Merge pull request #99 from adityacp/fix_timezone

Fix timezone

5 files changed, 34 insertions, 8 deletions

diff --git a/yaksh/forms.py b/yaksh/forms.py
index 808262b..26e0967 100644
--- a/yaksh/forms.py
+++ b/yaksh/forms.py
@@ -11,6 +11,7 @@ from django.forms.models import inlineformset_factory
 from django.db.models import Q
 from string import letters, punctuation, digits
 import datetime
+import pytz
 
 languages = (
     ("select", "Select Language"),
@@ -73,6 +74,8 @@ class UserRegisterForm(forms.Form):
                 (max_length=64, help_text='Department you work/study at')
     position = forms.CharField\
         (max_length=64, help_text='Student/Faculty/Researcher/Industry/etc.')
+    timezone = forms.ChoiceField(choices=[(tz, tz) for tz in pytz.common_timezones],
+                                initial=pytz.utc)
 
     def clean_username(self):
         u_name = self.cleaned_data["username"]
@@ -118,6 +121,7 @@ class UserRegisterForm(forms.Form):
         new_profile.institute = cleaned_data["institute"]
         new_profile.department = cleaned_data["department"]
         new_profile.position = cleaned_data["position"]
+        new_profile.timezone = cleaned_data["timezone"]
         new_profile.save()
 
         return u_name, pwd
@@ -208,7 +212,7 @@ class ProfileForm(forms.ModelForm):
     class Meta:
         model = Profile
         fields = ['first_name', 'last_name', 'institute',
-                'department', 'roll_number', 'position']
+                'department', 'roll_number', 'position', 'timezone']
 
     first_name = forms.CharField(max_length=30)
     last_name = forms.CharField(max_length=30)
diff --git a/yaksh/middleware/user_time_zone.py b/yaksh/middleware/user_time_zone.py
new file mode 100644
index 0000000..f1aace9
--- /dev/null
+++ b/yaksh/middleware/user_time_zone.py
@@ -0,0 +1,15 @@
+import pytz
+
+from django.utils import timezone
+
+
+class TimezoneMiddleware(object):
+    """ Middleware to get user's timezone and activate timezone 
+        if user timezone is not available default value 'UTC' is activated """
+    def process_request(self, request):
+        user = request.user
+        if hasattr(user, 'profile'):
+            user_tz = user.profile.timezone
+            timezone.activate(pytz.timezone(user_tz))
+        else:
+            timezone.activate(pytz.timezone('UTC'))
diff --git a/yaksh/models.py b/yaksh/models.py
index 32fb0d0..6ee02e1 100644
--- a/yaksh/models.py
+++ b/yaksh/models.py
@@ -8,7 +8,8 @@ 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
+import pytz
 
 languages = (
         ("python", "Python"),
@@ -144,6 +145,8 @@ class Profile(models.Model):
     institute = models.CharField(max_length=128)
     department = models.CharField(max_length=64)
     position = models.CharField(max_length=64)
+    timezone = models.CharField(max_length=64,
+                                choices=[(tz, tz) for tz in pytz.common_timezones])
 
 
 ###############################################################################
@@ -291,12 +294,14 @@ class Quiz(models.Model):
 
     # The start date of the quiz.
     start_date_time = models.DateTimeField("Start Date and Time of the quiz",
-                                        default=datetime.now(),
+                                        default=timezone.now(),
                                         null=True)
 
     # The end date and time of the quiz
     end_date_time = models.DateTimeField("End Date and Time of the quiz",
-                                        default=datetime(2199, 1, 1, 0, 0, 0, 0),
+                                        default=datetime(2199, 1, 1,
+                                        tzinfo=pytz.timezone\
+                                        (timezone.get_current_timezone_name())),
                                         null=True)
 
     # This is always in minutes.
@@ -331,7 +336,7 @@ class Quiz(models.Model):
 
 
     def is_expired(self):
-        return not self.start_date_time <= datetime.now() < self.end_date_time
+        return not self.start_date_time <= timezone.now() < self.end_date_time
 
     def has_prerequisite(self):
         return True if self.prerequisite else False
@@ -409,7 +414,7 @@ class QuestionPaper(models.Model):
             last_attempt = AnswerPaper.objects.get_user_last_attempt(user=user,
                            questionpaper=self)
             if last_attempt:
-                time_lag = (datetime.today() - last_attempt.start_time).days
+                time_lag = (datetime.today() - last_attempt.start_time.replace(tzinfo=None)).days
                 return time_lag >= self.quiz.time_between_attempts
             else:
                 return True
diff --git a/yaksh/templates/yaksh/intro.html b/yaksh/templates/yaksh/intro.html
index 1ed82e2..f05e9a1 100644
--- a/yaksh/templates/yaksh/intro.html
+++ b/yaksh/templates/yaksh/intro.html
@@ -12,7 +12,9 @@
               </div>
          {% else %}
               <div class="alert">
-                  You can attempt this Quiz at any time between {{ questionpaper.quiz.start_date_time }} GMT and {{ questionpaper.quiz.end_date_time }} GMT
+              {% load tz %}
+              {% get_current_timezone as TIME_ZONE %}
+                  You can attempt this Quiz at any time between {{ questionpaper.quiz.start_date_time }} {{ TIME_ZONE }} and {{ questionpaper.quiz.end_date_time }} {{ TIME_ZONE }}
                   <br/>
                   You are not allowed to attempt the Quiz before or after this duration
               <br/>
diff --git a/yaksh/templates/yaksh/quizzes_user.html b/yaksh/templates/yaksh/quizzes_user.html
index 223952e..6403a21 100644
--- a/yaksh/templates/yaksh/quizzes_user.html
+++ b/yaksh/templates/yaksh/quizzes_user.html
@@ -42,7 +42,7 @@
                 {% if cannot_attempt %}
                     <p>You have not passed the prerequisite & hence you cannot take the quiz.</p>
                 {% endif %}
-                <h4>List of quizzes availbale for you</h4>
+                <h4>List of quizzes available for you</h4>
                 {% if not quizzes %}
                     <h5>No active quizzes for you</h5>
                 {% endif %}