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from django import forms
from exam.models import Profile, Quiz, Question, TestCase
from django.contrib.auth import authenticate
from django.contrib.auth.models import User
from taggit.managers import TaggableManager
from taggit.forms import TagField
from taggit_autocomplete_modified.managers import TaggableManagerAutocomplete
from taggit_autocomplete_modified.widgets import TagAutocomplete
from taggit_autocomplete_modified import settings
from django.forms.models import inlineformset_factory
from string import letters, punctuation, digits
import datetime
languages = (
("select", "Select Language"),
("python", "Python"),
("bash", "Bash"),
("C", "C Language"),
("C++", "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"),
)
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))
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.')
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.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.Form):
"""Creates a form to add or edit a Quiz.
It has the related fields and functions required."""
def __init__(self, *args, **kwargs):
super(QuizForm, self).__init__(*args, **kwargs)
quizzes = [('', 'Select a prerequisite quiz')]
quizzes = quizzes + \
list(Quiz.objects.values_list('id', 'description'))
self.fields['prerequisite'] = forms.CharField(required=False,
widget=forms.Select(choices=quizzes))
start_date = forms.DateField(initial=datetime.date.today)
duration = forms.IntegerField(help_text='Will be taken in minutes')
active = forms.BooleanField(required=False)
description = forms.CharField(max_length=256, widget=forms.Textarea\
(attrs={'cols': 20, 'rows': 1}))
pass_criteria = forms.FloatField(initial=40,
help_text='Will be taken as percentage')
language = forms.CharField(widget=forms.Select(choices=languages))
attempts_allowed = forms.IntegerField(widget=forms.Select(choices=attempts))
time_between_attempts = forms.IntegerField\
(widget=forms.Select(choices=days_between_attempts),
help_text='Will be in days')
def save(self):
start_date = self.cleaned_data["start_date"]
duration = self.cleaned_data["duration"]
active = self.cleaned_data['active']
description = self.cleaned_data["description"]
pass_criteria = self.cleaned_data["pass_criteria"]
language = self.cleaned_data["language"]
prerequisite = self.cleaned_data["prerequisite"]
attempts_allowed = self.cleaned_data["attempts_allowed"]
time_between_attempts = self.cleaned_data["time_between_attempts"]
new_quiz = Quiz()
new_quiz.start_date = start_date
new_quiz.duration = duration
new_quiz.active = active
new_quiz.description = description
new_quiz.pass_criteria = pass_criteria
new_quiz.language = language
new_quiz.prerequisite_id = prerequisite
new_quiz.attempts_allowed = attempts_allowed
new_quiz.time_between_attempts = time_between_attempts
new_quiz.save()
class QuestionForm(forms.ModelForm):
"""Creates a form to add or edit a Question.
It has the related fields and functions required."""
summary = forms.CharField(widget=forms.Textarea\
(attrs={'cols': 40, 'rows': 1}))
description = forms.CharField(widget=forms.Textarea\
(attrs={'cols': 40, 'rows': 1}))
points = forms.FloatField()
test = forms.CharField(widget=forms.Textarea\
(attrs={'cols': 40, 'rows': 1}), required=False)
options = forms.CharField(widget=forms.Textarea\
(attrs={'cols': 40, 'rows': 1}), required=False)
language = forms.CharField(max_length=20, widget=forms.Select\
(choices=languages))
type = forms.CharField(max_length=8, widget=forms.Select\
(choices=question_types))
active = forms.BooleanField(required=False)
tags = TagField(widget=TagAutocomplete(), required=False)
snippet = forms.CharField(widget=forms.Textarea\
(attrs={'cols': 40, 'rows': 1}), required=False)
ref_code_path = forms.CharField(widget=forms.Textarea\
(attrs={'cols': 40, 'rows': 1}), required=False)
def save(self, commit=True):
summary = self.cleaned_data.get("summary")
description = self.cleaned_data.get("description")
points = self.cleaned_data.get("points")
options = self.cleaned_data.get("options")
language = self.cleaned_data.get("language")
type = self.cleaned_data.get("type")
active = self.cleaned_data.get("active")
snippet = self.cleaned_data.get("snippet")
new_question = Question()
new_question.summary = summary
new_question.description = description
new_question.points = points
new_question.test = test
new_question.options = options
new_question.language = language
new_question.type = type
new_question.active = active
new_question.snippet = snippet
new_question = super(QuestionForm, self).save(commit=False)
if commit:
new_question.save()
return new_question
class Meta:
model = Question
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)
TestCaseFormSet = inlineformset_factory(Question, TestCase,\
can_order=False, can_delete=False, extra=1)
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