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from django import forms
from yaksh.models import get_model_class, Profile, Quiz, Question, TestCase, Course, StandardTestCase, StdioBasedTestCase
from django.contrib.auth import authenticate
from django.contrib.auth.models import User
from django.contrib.contenttypes.models import ContentType
from taggit.managers import TaggableManager
from taggit.forms import TagField
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"),
("python", "Python"),
("bash", "Bash"),
("c", "C Language"),
("cpp", "C++ Language"),
("java", "Java Language"),
("scilab", "Scilab"),
)
question_types = (
("select", "Select Question Type"),
("mcq", "Multiple Choice"),
("mcc", "Multiple Correct Choices"),
("code", "Code"),
("upload", "Assignment Upload"),
)
test_case_types = (
("standardtestcase", "Standard Testcase"),
("stdiobasedtestcase", "Stdio Based Testcase"),
("mcqtestcase", "MCQ Testcase"),
)
UNAME_CHARS = letters + "._" + digits
PWD_CHARS = letters + punctuation + digits
attempts = [(i, i) for i in range(1, 6)]
attempts.append((-1, 'Infinite'))
days_between_attempts = ((j, j) for j in range(401))
def get_object_form(model, exclude_fields=None):
model_class = get_model_class(model)
class _ObjectForm(forms.ModelForm):
class Meta:
model = model_class
exclude = exclude_fields
return _ObjectForm
class UserRegisterForm(forms.Form):
"""A Class to create new form for User's Registration.
It has the various fields and functions required to register
a new user to the system"""
username = forms.CharField(max_length=30, help_text='Letters, digits,\
period and underscores only.')
email = forms.EmailField()
password = forms.CharField(max_length=30, widget=forms.PasswordInput())
confirm_password = forms.CharField\
(max_length=30, widget=forms.PasswordInput())
first_name = forms.CharField(max_length=30)
last_name = forms.CharField(max_length=30)
roll_number = forms.CharField\
(max_length=30, help_text="Use a dummy if you don't have one.")
institute = forms.CharField\
(max_length=128, help_text='Institute/Organization')
department = forms.CharField\
(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"]
if u_name.strip(UNAME_CHARS):
msg = "Only letters, digits, period and underscore characters are"\
" allowed in username"
raise forms.ValidationError(msg)
try:
User.objects.get(username__exact=u_name)
raise forms.ValidationError("Username already exists.")
except User.DoesNotExist:
return u_name
def clean_password(self):
pwd = self.cleaned_data['password']
if pwd.strip(PWD_CHARS):
raise forms.ValidationError("Only letters, digits and punctuation\
are allowed in password")
return pwd
def clean_confirm_password(self):
c_pwd = self.cleaned_data['confirm_password']
pwd = self.data['password']
if c_pwd != pwd:
raise forms.ValidationError("Passwords do not match")
return c_pwd
def save(self):
u_name = self.cleaned_data["username"]
u_name = u_name.lower()
pwd = self.cleaned_data["password"]
email = self.cleaned_data['email']
new_user = User.objects.create_user(u_name, email, pwd)
new_user.first_name = self.cleaned_data["first_name"]
new_user.last_name = self.cleaned_data["last_name"]
new_user.save()
cleaned_data = self.cleaned_data
new_profile = Profile(user=new_user)
new_profile.roll_number = cleaned_data["roll_number"]
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
class UserLoginForm(forms.Form):
"""Creates a form which will allow the user to log into the system."""
username = forms.CharField(max_length=30)
password = forms.CharField(max_length=30, widget=forms.PasswordInput())
def clean(self):
super(UserLoginForm, self).clean()
try:
u_name, pwd = self.cleaned_data["username"],\
self.cleaned_data["password"]
user = authenticate(username=u_name, password=pwd)
except Exception:
raise forms.ValidationError\
("Username and/or Password is not entered")
if not user:
raise forms.ValidationError("Invalid username/password")
return user
class QuizForm(forms.ModelForm):
"""Creates a form to add or edit a Quiz.
It has the related fields and functions required."""
def __init__(self, *args, **kwargs):
user = kwargs.pop('user')
super(QuizForm, self).__init__(*args, **kwargs)
self.fields['prerequisite'] = forms.ModelChoiceField(
queryset=Quiz.objects.filter(course__creator=user))
self.fields['prerequisite'].required = False
self.fields['course'] = forms.ModelChoiceField(
queryset=Course.objects.filter(Q(creator=user)|
Q(teachers=user)).distinct())
class Meta:
model = Quiz
exclude = ["is_trial"]
class QuestionForm(forms.ModelForm):
"""Creates a form to add or edit a Question.
It has the related fields and functions required."""
class Meta:
model = Question
exclude = ['user']
class RandomQuestionForm(forms.Form):
question_type = forms.CharField(max_length=8, widget=forms.Select\
(choices=question_types))
marks = forms.CharField(max_length=8, widget=forms.Select\
(choices=(('select', 'Select Marks'),)))
shuffle_questions = forms.BooleanField(required=False)
class QuestionFilterForm(forms.Form):
def __init__(self, *args, **kwargs):
user = kwargs.pop("user")
super(QuestionFilterForm, self).__init__(*args, **kwargs)
questions = Question.objects.filter(user_id=user.id)
points_list = questions.values_list('points', flat=True).distinct()
points_options = [('select', 'Select Marks')]
points_options.extend([(point, point) for point in points_list])
self.fields['marks'] = forms.FloatField(widget=forms.Select\
(choices=points_options))
language = forms.CharField(max_length=8, widget=forms.Select\
(choices=languages))
question_type = forms.CharField(max_length=8, widget=forms.Select\
(choices=question_types))
class CourseForm(forms.ModelForm):
class Meta:
model = Course
fields = ['name', 'active', 'enrollment']
class ProfileForm(forms.ModelForm):
""" profile form for students and moderators """
class Meta:
model = Profile
fields = ['first_name', 'last_name', 'institute',
'department', 'roll_number', 'position', 'timezone']
first_name = forms.CharField(max_length=30)
last_name = forms.CharField(max_length=30)
def __init__(self, *args, **kwargs):
if 'user' in kwargs:
user = kwargs.pop('user')
super(ProfileForm, self).__init__(*args, **kwargs)
self.fields['first_name'].initial = user.first_name
self.fields['last_name'].initial = user.last_name
class UploadFileForm(forms.Form):
file = forms.FileField()
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