227
231
"""Find a user in a store by login name."""
228
232
return store.find(cls, cls.login == unicode(login)).one()
230
def get_permissions(self, user):
234
def get_svn_url(self, config):
235
"""Get the subversion repository URL for this user or group."""
236
url = config['urls']['svn_addr']
237
path = 'users/%s' % self.login
238
return urlparse.urljoin(url, path)
240
def get_permissions(self, user, config):
231
241
"""Determine privileges held by a user over this object.
233
243
If the user requesting privileges is this user or an admin,
234
244
they may do everything. Otherwise they may do nothing.
236
246
if user and user.admin or user is self:
237
return set(['view', 'edit', 'submit_project'])
247
return set(['view_public', 'view', 'edit', 'submit_project'])
249
return set(['view_public'])
241
251
# SUBJECTS AND ENROLMENTS #
366
385
Enrolment.offering_id == self.id).one()
367
386
Store.of(enrolment).remove(enrolment)
369
def get_permissions(self, user):
388
def get_permissions(self, user, config):
371
390
if user is not None:
372
391
enrolment = self.get_enrolment(user)
373
392
if enrolment or user.admin:
374
393
perms.add('view')
375
if (enrolment and enrolment.role in (u'tutor', u'lecturer')) \
394
if enrolment and enrolment.role == u'tutor':
395
perms.add('view_project_submissions')
396
# Site-specific policy on the role of tutors
397
if config['policy']['tutors_can_enrol_students']:
399
perms.add('enrol_student')
400
if config['policy']['tutors_can_edit_worksheets']:
401
perms.add('edit_worksheets')
402
if config['policy']['tutors_can_admin_groups']:
403
perms.add('admin_groups')
404
if (enrolment and enrolment.role in (u'lecturer')) or user.admin:
405
perms.add('view_project_submissions')
406
perms.add('admin_groups')
407
perms.add('edit_worksheets')
408
perms.add('view_worksheet_marks')
409
perms.add('edit') # Can edit projects & details
410
perms.add('enrol') # Can see enrolment screen at all
411
perms.add('enrol_student') # Can enrol students
412
perms.add('enrol_tutor') # Can enrol tutors
414
perms.add('enrol_lecturer') # Can enrol lecturers
380
417
def get_enrolment(self, user):
391
428
Enrolment.user_id == User.id,
392
429
Enrolment.offering_id == self.id,
393
430
Enrolment.role == role
431
).order_by(User.login)
397
434
def students(self):
398
435
return self.get_members_by_role(u'student')
437
def get_open_projects_for_user(self, user):
438
"""Find all projects currently open to submissions by a user."""
439
# XXX: Respect extensions.
440
return self.projects.find(Project.deadline > datetime.datetime.now())
442
def has_worksheet_cutoff_passed(self, user):
443
"""Check whether the worksheet cutoff has passed.
444
A user is required, in case we support extensions.
446
if self.worksheet_cutoff is None:
449
return self.worksheet_cutoff < datetime.datetime.now()
451
def clone_worksheets(self, source):
452
"""Clone all worksheets from the specified source to this offering."""
453
import ivle.worksheet.utils
454
for worksheet in source.worksheets:
456
newws.seq_no = worksheet.seq_no
457
newws.identifier = worksheet.identifier
458
newws.name = worksheet.name
459
newws.assessable = worksheet.assessable
460
newws.published = worksheet.published
461
newws.data = worksheet.data
462
newws.format = worksheet.format
463
newws.offering = self
464
Store.of(self).add(newws)
465
ivle.worksheet.utils.update_exerciselist(newws)
400
468
class Enrolment(Storm):
401
469
"""An enrolment of a user in an offering.
453
534
return "<%s %d in %r>" % (type(self).__name__, self.id,
456
def get_permissions(self, user):
457
return self.offering.get_permissions(user)
537
def get_permissions(self, user, config):
538
return self.offering.get_permissions(user, config)
540
def get_groups_for_user(self, user):
541
"""List all groups in this offering of which the user is a member."""
543
return Store.of(self).find(
545
ProjectGroupMembership.user_id == user.id,
546
ProjectGroupMembership.project_group_id == ProjectGroup.id,
547
ProjectGroup.project_set_id == self.id)
549
def get_submission_principal(self, user):
550
"""Get the principal on behalf of which the user can submit.
552
If this is a solo project set, the given user is returned. If
553
the user is a member of exactly one group, all the group is
554
returned. Otherwise, None is returned.
557
groups = self.get_groups_for_user(user)
558
if groups.count() == 1:
567
return self.max_students_per_group is not None
460
570
def assigned(self):
463
573
This will be a Storm ResultSet.
465
575
#If its a solo project, return everyone in offering
466
if self.max_students_per_group is None:
577
return self.project_groups
467
579
return self.offering.students
469
return self.project_groups
581
class DeadlinePassed(Exception):
582
"""An exception indicating that a project cannot be submitted because the
583
deadline has passed."""
587
return "The project deadline has passed"
471
589
class Project(Storm):
472
590
"""A student project for which submissions can be made."""
494
612
return "<%s '%s' in %r>" % (type(self).__name__, self.short_name,
495
613
self.project_set.offering)
497
def can_submit(self, principal):
615
def can_submit(self, principal, user, late=False):
617
@param late: If True, does not take the deadline into account.
498
619
return (self in principal.get_projects() and
499
self.deadline > datetime.datetime.now())
620
(late or not self.has_deadline_passed(user)))
501
def submit(self, principal, path, revision, who):
622
def submit(self, principal, path, revision, who, late=False):
502
623
"""Submit a Subversion path and revision to a project.
504
625
@param principal: The owner of the Subversion repository, and the
506
627
@param path: A path within that repository to submit.
507
628
@param revision: The revision of that path to submit.
508
629
@param who: The user who is actually making the submission.
630
@param late: If True, will not raise a DeadlinePassed exception even
631
after the deadline. (Default False.)
511
if not self.can_submit(principal):
512
raise Exception('cannot submit')
634
if not self.can_submit(principal, who, late=late):
635
raise DeadlinePassed()
514
637
a = Assessed.get(Store.of(self), principal, self)
515
638
ps = ProjectSubmission()
639
# Raise SubmissionError if the path is illegal
640
ps.path = ProjectSubmission.test_and_normalise_path(path)
517
641
ps.revision = revision
518
642
ps.date_submitted = datetime.datetime.now()
664
def has_deadline_passed(self, user):
665
"""Check whether the deadline has passed."""
666
# XXX: Need to respect extensions.
667
return self.deadline < datetime.datetime.now()
669
def get_submissions_for_principal(self, principal):
670
"""Fetch a ResultSet of all submissions by a particular principal."""
671
assessed = Assessed.get(Store.of(self), principal, self)
674
return assessed.submissions
677
def can_delete(self):
678
"""Can only delete if there are no submissions."""
679
return self.submissions.count() == 0
682
"""Delete the project. Fails if can_delete is False."""
683
if not self.can_delete:
684
raise IntegrityError()
685
for assessed in self.assesseds:
687
Store.of(self).remove(self)
541
689
class ProjectGroup(Storm):
542
690
"""A group of students working together on a project."""
592
740
Semester.id == Offering.semester_id,
593
741
(not active_only) or (Semester.state == u'current'))
743
def get_svn_url(self, config):
744
"""Get the subversion repository URL for this user or group."""
745
url = config['urls']['svn_addr']
746
path = 'groups/%s_%s_%s_%s' % (
747
self.project_set.offering.subject.short_name,
748
self.project_set.offering.semester.year,
749
self.project_set.offering.semester.url_name,
752
return urlparse.urljoin(url, path)
596
def get_permissions(self, user):
754
def get_permissions(self, user, config):
597
755
if user.admin or user in self.members:
598
756
return set(['submit_project'])
635
793
project = Reference(project_id, Project.id)
637
795
extensions = ReferenceSet(id, 'ProjectExtension.assessed_id')
638
submissions = ReferenceSet(id, 'ProjectSubmission.assessed_id')
796
submissions = ReferenceSet(
797
id, 'ProjectSubmission.assessed_id', order_by='date_submitted')
640
799
def __repr__(self):
641
800
return "<%s %r in %r>" % (type(self).__name__,
650
809
def principal(self):
651
810
return self.project_group or self.user
813
def checkout_location(self):
814
"""Returns the location of the Subversion workspace for this piece of
815
assessment, relative to each group member's home directory."""
816
subjectname = self.project.project_set.offering.subject.short_name
818
checkout_dir_name = self.principal.short_name
820
checkout_dir_name = "mywork"
821
return subjectname + "/" + checkout_dir_name
654
824
def get(cls, store, principal, project):
655
825
"""Find or create an Assessed for the given user or group and project.
689
867
id = Int(name="extensionid", primary=True)
690
868
assessed_id = Int(name="assessedid")
691
869
assessed = Reference(assessed_id, Assessed.id)
692
deadline = DateTime()
693
871
approver_id = Int(name="approver")
694
872
approver = Reference(approver_id, User.id)
695
873
notes = Unicode()
876
"""Delete the extension."""
877
Store.of(self).remove(self)
879
class SubmissionError(Exception):
880
"""Denotes a validation error during submission."""
697
883
class ProjectSubmission(Storm):
698
884
"""A submission from a user or group repository to a particular project.
715
901
submitter = Reference(submitter_id, User.id)
716
902
date_submitted = DateTime()
904
def get_verify_url(self, user):
905
"""Get the URL for verifying this submission, within the account of
907
# If this is a solo project, then self.path will be prefixed with the
908
# subject name. Remove the first path segment.
909
submitpath = self.path[1:] if self.path[:1] == '/' else self.path
910
if not self.assessed.is_group:
911
if '/' in submitpath:
912
submitpath = submitpath.split('/', 1)[1]
915
return "/files/%s/%s/%s?r=%d" % (user.login,
916
self.assessed.checkout_location, submitpath, self.revision)
918
def get_svn_url(self, config):
919
"""Get subversion URL for this submission"""
920
princ = self.assessed.principal
921
base = princ.get_svn_url(config)
922
if self.path.startswith(os.sep):
923
return os.path.join(base,
924
urllib.quote(self.path[1:].encode('utf-8')))
926
return os.path.join(base, urllib.quote(self.path.encode('utf-8')))
928
def get_svn_export_command(self, req):
929
"""Returns a Unix shell command to export a submission"""
930
svn_url = self.get_svn_url(req.config)
931
_, ext = os.path.splitext(svn_url)
932
username = (req.user.login if req.user.login.isalnum() else
933
"'%s'"%req.user.login)
934
# Export to a file or directory relative to the current directory,
935
# with the student's login name, appended with the submitted file's
937
export_path = self.assessed.principal.short_name + ext
938
return "svn export --username %s -r%d '%s' %s"%(req.user.login,
939
self.revision, svn_url, export_path)
942
def test_and_normalise_path(path):
943
"""Test that path is valid, and normalise it. This prevents possible
944
injections using malicious paths.
945
Returns the updated path, if successful.
946
Raises SubmissionError if invalid.
948
# Ensure the path is absolute to prevent being tacked onto working
950
# Prevent '\n' because it will break all sorts of things.
951
# Prevent '[' and ']' because they can be used to inject into the
953
# Normalise to avoid resulting in ".." path segments.
954
if not os.path.isabs(path):
955
raise SubmissionError("Path is not absolute")
956
if any(c in path for c in "\n[]"):
957
raise SubmissionError("Path must not contain '\\n', '[' or ']'")
958
return os.path.normpath(path)
962
"""True if the project was submitted late."""
963
return self.days_late > 0
967
"""The number of days the project was submitted late (rounded up), or
969
# XXX: Need to respect extensions.
971
(self.date_submitted - self.assessed.project.deadline).days + 1)
719
973
# WORKSHEETS AND EXERCISES #
751
1006
def __repr__(self):
752
1007
return "<%s %s>" % (type(self).__name__, self.name)
754
def get_permissions(self, user):
1009
def get_permissions(self, user, config):
1010
return self.global_permissions(user, config)
1013
def global_permissions(user, config):
1014
"""Gets the set of permissions this user has over *all* exercises.
1015
This is used to determine who may view the exercises list, and create
757
1019
if user is not None:
761
1023
elif u'lecturer' in set((e.role for e in user.active_enrolments)):
762
1024
perms.add('edit')
763
1025
perms.add('view')
764
elif u'tutor' in set((e.role for e in user.active_enrolments)):
1026
elif (config['policy']['tutors_can_edit_worksheets']
1027
and u'tutor' in set((e.role for e in user.active_enrolments))):
1028
# Site-specific policy on the role of tutors
765
1029
perms.add('edit')
766
1030
perms.add('view')
770
def get_description(self):
771
"""Return the description interpreted as reStructuredText."""
772
return rst(self.description)
1034
def _cache_description_xhtml(self, invalidate=False):
1035
# Don't regenerate an existing cache unless forced.
1036
if self._description_xhtml_cache is not None and not invalidate:
1039
if self.description:
1040
self._description_xhtml_cache = rst(self.description)
1042
self._description_xhtml_cache = None
1045
def description_xhtml(self):
1046
"""The XHTML exercise description, converted from reStructuredText."""
1047
self._cache_description_xhtml()
1048
return self._description_xhtml_cache
1050
def set_description(self, description):
1051
self.description = description
1052
self._cache_description_xhtml(invalidate=True)
774
1054
def delete(self):
775
1055
"""Deletes the exercise, providing it has no associated worksheets."""
828
1110
store.find(WorksheetExercise,
829
1111
WorksheetExercise.worksheet == self).remove()
831
def get_permissions(self, user):
832
return self.offering.get_permissions(user)
835
"""Returns the xml of this worksheet, converts from rst if required."""
836
if self.format == u'rst':
837
ws_xml = rst(self.data)
1113
def get_permissions(self, user, config):
1114
offering_perms = self.offering.get_permissions(user, config)
1118
# Anybody who can view an offering can view a published
1120
if 'view' in offering_perms and self.published:
1123
# Any worksheet editors can both view and edit.
1124
if 'edit_worksheets' in offering_perms:
1130
def _cache_data_xhtml(self, invalidate=False):
1131
# Don't regenerate an existing cache unless forced.
1132
if self._data_xhtml_cache is not None and not invalidate:
1135
if self.format == u'rst':
1136
self._data_xhtml_cache = rst(self.data)
1138
self._data_xhtml_cache = None
1141
def data_xhtml(self):
1142
"""The XHTML of this worksheet, converted from rST if required."""
1143
# Update the rST -> XHTML cache, if required.
1144
self._cache_data_xhtml()
1146
if self.format == u'rst':
1147
return self._data_xhtml_cache
840
1149
return self.data
1151
def set_data(self, data):
1153
self._cache_data_xhtml(invalidate=True)
842
1155
def delete(self):
843
1156
"""Deletes the worksheet, provided it has no attempts on any exercises.
880
1193
return "<%s %s in %s>" % (type(self).__name__, self.exercise.name,
881
1194
self.worksheet.identifier)
883
def get_permissions(self, user):
884
return self.worksheet.get_permissions(user)
1196
def get_permissions(self, user, config):
1197
return self.worksheet.get_permissions(user, config)
887
1200
class ExerciseSave(Storm):
added
removed
ivle/database.py
