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from django import forms
from yaksh.models import (
get_model_class, Profile, Quiz, Question, Course, QuestionPaper, Lesson,
LearningModule
)
from django.contrib.auth import authenticate
from django.contrib.auth.models import User
from django.conf import settings
from django.utils import timezone
from textwrap import dedent
try:
from string import letters
except ImportError:
from string import ascii_letters as letters
from string import punctuation, digits
import pytz
from .send_emails import generate_activation_key
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"),
("integer", "Answer in Integer"),
("string", "Answer in String"),
("float", "Answer in Float"),
("arrange", "Arrange in Correct Order"),
)
test_case_types = (
("standardtestcase", "Standard Testcase"),
("stdiobasedtestcase", "StdIO Based Testcase"),
("mcqtestcase", "MCQ Testcase"),
("hooktestcase", "Hook Testcase"),
("integertestcase", "Integer Testcase"),
("stringtestcase", "String Testcase"),
("floattestcase", "Float 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 clean_email(self):
user_email = self.cleaned_data['email']
if User.objects.filter(email=user_email).exists():
raise forms.ValidationError("This email already exists")
return user_email
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"]
if settings.IS_DEVELOPMENT:
new_profile.is_email_verified = True
else:
new_profile.activation_key = generate_activation_key(
new_user.username)
new_profile.key_expiry_time = timezone.now() + timezone.timedelta(
minutes=20)
new_profile.save()
return u_name, pwd, new_user.email, new_profile.activation_key
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 ExerciseForm(forms.ModelForm):
class Meta:
model = Quiz
fields = ['description', 'view_answerpaper', 'active']
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):
super(QuizForm, self).__init__(*args, **kwargs)
self.fields["instructions"].initial = dedent("""\
<p>
This examination system has been developed with the intention of
making you learn programming and be assessed in an interactive and
fun manner.You will be presented with a series of programming
questions and problems that you will answer online and get
immediate feedback for.
</p><p>Here are some important instructions and rules that you
should understand carefully.</p>
<ul><li>For any programming questions, you can submit solutions as
many times as you want without a penalty. You may skip questions
and solve them later.</li><li> You <strong>may</strong>
use your computer's Python/IPython shell or an editor to solve the
problem and cut/paste the solution to the web interface.
</li><li> <strong>You are not allowed to use any internet resources
i.e. no google etc.</strong>
</li>
<li> Do not copy or share the questions or answers with anyone
until the exam is complete <strong>for everyone</strong>.
</li><li> <strong>All</strong> your attempts at the questions are
logged. Do not try to outsmart and break the testing system.
If you do, we know who you are and we will expel you from the
course. You have been warned.
</li></ul>
<p>We hope you enjoy taking this exam !!!</p>
""")
class Meta:
model = Quiz
exclude = ["is_trial", "creator", "is_exercise"]
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', 'active']
class FileForm(forms.Form):
file_field = forms.FileField(widget=forms.ClearableFileInput(
attrs={'multiple': True}),
required=False)
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 = [(None, '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):
""" course form for moderators """
def save(self, commit=True, *args, **kwargs):
instance = super(CourseForm, self).save(commit=False)
if instance.code:
instance.hidden = True
else:
instance.hidden = False
if commit:
instance.save()
return instance
class Meta:
model = Course
fields = ['name', 'enrollment', 'active', 'code', 'instructions',
'start_enroll_time', 'end_enroll_time']
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()
class QuestionPaperForm(forms.ModelForm):
class Meta:
model = QuestionPaper
fields = ['shuffle_questions', 'shuffle_testcases']
class LessonForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
super(LessonForm, self).__init__(*args, **kwargs)
des_msg = "Enter Lesson Description as Markdown text"
name_msg = "Enter Lesson Name"
self.fields['description'].widget.attrs['placeholder'] = des_msg
self.fields['name'].widget.attrs['placeholder'] = name_msg
class Meta:
model = Lesson
exclude = ['completed_lessons', 'creator', 'html_data']
class LessonFileForm(forms.Form):
Lesson_files = forms.FileField(widget=forms.ClearableFileInput(
attrs={'multiple': True}),
required=False)
class LearningModuleForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
super(LearningModuleForm, self).__init__(*args, **kwargs)
name_msg = "Enter Learning Module Name"
self.fields['name'].widget.attrs['placeholder'] = name_msg
self.fields['name'].widget.attrs['size'] = 30
class Meta:
model = LearningModule
fields = ['name', 'description', 'active']
|