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# IVLE - Informatics Virtual Learning Environment
# Copyright (C) 2007-2009 The University of Melbourne
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# Author: Matt Giuca, Nick Chadwick
'''AJAX backend for the tutorial application.'''
import datetime
import genshi
from storm.locals import Store
import ivle.database
from ivle.database import Exercise, ExerciseAttempt, ExerciseSave, Worksheet, \
Offering, Subject, Semester, User, WorksheetExercise
import ivle.worksheet.utils
from ivle.webapp.base.rest import (JSONRESTView, named_operation,
require_permission)
from ivle.webapp.errors import NotFound
TIMESTAMP_FORMAT = '%Y-%m-%d %H:%M:%S'
class AttemptsRESTView(JSONRESTView):
'''REST view of a user's attempts at an exercise.'''
@require_permission('edit')
def GET(self, req):
"""Handles a GET Attempts action."""
attempts = req.store.find(ExerciseAttempt,
ExerciseAttempt.ws_ex_id == self.context.worksheet_exercise.id,
ExerciseAttempt.user_id == self.context.user.id)
# attempts is a list of ExerciseAttempt objects. Convert to dictionaries
time_fmt = lambda dt: datetime.datetime.strftime(dt, TIMESTAMP_FORMAT)
attempts = [{'date': time_fmt(a.date), 'complete': a.complete}
for a in attempts]
return attempts
@require_permission('edit')
def PUT(self, req, data):
""" Tests the given submission """
test_results = ivle.worksheet.utils.test_exercise_submission(
req.config, req.user, self.context.worksheet_exercise.exercise,
data['code'])
attempt = ivle.database.ExerciseAttempt(user=req.user,
worksheet_exercise = self.context.worksheet_exercise,
date = datetime.datetime.now(),
complete = test_results['passed'],
text = unicode(data['code'])
)
req.store.add(attempt)
# Query the DB to get an updated score on whether or not this problem
# has EVER been completed (may be different from "passed", if it has
# been completed before), and the total number of attempts.
completed, attempts = ivle.worksheet.utils.get_exercise_status(
req.store, req.user, self.context.worksheet_exercise)
test_results["completed"] = completed
test_results["attempts"] = attempts
return test_results
class AttemptRESTView(JSONRESTView):
'''REST view of an exercise attempt.'''
@require_permission('view')
def GET(self, req):
return {'code': self.context.text}
class WorksheetExerciseRESTView(JSONRESTView):
'''REST view of a worksheet exercise.'''
@named_operation('view')
def save(self, req, text):
# Find the appropriate WorksheetExercise to save to. If its not found,
# the user is submitting against a non-existant worksheet/exercise
old_save = req.store.find(ExerciseSave,
ExerciseSave.ws_ex_id == self.context.id,
ExerciseSave.user == req.user).one()
#Overwrite the old, or create a new if there isn't one
if old_save is None:
new_save = ExerciseSave()
req.store.add(new_save)
else:
new_save = old_save
new_save.worksheet_exercise = self.context
new_save.user = req.user
new_save.text = unicode(text)
new_save.date = datetime.datetime.now()
return {"result": "ok"}
class WorksheetsRESTView(JSONRESTView):
"""View used to update and create Worksheets."""
@named_operation('edit_worksheets')
def move_up(self, req, worksheetid):
"""Takes a list of worksheet-seq_no pairs and updates their
corresponding Worksheet objects to match."""
worksheet_below = req.store.find(Worksheet,
Worksheet.offering_id == self.context.id,
Worksheet.identifier == unicode(worksheetid)).one()
if worksheet_below is None:
raise NotFound('worksheet_below')
worksheet_above = req.store.find(Worksheet,
Worksheet.offering_id == self.context.id,
Worksheet.seq_no == (worksheet_below.seq_no - 1)).one()
if worksheet_above is None:
raise NotFound('worksheet_above')
worksheet_below.seq_no = worksheet_below.seq_no - 1
worksheet_above.seq_no = worksheet_above.seq_no + 1
return {'result': 'ok'}
@named_operation('edit_worksheets')
def move_down(self, req, worksheetid):
"""Takes a list of worksheet-seq_no pairs and updates their
corresponding Worksheet objects to match."""
worksheet_above = req.store.find(Worksheet,
Worksheet.offering_id == self.context.id,
Worksheet.identifier == unicode(worksheetid)).one()
if worksheet_above is None:
raise NotFound('worksheet_below')
worksheet_below = req.store.find(Worksheet,
Worksheet.offering_id == self.context.id,
Worksheet.seq_no == (worksheet_above.seq_no + 1)).one()
if worksheet_below is None:
raise NotFound('worksheet_above')
worksheet_below.seq_no = worksheet_below.seq_no - 1
worksheet_above.seq_no = worksheet_above.seq_no + 1
return {'result': 'ok'}
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