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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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# Module: TutorialService
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# Provides the AJAX backend for the tutorial application.
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# This allows several actions to be performed on the code the student has
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# typed into one of the exercise boxes.
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# The arguments determine what is to be done on this file.
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# "exercise" - The path to a exercise file (including the .xml extension),
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# relative to the subjects base directory.
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# "code" - Full text of the student's code being submitted.
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# "action". May be "test". (More to come).
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# Returns a JSON response string indicating the results.
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from common import (db, util)
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"""Handler for Ajax backend TutorialService app."""
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# Set request attributes
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req.write_html_head_foot = False # No HTML
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req.throw_error(req.HTTP_BAD_REQUEST)
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# Get all the arguments, if POST.
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# Ignore arguments if not POST, since we aren't allowed to cause
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# side-effects on the server.
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fields = req.get_fieldstorage()
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act = fields.getfirst('action')
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exercise = fields.getfirst('exercise')
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code = fields.getfirst('code')
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if exercise == None or code == None or act == None:
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req.throw_error(req.HTTP_BAD_REQUEST)
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exercise = exercise.value
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handle_save(req, exercise, code, fields)
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handle_test(req, exercise, code, fields)
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handle_run(req, exercise, code, fields)
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req.throw_error(req.HTTP_BAD_REQUEST)
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def handle_save(req, exercise, code, fields):
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"""Handles a save action. This saves the user's code without executing it.
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# Need to open JUST so we know this is a real exercise.
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# (This avoids users submitting code for bogus exercises).
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exercisefile = util.open_exercise_file(exercise)
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if exercisefile is None:
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req.throw_error(req.HTTP_NOT_FOUND,
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"The exercise was not found.")
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req.write('{"result": "ok"}')
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conn.write_problem_save(
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login = req.user.login,
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exercisename = exercise,
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date = time.localtime(),
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def handle_test(req, exercise, code, fields):
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"""Handles a test action."""
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exercisefile = util.open_exercise_file(exercise)
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if exercisefile is None:
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req.throw_error(req.HTTP_NOT_FOUND,
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"The exercise was not found.")
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# Parse the file into a exercise object using the test suite
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exercise_obj = test.parse_exercise_file(exercisefile)
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# Run the test cases. Get the result back as a JSONable object.
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test_results = exercise_obj.run_tests(code)
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conn.insert_problem_attempt(
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login = req.user.login,
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exercisename = exercise,
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date = time.localtime(),
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# Author: Matt Giuca, Nick Chadwick
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'''AJAX backend for the tutorial application.'''
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from storm.locals import Store
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from ivle.database import Exercise, ExerciseAttempt, ExerciseSave, Worksheet, \
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Offering, Subject, Semester, User, WorksheetExercise
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import ivle.worksheet.utils
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from ivle.webapp.base.rest import (JSONRESTView, write_operation,
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from ivle.webapp.errors import NotFound
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TIMESTAMP_FORMAT = '%Y-%m-%d %H:%M:%S'
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class AttemptsRESTView(JSONRESTView):
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'''REST view of a user's attempts at an exercise.'''
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@require_permission('edit')
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"""Handles a GET Attempts action."""
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attempts = req.store.find(ExerciseAttempt,
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ExerciseAttempt.ws_ex_id == self.context.worksheet_exercise.id,
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ExerciseAttempt.user_id == self.context.user.id)
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# attempts is a list of ExerciseAttempt objects. Convert to dictionaries
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time_fmt = lambda dt: datetime.datetime.strftime(dt, TIMESTAMP_FORMAT)
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attempts = [{'date': time_fmt(a.date), 'complete': a.complete}
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@require_permission('edit')
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def PUT(self, req, data):
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""" Tests the given submission """
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test_results = ivle.worksheet.utils.test_exercise_submission(
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req.config, req.user, self.context.worksheet_exercise.exercise,
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attempt = ivle.database.ExerciseAttempt(user=req.user,
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worksheet_exercise = self.context.worksheet_exercise,
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date = datetime.datetime.now(),
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complete = test_results['passed'],
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text = unicode(data['code'])
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req.store.add(attempt)
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# Query the DB to get an updated score on whether or not this problem
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# has EVER been completed (may be different from "passed", if it has
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# been completed before), and the total number of attempts.
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completed, attempts = conn.get_problem_status(req.user.login,
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completed, attempts = ivle.worksheet.utils.get_exercise_status(
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req.store, req.user, self.context.worksheet_exercise)
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test_results["completed"] = completed
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test_results["attempts"] = attempts
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req.write(cjson.encode(test_results))
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def handle_run(req, exercise, code, fields):
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"""Handles a run action."""
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# Extremely makeshift.
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# For now, just echo the code back
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out_json = {"stdout": output}
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req.write(cjson.encode(out_json))
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class AttemptRESTView(JSONRESTView):
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'''REST view of an exercise attempt.'''
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@require_permission('view')
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return {'code': self.context.text}
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class WorksheetExerciseRESTView(JSONRESTView):
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'''REST view of a worksheet exercise.'''
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@write_operation('view')
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def save(self, req, text):
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# Find the appropriate WorksheetExercise to save to. If its not found,
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# the user is submitting against a non-existant worksheet/exercise
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old_save = req.store.find(ExerciseSave,
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ExerciseSave.ws_ex_id == self.context.id,
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ExerciseSave.user == req.user).one()
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#Overwrite the old, or create a new if there isn't one
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new_save = ExerciseSave()
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req.store.add(new_save)
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new_save.worksheet_exercise = self.context
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new_save.user = req.user
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new_save.text = unicode(text)
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new_save.date = datetime.datetime.now()
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return {"result": "ok"}
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class WorksheetsRESTView(JSONRESTView):
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"""View used to update and create Worksheets."""
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@write_operation('edit_worksheets')
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def move_up(self, req, worksheetid):
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"""Takes a list of worksheet-seq_no pairs and updates their
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corresponding Worksheet objects to match."""
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worksheet_below = req.store.find(Worksheet,
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Worksheet.offering_id == self.context.id,
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Worksheet.identifier == unicode(worksheetid)).one()
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if worksheet_below is None:
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raise NotFound('worksheet_below')
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worksheet_above = req.store.find(Worksheet,
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Worksheet.offering_id == self.context.id,
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Worksheet.seq_no == (worksheet_below.seq_no - 1)).one()
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if worksheet_above is None:
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raise NotFound('worksheet_above')
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worksheet_below.seq_no = worksheet_below.seq_no - 1
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worksheet_above.seq_no = worksheet_above.seq_no + 1
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return {'result': 'ok'}
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@write_operation('edit_worksheets')
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def move_down(self, req, worksheetid):
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"""Takes a list of worksheet-seq_no pairs and updates their
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corresponding Worksheet objects to match."""
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worksheet_above = req.store.find(Worksheet,
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Worksheet.offering_id == self.context.id,
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Worksheet.identifier == unicode(worksheetid)).one()
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if worksheet_above is None:
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raise NotFound('worksheet_below')
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worksheet_below = req.store.find(Worksheet,
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Worksheet.offering_id == self.context.id,
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Worksheet.seq_no == (worksheet_above.seq_no + 1)).one()
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if worksheet_below is None:
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raise NotFound('worksheet_above')
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worksheet_below.seq_no = worksheet_below.seq_no - 1
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worksheet_above.seq_no = worksheet_above.seq_no + 1
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return {'result': 'ok'}