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# A sample / testing application for IVLE.
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from storm.locals import Desc
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from storm.locals import Desc, Store
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from genshi.filters import HTMLFormFiller
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from genshi.template import Context, TemplateLoader
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import formencode.validators
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from ivle.webapp.base.forms import BaseFormView, URLNameValidator
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from ivle.webapp.base.plugins import ViewPlugin, MediaPlugin
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from ivle.webapp.base.xhtml import XHTMLView
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from ivle.webapp.base.plugins import ViewPlugin, MediaPlugin
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from ivle.webapp.errors import NotFound
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from ivle.database import Subject, Semester
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from ivle.webapp.errors import BadRequest
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from ivle.webapp import ApplicationRoot
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from ivle.database import Subject, Semester, Offering, Enrolment, User,\
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ProjectSet, Project, ProjectSubmission
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from ivle import util
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from ivle.webapp.admin.projectservice import ProjectSetRESTView
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from ivle.webapp.admin.offeringservice import OfferingRESTView
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from ivle.webapp.admin.publishing import (root_to_subject, root_to_semester,
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subject_to_offering, offering_to_projectset, offering_to_project,
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offering_to_enrolment, subject_url, semester_url, offering_url,
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projectset_url, project_url, enrolment_url)
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from ivle.webapp.admin.breadcrumbs import (SubjectBreadcrumb,
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OfferingBreadcrumb, UserBreadcrumb, ProjectBreadcrumb,
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from ivle.webapp.core import Plugin as CorePlugin
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from ivle.webapp.groups import GroupsView
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from ivle.webapp.media import media_url
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from ivle.webapp.tutorial import Plugin as TutorialPlugin
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class SubjectsView(XHTMLView):
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'''The view of the list of subjects.'''
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template = 'subjects.html'
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template = 'templates/subjects.html'
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def authorize(self, req):
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return req.user is not None
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def populate(self, req, ctx):
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ctx['user'] = req.user
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ctx['semesters'] = []
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for semester in req.store.find(Semester).order_by(Desc(Semester.year),
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Desc(Semester.semester)):
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enrolments = semester.enrolments.find(user=req.user)
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if enrolments.count():
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ctx['semesters'].append((semester, enrolments))
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# For admins, show all subjects in the system
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offerings = list(semester.offerings.find())
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offerings = [enrolment.offering for enrolment in
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semester.enrolments.find(user=req.user)]
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ctx['semesters'].append((semester, offerings))
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class SubjectsManage(XHTMLView):
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'''Subject management view.'''
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template = 'templates/subjects-manage.html'
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def authorize(self, req):
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return req.user is not None and req.user.admin
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def populate(self, req, ctx):
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ctx['mediapath'] = media_url(req, CorePlugin, 'images/')
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ctx['SubjectEdit'] = SubjectEdit
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ctx['SemesterEdit'] = SemesterEdit
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ctx['subjects'] = req.store.find(Subject).order_by(Subject.name)
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ctx['semesters'] = req.store.find(Semester).order_by(
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Semester.year, Semester.semester)
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class SubjectShortNameUniquenessValidator(formencode.FancyValidator):
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"""A FormEncode validator that checks that a subject name is unused.
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The subject referenced by state.existing_subject is permitted
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to hold that name. If any other object holds it, the input is rejected.
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def __init__(self, matching=None):
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self.matching = matching
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def _to_python(self, value, state):
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if (state.store.find(
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Subject, short_name=value).one() not in
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(None, state.existing_subject)):
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raise formencode.Invalid(
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'Short name already taken', value, state)
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class SubjectSchema(formencode.Schema):
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short_name = formencode.All(
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SubjectShortNameUniquenessValidator(),
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URLNameValidator(not_empty=True))
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name = formencode.validators.UnicodeString(not_empty=True)
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code = formencode.validators.UnicodeString(not_empty=True)
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class SubjectFormView(BaseFormView):
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"""An abstract form to add or edit a subject."""
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def authorize(self, req):
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return req.user is not None and req.user.admin
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def populate_state(self, state):
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state.existing_subject = None
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return SubjectSchema()
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def get_return_url(self, obj):
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class SubjectNew(SubjectFormView):
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"""A form to create a subject."""
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template = 'templates/subject-new.html'
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def get_default_data(self, req):
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def save_object(self, req, data):
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new_subject = Subject()
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new_subject.short_name = data['short_name']
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new_subject.name = data['name']
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new_subject.code = data['code']
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req.store.add(new_subject)
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class SubjectEdit(SubjectFormView):
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"""A form to edit a subject."""
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template = 'templates/subject-edit.html'
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def populate_state(self, state):
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state.existing_subject = self.context
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def get_default_data(self, req):
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'short_name': self.context.short_name,
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'name': self.context.name,
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'code': self.context.code,
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def save_object(self, req, data):
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self.context.short_name = data['short_name']
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self.context.name = data['name']
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self.context.code = data['code']
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class SemesterUniquenessValidator(formencode.FancyValidator):
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"""A FormEncode validator that checks that a semester is unique.
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There cannot be more than one semester for the same year and semester.
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def _to_python(self, value, state):
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if (state.store.find(
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Semester, year=value['year'], semester=value['semester']
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).one() not in (None, state.existing_semester)):
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raise formencode.Invalid(
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'Semester already exists', value, state)
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class SemesterSchema(formencode.Schema):
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year = URLNameValidator()
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semester = URLNameValidator()
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state = formencode.All(
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formencode.validators.OneOf(["past", "current", "future"]),
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formencode.validators.UnicodeString())
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chained_validators = [SemesterUniquenessValidator()]
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class SemesterFormView(BaseFormView):
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def authorize(self, req):
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return req.user is not None and req.user.admin
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return SemesterSchema()
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def get_return_url(self, obj):
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return '/subjects/+manage'
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class SemesterNew(SemesterFormView):
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"""A form to create a semester."""
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template = 'templates/semester-new.html'
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def populate_state(self, state):
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state.existing_semester = None
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def get_default_data(self, req):
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def save_object(self, req, data):
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new_semester = Semester()
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new_semester.year = data['year']
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new_semester.semester = data['semester']
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new_semester.state = data['state']
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req.store.add(new_semester)
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class SemesterEdit(SemesterFormView):
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"""A form to edit a semester."""
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template = 'templates/semester-edit.html'
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def populate_state(self, state):
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state.existing_semester = self.context
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def get_default_data(self, req):
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'year': self.context.year,
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'semester': self.context.semester,
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'state': self.context.state,
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def save_object(self, req, data):
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self.context.year = data['year']
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self.context.semester = data['semester']
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self.context.state = data['state']
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class OfferingView(XHTMLView):
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"""The home page of an offering."""
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template = 'templates/offering.html'
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def populate(self, req, ctx):
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# Need the worksheet result styles.
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self.plugin_styles[TutorialPlugin] = ['tutorial.css']
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ctx['context'] = self.context
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ctx['permissions'] = self.context.get_permissions(req.user,req.config)
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ctx['format_submission_principal'] = util.format_submission_principal
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ctx['format_datetime'] = ivle.date.make_date_nice
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ctx['format_datetime_short'] = ivle.date.format_datetime_for_paragraph
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ctx['OfferingEdit'] = OfferingEdit
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ctx['OfferingCloneWorksheets'] = OfferingCloneWorksheets
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ctx['GroupsView'] = GroupsView
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ctx['EnrolmentsView'] = EnrolmentsView
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# As we go, calculate the total score for this subject
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# (Assessable worksheets only, mandatory problems only)
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ctx['worksheets'], problems_total, problems_done = (
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ivle.worksheet.utils.create_list_of_fake_worksheets_and_stats(
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req.store, req.user, self.context))
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ctx['exercises_total'] = problems_total
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ctx['exercises_done'] = problems_done
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if problems_total > 0:
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if problems_done >= problems_total:
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ctx['worksheets_complete_class'] = "complete"
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elif problems_done > 0:
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ctx['worksheets_complete_class'] = "semicomplete"
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ctx['worksheets_complete_class'] = "incomplete"
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# Calculate the final percentage and mark for the subject
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(ctx['exercises_pct'], ctx['worksheet_mark'],
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ctx['worksheet_max_mark']) = (
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ivle.worksheet.utils.calculate_mark(
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problems_done, problems_total))
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class SubjectValidator(formencode.FancyValidator):
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"""A FormEncode validator that turns a subject name into a subject.
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The state must have a 'store' attribute, which is the Storm store
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def _to_python(self, value, state):
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subject = state.store.find(Subject, short_name=value).one()
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raise formencode.Invalid('Subject does not exist', value, state)
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class SemesterValidator(formencode.FancyValidator):
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"""A FormEncode validator that turns a string into a semester.
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The string should be of the form 'year/semester', eg. '2009/1'.
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The state must have a 'store' attribute, which is the Storm store
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def _to_python(self, value, state):
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year, semester = value.split('/')
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year = semester = None
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semester = state.store.find(
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Semester, year=year, semester=semester).one()
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raise formencode.Invalid('Semester does not exist', value, state)
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class OfferingUniquenessValidator(formencode.FancyValidator):
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"""A FormEncode validator that checks that an offering is unique.
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There cannot be more than one offering in the same year and semester.
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The offering referenced by state.existing_offering is permitted to
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hold that year and semester tuple. If any other object holds it, the
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def _to_python(self, value, state):
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if (state.store.find(
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Offering, subject=value['subject'],
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semester=value['semester']).one() not in
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(None, state.existing_offering)):
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raise formencode.Invalid(
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'Offering already exists', value, state)
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class OfferingSchema(formencode.Schema):
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description = formencode.validators.UnicodeString(
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if_missing=None, not_empty=False)
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url = formencode.validators.URL(if_missing=None, not_empty=False)
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class OfferingAdminSchema(OfferingSchema):
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subject = formencode.All(
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SubjectValidator(), formencode.validators.UnicodeString())
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semester = formencode.All(
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SemesterValidator(), formencode.validators.UnicodeString())
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chained_validators = [OfferingUniquenessValidator()]
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class OfferingEdit(BaseFormView):
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"""A form to edit an offering's details."""
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template = 'templates/offering-edit.html'
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if self.req.user.admin:
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return OfferingAdminSchema()
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return OfferingSchema()
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def populate(self, req, ctx):
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super(OfferingEdit, self).populate(req, ctx)
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ctx['subjects'] = req.store.find(Subject).order_by(Subject.name)
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ctx['semesters'] = req.store.find(Semester).order_by(
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Semester.year, Semester.semester)
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def populate_state(self, state):
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state.existing_offering = self.context
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def get_default_data(self, req):
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'subject': self.context.subject.short_name,
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'semester': self.context.semester.year + '/' +
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self.context.semester.semester,
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'url': self.context.url,
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'description': self.context.description,
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def save_object(self, req, data):
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self.context.subject = data['subject']
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self.context.semester = data['semester']
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self.context.description = data['description']
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self.context.url = unicode(data['url']) if data['url'] else None
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class OfferingNew(BaseFormView):
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"""A form to create an offering."""
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template = 'templates/offering-new.html'
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def authorize(self, req):
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return req.user is not None and req.user.admin
432
return OfferingAdminSchema()
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def populate(self, req, ctx):
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super(OfferingNew, self).populate(req, ctx)
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ctx['subjects'] = req.store.find(Subject).order_by(Subject.name)
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ctx['semesters'] = req.store.find(Semester).order_by(
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Semester.year, Semester.semester)
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def populate_state(self, state):
441
state.existing_offering = None
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def get_default_data(self, req):
446
def save_object(self, req, data):
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new_offering = Offering()
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new_offering.subject = data['subject']
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new_offering.semester = data['semester']
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new_offering.description = data['description']
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new_offering.url = unicode(data['url']) if data['url'] else None
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req.store.add(new_offering)
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class OfferingCloneWorksheetsSchema(formencode.Schema):
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subject = formencode.All(
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SubjectValidator(), formencode.validators.UnicodeString())
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semester = formencode.All(
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SemesterValidator(), formencode.validators.UnicodeString())
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class OfferingCloneWorksheets(BaseFormView):
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"""A form to clone worksheets from one offering to another."""
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template = 'templates/offering-clone-worksheets.html'
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def authorize(self, req):
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return req.user is not None and req.user.admin
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return OfferingCloneWorksheetsSchema()
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def populate(self, req, ctx):
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super(OfferingCloneWorksheets, self).populate(req, ctx)
478
ctx['subjects'] = req.store.find(Subject).order_by(Subject.name)
479
ctx['semesters'] = req.store.find(Semester).order_by(
480
Semester.year, Semester.semester)
482
def get_default_data(self, req):
485
def save_object(self, req, data):
486
if self.context.worksheets.count() > 0:
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"Cannot clone to target with existing worksheets.")
489
offering = req.store.find(
490
Offering, subject=data['subject'], semester=data['semester']).one()
492
raise BadRequest("No such offering.")
493
if offering.worksheets.count() == 0:
494
raise BadRequest("Source offering has no worksheets.")
496
self.context.clone_worksheets(offering)
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class UserValidator(formencode.FancyValidator):
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"""A FormEncode validator that turns a username into a user.
503
The state must have a 'store' attribute, which is the Storm store
505
def _to_python(self, value, state):
506
user = User.get_by_login(state.store, value)
510
raise formencode.Invalid('User does not exist', value, state)
513
class NoEnrolmentValidator(formencode.FancyValidator):
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"""A FormEncode validator that ensures absence of an enrolment.
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The state must have an 'offering' attribute.
518
def _to_python(self, value, state):
519
if state.offering.get_enrolment(value):
520
raise formencode.Invalid('User already enrolled', value, state)
524
class RoleEnrolmentValidator(formencode.FancyValidator):
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"""A FormEncode validator that checks permission to enrol users with a
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The state must have an 'offering' attribute.
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def _to_python(self, value, state):
531
if (("enrol_" + value) not in
532
state.offering.get_permissions(state.user, state.config)):
533
raise formencode.Invalid('Not allowed to assign users that role',
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class EnrolSchema(formencode.Schema):
539
user = formencode.All(NoEnrolmentValidator(), UserValidator())
540
role = formencode.All(formencode.validators.OneOf(
541
["lecturer", "tutor", "student"]),
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RoleEnrolmentValidator(),
543
formencode.validators.UnicodeString())
546
class EnrolmentsView(XHTMLView):
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"""A page which displays all users enrolled in an offering."""
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template = 'templates/enrolments.html'
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breadcrumb_text = 'Enrolments'
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def populate(self, req, ctx):
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ctx['offering'] = self.context
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ctx['mediapath'] = media_url(req, CorePlugin, 'images/')
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ctx['offering_perms'] = self.context.get_permissions(
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req.user, req.config)
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ctx['EnrolView'] = EnrolView
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ctx['EnrolmentEdit'] = EnrolmentEdit
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ctx['EnrolmentDelete'] = EnrolmentDelete
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class EnrolView(XHTMLView):
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"""A form to enrol a user in an offering."""
566
template = 'templates/enrol.html'
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def filter(self, stream, ctx):
571
return stream | HTMLFormFiller(data=ctx['data'])
573
def populate(self, req, ctx):
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if req.method == 'POST':
575
data = dict(req.get_fieldstorage())
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validator = EnrolSchema()
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req.offering = self.context # XXX: Getting into state.
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data = validator.to_python(data, state=req)
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self.context.enrol(data['user'], data['role'])
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req.throw_redirect(req.uri)
583
except formencode.Invalid, e:
584
errors = e.unpack_errors()
589
ctx['data'] = data or {}
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ctx['offering'] = self.context
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ctx['roles_auth'] = self.context.get_permissions(req.user, req.config)
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ctx['errors'] = errors
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class EnrolmentEditSchema(formencode.Schema):
596
role = formencode.All(formencode.validators.OneOf(
597
["lecturer", "tutor", "student"]),
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RoleEnrolmentValidator(),
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formencode.validators.UnicodeString())
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class EnrolmentEdit(BaseFormView):
603
"""A form to alter an enrolment's role."""
604
template = 'templates/enrolment-edit.html'
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def populate_state(self, state):
609
state.offering = self.context.offering
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def get_default_data(self, req):
612
return {'role': self.context.role}
616
return EnrolmentEditSchema()
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def save_object(self, req, data):
619
self.context.role = data['role']
621
def get_return_url(self, obj):
622
return self.req.publisher.generate(
623
self.context.offering, EnrolmentsView)
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def populate(self, req, ctx):
626
super(EnrolmentEdit, self).populate(req, ctx)
627
ctx['offering_perms'] = self.context.offering.get_permissions(
628
req.user, req.config)
631
class EnrolmentDelete(XHTMLView):
632
"""A form to alter an enrolment's role."""
633
template = 'templates/enrolment-delete.html'
637
def populate(self, req, ctx):
638
# If POSTing, delete delete delete.
639
if req.method == 'POST':
640
self.context.delete()
642
req.throw_redirect(req.publisher.generate(
643
self.context.offering, EnrolmentsView))
645
ctx['enrolment'] = self.context
648
class OfferingProjectsView(XHTMLView):
649
"""View the projects for an offering."""
650
template = 'templates/offering_projects.html'
653
breadcrumb_text = 'Projects'
655
def populate(self, req, ctx):
656
self.plugin_styles[Plugin] = ["project.css"]
657
self.plugin_scripts[Plugin] = ["project.js"]
659
ctx['offering'] = self.context
660
ctx['projectsets'] = []
661
ctx['OfferingRESTView'] = OfferingRESTView
663
#Open the projectset Fragment, and render it for inclusion
664
#into the ProjectSets page
665
#XXX: This could be a lot cleaner
666
loader = genshi.template.TemplateLoader(".", auto_reload=True)
668
set_fragment = os.path.join(os.path.dirname(__file__),
669
"templates/projectset_fragment.html")
670
project_fragment = os.path.join(os.path.dirname(__file__),
671
"templates/project_fragment.html")
673
for projectset in self.context.project_sets:
674
settmpl = loader.load(set_fragment)
677
setCtx['projectset'] = projectset
678
setCtx['projects'] = []
679
setCtx['GroupsView'] = GroupsView
680
setCtx['ProjectSetRESTView'] = ProjectSetRESTView
682
for project in projectset.projects:
683
projecttmpl = loader.load(project_fragment)
684
projectCtx = Context()
685
projectCtx['req'] = req
686
projectCtx['project'] = project
688
setCtx['projects'].append(
689
projecttmpl.generate(projectCtx))
691
ctx['projectsets'].append(settmpl.generate(setCtx))
694
class ProjectView(XHTMLView):
695
"""View the submissions for a ProjectSet"""
696
template = "templates/project.html"
697
permission = "view_project_submissions"
700
def build_subversion_url(self, svnroot, submission):
701
princ = submission.assessed.principal
703
if isinstance(princ, User):
704
path = 'users/%s' % princ.login
706
path = 'groups/%s_%s_%s_%s' % (
707
princ.project_set.offering.subject.short_name,
708
princ.project_set.offering.semester.year,
709
princ.project_set.offering.semester.semester,
712
return urlparse.urljoin(
714
os.path.join(path, submission.path[1:] if
715
submission.path.startswith(os.sep) else
718
def populate(self, req, ctx):
719
self.plugin_styles[Plugin] = ["project.css"]
722
ctx['GroupsView'] = GroupsView
723
ctx['EnrolView'] = EnrolView
724
ctx['format_datetime_short'] = ivle.date.format_datetime_for_paragraph
725
ctx['build_subversion_url'] = self.build_subversion_url
726
ctx['svn_addr'] = req.config['urls']['svn_addr']
727
ctx['project'] = self.context
728
ctx['user'] = req.user
54
730
class Plugin(ViewPlugin, MediaPlugin):
56
('subjects/', SubjectsView),
731
forward_routes = (root_to_subject, root_to_semester, subject_to_offering,
732
offering_to_project, offering_to_projectset,
733
offering_to_enrolment)
735
subject_url, semester_url, offering_url, projectset_url, project_url,
738
views = [(ApplicationRoot, ('subjects', '+index'), SubjectsView),
739
(ApplicationRoot, ('subjects', '+manage'), SubjectsManage),
740
(ApplicationRoot, ('subjects', '+new'), SubjectNew),
741
(ApplicationRoot, ('subjects', '+new-offering'), OfferingNew),
742
(ApplicationRoot, ('+semesters', '+new'), SemesterNew),
743
(Subject, '+edit', SubjectEdit),
744
(Semester, '+edit', SemesterEdit),
745
(Offering, '+index', OfferingView),
746
(Offering, '+edit', OfferingEdit),
747
(Offering, '+clone-worksheets', OfferingCloneWorksheets),
748
(Offering, ('+enrolments', '+index'), EnrolmentsView),
749
(Offering, ('+enrolments', '+new'), EnrolView),
750
(Enrolment, '+edit', EnrolmentEdit),
751
(Enrolment, '+delete', EnrolmentDelete),
752
(Offering, ('+projects', '+index'), OfferingProjectsView),
753
(Project, '+index', ProjectView),
755
(Offering, ('+projectsets', '+new'), OfferingRESTView, 'api'),
756
(ProjectSet, ('+projects', '+new'), ProjectSetRESTView, 'api'),
759
breadcrumbs = {Subject: SubjectBreadcrumb,
760
Offering: OfferingBreadcrumb,
761
User: UserBreadcrumb,
762
Project: ProjectBreadcrumb,
763
Enrolment: EnrolmentBreadcrumb,
60
767
('subjects', 'Subjects',
added
removed
ivle/webapp/admin/subject.py
