise.worksheet == self).remove()
690
def get_permissions(self, user):
691
return self.offering.get_permissions(user)
694
"""Returns the xml of this worksheet, converts from rst if required."""
695
if self.format == u'rst':
696
ws_xml = rst(self.data)
702
"""Deletes the worksheet, provided it has no attempts on any exercises.
704
Returns True if delete succeeded, or False if this worksheet has
705
attempts attached."""
706
for ws_ex in self.all_worksheet_exercises:
707
if ws_ex.saves.count() > 0 or ws_ex.attempts.count() > 0:
708
raise IntegrityError()
710
self.remove_all_exercises()
711
Store.of(self).remove(self)
713
466
class WorksheetExercise(Storm):
714
__storm_table__ = "worksheet_exercise"
716
id = Int(primary=True, name="ws_ex_id")
467
__storm_table__ = "worksheet_problem"
468
__storm_primary__ = "worksheet_id", "exercise_id"
718
470
worksheet_id = Int(name="worksheetid")
719
471
worksheet = Reference(worksheet_id, Worksheet.id)
720
exercise_id = Unicode(name="exerciseid")
472
exercise_id = Int(name="problemid")
721
473
exercise = Reference(exercise_id, Exercise.id)
722
474
optional = Bool()
726
saves = ReferenceSet(id, "ExerciseSave.ws_ex_id")
727
attempts = ReferenceSet(id, "ExerciseAttempt.ws_ex_id")
729
476
__init__ = _kwarg_init
731
478
def __repr__(self):
732
479
return "<%s %s in %s>" % (type(self).__name__, self.exercise.name,
733
self.worksheet.identifier)
735
def get_permissions(self, user):
736
return self.worksheet.get_permissions(user)
739
482
class ExerciseSave(Storm):
775
517
they won't count (either as a penalty or success), but will still be
778
__storm_table__ = "exercise_attempt"
779
__storm_primary__ = "ws_ex_id", "user_id", "date"
520
__storm_table__ = "problem_attempt"
521
__storm_primary__ = "exercise_id", "user_id", "date"
781
523
# The "text" field is the same but has a different name in the DB table
782
524
# for some reason.
783
525
text = Unicode(name="attempt")
784
526
complete = Bool()
787
529
def get_permissions(self, user):
788
530
return set(['view']) if user is self.user else set()
790
class TestSuite(Storm):
791
"""A Testsuite acts as a container for the test cases of an exercise."""
792
__storm_table__ = "test_suite"
793
__storm_primary__ = "exercise_id", "suiteid"
796
exercise_id = Unicode(name="exerciseid")
797
description = Unicode()
801
exercise = Reference(exercise_id, Exercise.id)
802
test_cases = ReferenceSet(suiteid, 'TestCase.suiteid', order_by="seq_no")
803
variables = ReferenceSet(suiteid, 'TestSuiteVar.suiteid', order_by='arg_no')
806
"""Delete this suite, without asking questions."""
807
for vaariable in self.variables:
809
for test_case in self.test_cases:
811
Store.of(self).remove(self)
813
class TestCase(Storm):
814
"""A TestCase is a member of a TestSuite.
816
It contains the data necessary to check if an exercise is correct"""
817
__storm_table__ = "test_case"
818
__storm_primary__ = "testid", "suiteid"
822
suite = Reference(suiteid, "TestSuite.suiteid")
825
test_default = Unicode()
828
parts = ReferenceSet(testid, "TestCasePart.testid")
830
__init__ = _kwarg_init
833
for part in self.parts:
835
Store.of(self).remove(self)
837
class TestSuiteVar(Storm):
838
"""A container for the arguments of a Test Suite"""
839
__storm_table__ = "suite_variable"
840
__storm_primary__ = "varid"
845
var_value = Unicode()
849
suite = Reference(suiteid, "TestSuite.suiteid")
851
__init__ = _kwarg_init
854
Store.of(self).remove(self)
856
class TestCasePart(Storm):
857
"""A container for the test elements of a Test Case"""
858
__storm_table__ = "test_case_part"
859
__storm_primary__ = "partid"
864
part_type = Unicode()
865
test_type = Unicode()
869
test = Reference(testid, "TestCase.testid")
871
__init__ = _kwarg_init
874
Store.of(self).remove(self)