Fix #201.

The issue is that when the ouput directory is set to
`tempfile.gettempdir()` the user nobody cannot stat the created
directory on OS X.  The code server therefore is unable to see the
directory resulting in problems.  Instead we create the directory inside
the application as it was done earlier.

1 files changed, 14 insertions, 15 deletions

diff --git a/yaksh/models.py b/yaksh/models.py
index 7e0ce16..7d7da3f 100644
--- a/yaksh/models.py
+++ b/yaksh/models.py
@@ -1,14 +1,10 @@
 from __future__ import unicode_literals
 from datetime import datetime, timedelta
 import json
-from random import sample, shuffle
-from itertools import islice, cycle
+from random import sample
 from collections import Counter
-from textwrap import dedent
 from django.db import models
-from django.db.models import Q
 from django.contrib.auth.models import User
-from django.forms.models import model_to_dict
 from django.contrib.contenttypes.models import ContentType
 from taggit.managers import TaggableManager
 from django.utils import timezone
@@ -20,7 +16,7 @@ except ImportError:
 import pytz
 import os
 import stat
-from os.path import join, abspath, dirname, exists
+from os.path import join, exists
 import shutil
 import zipfile
 import tempfile
@@ -30,6 +26,7 @@ from yaksh.xmlrpc_clients import code_server
 from django.conf import settings
 
 
+
 languages = (
         ("python", "Python"),
         ("bash", "Bash"),
@@ -69,7 +66,7 @@ test_status = (
               )
 
 def get_assignment_dir(instance, filename):
-    return '%s/%s/%s' % (instance.user.user, instance.assignmentQuestion.id, filename)
+    return join(instance.user.user, instance.assignmentQuestion.id, filename)
 
 def get_model_class(model):
     ctype = ContentType.objects.get(app_label="yaksh", model=model)
@@ -82,7 +79,7 @@ def has_profile(user):
     return True if hasattr(user, 'profile') else False
 
 def get_upload_dir(instance, filename):
-    return "question_%s/%s" % (instance.question.id, filename)
+    return join('question_%s' % (instance.question.id), filename)
 
 
 ###############################################################################
@@ -216,6 +213,9 @@ class Profile(models.Model):
         """Return the output directory for the user."""
 
         user_dir = join(settings.OUTPUT_DIR, str(self.user.username))
+        if not exists(user_dir):
+            os.makedirs(user_dir)
+            os.chmod(user_dir, stat.S_IRWXU | stat.S_IRWXG | stat.S_IRWXO)
         return user_dir
 
 
@@ -477,10 +477,10 @@ class QuizManager(models.Manager):
         trial_quiz_name = "Trial_orig_id_{0}_{1}".format(original_quiz_id,
                                                         "godmode" if godmode else "usermode"
                                                         )
-        
+
         if self.filter(description=trial_quiz_name).exists():
             trial_quiz = self.get(description=trial_quiz_name)
-            
+
         else:
             trial_quiz = self.get(id=original_quiz_id)
             trial_quiz.course.enroll(False, user)
@@ -577,7 +577,7 @@ class Quiz(models.Model):
                                         language='Python', prerequisite=None,
                                         course=course)
         return demo_quiz
-    
+
     def __str__(self):
         desc = self.description or 'Quiz'
         return '%s: on %s for %d minutes' % (desc, self.start_date_time,
@@ -719,7 +719,7 @@ class QuestionPaper(models.Model):
         # add fixed set of questions to the question paper
         for question in questions:
             question_paper.fixed_questions.add(question)
-    
+
     def __str__(self):
         return "Question Paper for " + self.quiz.description
 
@@ -1121,11 +1121,11 @@ class AnswerPaper(models.Model):
         user_answer.correct = result.get('success')
         user_answer.error = result.get('error')
         if result.get('success'):
-            user_answer.marks = (question.points * result['weight'] / 
+            user_answer.marks = (question.points * result['weight'] /
                 question.get_maximum_test_case_weight()) \
                 if question.partial_grading and question.type == 'code' else question.points
         else:
-            user_answer.marks = (question.points * result['weight'] / 
+            user_answer.marks = (question.points * result['weight'] /
                 question.get_maximum_test_case_weight()) \
                 if question.partial_grading and question.type == 'code' else 0
         user_answer.save()
@@ -1222,4 +1222,3 @@ class HookTestCase(TestCase):
 
     def __str__(self):
         return u'Hook Testcase | Correct: {0}'.format(self.hook_code)
-