Django community: RSS
This page, updated regularly, aggregates Django Q&A from the Django community.
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django-rest-frameworks bad request in production for returning json
I want to show some data on the home page when user visits the app. So in development it works. but this returns bad request in production. App is deployed on heroku. I get this on the console: The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol. So I added this setting: REST_FRAMEWORK = { 'DEFAULT_METADATA_CLASS': 'rest_framework.metadata.SimpleMetadata' } Still does not work for a simple json? -
how a django application can interact with users/clients local device filesystem?
I have made an application using django which has a feature to download the contents which are fetched from some other sources and I have hosted it on heroku. By default, the contents that the user downloads gets stored in the heroku cloud where application files resides.But i want those contents to get downloaded in user's local file system. How can i do so ? Please guide -
unable to save hashed password in django
hope so y'all are well, so yesterday I was trying to save hashed password in Django, but I was getting a TypeError saying Password must be a string or bytes, got DeferredAttribute. I don't know why this isn't working and many people making tutorials on youtube have done it, and they didn't get any errors like this one. Any help would be appreciated. Here is the code snippet containing the password saving code from views.py -> def registered(request): if request.method == "POST": customer_email=request.POST.get('email') customer_password=request.POST.get('password') customer_address=request.POST.get('address') register=person(customer_email=customer_email,customer_password=customer_password, customer_a> person.customer_password = make_password(person.customer_password) #set_password(customer_password) register.save() return render(request, 'registerednow.html') and here is my models.py -> from django.contrib.auth.hashers import make_password from django.db import models # Create your models here. class person(models.Model): customer_email = models.EmailField(max_length=254, primary_key=True) customer_password = models.CharField(max_length=128) customer_address = models.CharField(max_length=200) -
Comparing timezone.now() in views.py to DateTimeField in models.py
I would like to create a To-Do list in which I can schedule date and time of each task. My goal is to get some sort of response whenever the supplied datetime is equal to the current time. For example I scheduled Do laundry for Monday at 6pm on a Saturday evening. Two days later (on Monday at 6pm) I would like to get a notification that I should Do laundry. Notice that the key idea can be found in the index() function in views.py in the first rows including the if-statement. Here is my code: urls.py from django.urls import path from . import views urlpatterns = [ path("", views.index, name="index"), path("<int:aufgabenzettel_id>", views.details, name="details"), path("add/", views.add, name="add"), path("delete/<int:aufgabenzettel_id>", views.delete, name="delete"), path("edit/<int:aufgabenzettel_id>", views.edit, name="edit"), path("update/<int:aufgabenzettel_id>", views.update, name="update") ] models.py from django.db import models # Create your models here. class Aufgabenzettel(models.Model): Aufgabeselbst = models.CharField(max_length=64) Datum = models.DateTimeField(auto_now_add=True) Geplant = models.DateTimeField(auto_now_add=False, auto_now=False) def __str__(self): return f"{self.Aufgabeselbst}" views.py (the important part can be found in the index function in the first rows including the if-statement) from django.db.models.fields import DateTimeField from django.http.response import HttpResponseRedirect from django.shortcuts import render from django.urls import reverse from django.utils import timezone from datetime import datetime from .models import Aufgabenzettel # … -
Error when executing git push heroku master; error building wheel for psycopg2
if anyone has any suggestions on how to solve this issue, much help would be appreciated. The code block snippet is part of the output I got after I ran : git push heroku master Building wheel for heroku (setup.py): started Building wheel for heroku (setup.py): finished with status 'done' Created wheel for heroku: filename=heroku-0.1.4-py3-none-any.whl size=12355 sha256=378a742bc792fbfc72bae052d3476b5b45b87056cde50f37948ccd2020809f86 Stored in directory: /tmp/pip-ephem-wheel-cache-8hm1391h/wheels/61/7f/9a/af879a4e9e8d6ff17b1cdfe66336fbc86ea9e30707097515b9 **Building wheel for psycopg2 (setup.py): started Building wheel for psycopg2 (setup.py): finished with status 'error' ERROR: Command errored out with exit status 1: command: /app/.heroku/python/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-v9mazsjs/psycopg2/setup.py'"'"'; __file__='"'"'/tmp/pip-install-v9mazsjs/psycopg2/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-16yhh4dp cwd: /tmp/pip-install-v9mazsjs/psycopg2/** This below is my requirements.txt file, I tried to debug multiple times based off previous threads but this problem still resurfaces. HELPPPPP asgiref==3.3.4 boto3==1.17.90 botocore==1.20.90 certifi==2021.5.30 chardet==4.0.0 dj-database-url==0.5.0 Django==3.2.4 django-crispy-forms==1.11.2 django-db-signals==0.1.1 django-heroku==0.3.1 django-on-heroku==1.1.2 django-storages==1.11.1 gunicorn==20.1.0 heroku==0.1.4 idna==2.10 jmespath==0.10.0 oc==0.2.1 pexpect==4.8.0 Pillow==8.2.0 psycopg2==2.7.5 psycopg2-binary==2.8.3 ptyprocess==0.7.0 python-dateutil==2.8.1 pytz==2021.1 requests==2.25.1 s3transfer==0.4.2 six==1.16.0 sqlparse==0.4.1 typing-extensions==3.10.0.0 urllib3==1.26.5 whitenoise==5.2.0 -
Change how does UpdateView looks like
For update class: class PostUpdateView(LoginRequiredMixin, UserPassesTestMixin, UpdateView): model = Post fields = ['title', 'content_don'] def form_valid(self, form): form.instance.author = self.request.user return super().form_valid(form) def test_func(self): post = self.get_object() if self.request.user == post.author: return True return False I would like to have different 'templates'. My 'CreateView' class uses this html template: {% extends "blog/base.html" %} {% load crispy_forms_tags %} {% block content %} <div class="content-section"> <form method="POST" enctype="multipart/form-data"> {% csrf_token %} <fieldset class="form-group"> <legend class="border-bottom mb-4">Define task</legend> {{ form|crispy }} </fieldset> <div class="form-group"> <button class="btn btn-outline-info" type="submit">Submit</button> </div> </form> </div> {% endblock content %} I would like to use a different one for a UpdateView, and I would create many different templates, depending on User (what are buttons names, change title, different fields, different choices, etc). How can I define a different 'looks' for a same or different UpdateView class, but all must change same POST, under defined PK. Url.py path('post/new/', PostCreateView.as_view(), name='post-create'), path('post/<int:pk>/update/', PostUpdateView.as_view(), name='post-update'), path('post/<int:pk>/delete/', PostDeleteView.as_view(), name='post-delete'), -
How to fetch self and friends posts on django model
Profile.py class Profile(models.Model): user = models.OneToOneField(User, on_delete=models.CASCADE) image = models.ImageField(default='default.png', upload_to='profile_pics') slug = AutoSlugField(populate_from='user') bio = models.TextField(blank=True) friends = models.ManyToManyField("Profile", blank=True) def __str__(self): return str(self.user.username) def get_absolute_url(self): return "/users/{}".format(self.slug) class PostListView(ListView): model = PostForNewsFeed template_name = 'feed/home.html' context_object_name = 'posts' ordering = ['-date_posted'] paginate_by = 10 count_hit = True slug_field = 'slug' def get_context_data(self, **kwargs): context = super(PostListView, self).get_context_data(**kwargs) context.update({ 'popular_posts': PostForNewsFeed.objects.order_by('-hit_count_generic__hits')[:3], }) if self.request.user.is_authenticated: liked = [i for i in PostForNewsFeed.objects.all() if Like.objects.filter(user = self.request.user, post=i)] context['liked_post'] = liked return context How to fetch Posts from self and friends posts via orm query? -
Django>=3.2 and MySQL
Did something change with Django>=3.2 with respect to MySQL. I have not changed my database credentials. python manage.py runserver and python manage.py shell_plus work just fine. python manage.py dbshell returns ERROR 1045 (28000): Access denied for user 'user'@'localhost' (using password: YES) CommandError: "mysql --user=user --host=localhost --default-character-set=utf8mb4 my_project_db" returned non-zero exit status 1. Two questions... How do I "update" my credentials so dbshell works? What changed? -
Git, github: Git pull origin [branch name] vs git checkout -t origin/[branch name]
I would like to pull branch from remote repository to webserver. which one is correct? Git pull origin [branch name] vs git checkout -t origin/[branch name] The jobs on branch is now totally different with the main one. so now I would like to manage B on branch and A on main seperately. so I think I will push/pull B only to branch and A only to main. Is that a good idea? or better way for this plan? I would like to hear your opinion for better, efficient job Thanks in advance -
how to pass pk using django and react
i want to pass pk using react to django like this when using only django <a class="btn btn-default" href="{% url 'blog:comment' pk=blog.pk %}">Add comment</a> but i dont know how to pass pk using react template!! this is my django models.py from django.db import models # Create your models here. class Meeting(models.Model): title = models.CharField(max_length=50) topic = models.TextField() writer = models.CharField(max_length=30) parties = models.TextField() meeting_date = models.DateTimeField() date = models.DateTimeField(auto_now=True) file = models.FileField('media/') def __str__(self): return self.title class Result(models.Model): meeting = models.OneToOneField( Meeting, on_delete=models.CASCADE, primary_key=True, ) script = models.TextField() keyword = models.TextField() summary = models.TextField() and this is my models.py from django.shortcuts import render, get_object_or_404, redirect from .models import Meeting, Result from .stt import * def resultCreate(request, pk): meeting = get_object_or_404(Meeting, pk=pk) result = Result() audio = meeting.file[22:] if __name__ == '__main__': res = ClovaSpeechClient().req_upload(file=audio, completion='sync') data = res.text result.script = data["text"] result.save() return redirect('/result/' + str(meeting.id)) and this is Detail.js (frontend) import React from "react"; import Footer from "../component/Footer"; import Header from "../component/Header"; import { Box, Heading, Table, Text, Button } from "gestalt"; import "gestalt/dist/gestalt.css"; class Detail extends React.Component { componentDidMount() { const { location, history } = this.props; if (location.state === undefined) { history.push("/"); } } createResult() { window.location.href … -
Django Rest Framework Serializer DateTimeField validates input data as AD and not take input with month 2(FEB) having more than 29 days
I am taking input date from the application, which they provide in BS which is Nepali Calendar system, this however created a problem for validation, as month number 2 ie. feb in AD has only 29 days whereas in BS it has 31 days serializer.is_valid(): gives error that the date is not in correct format What can i do to reevaluate my validation process -
Return different ManyToMany objects based on param using Django and DRF
I'm trying to figure out if what's the best way to implement this behavior: I have an object of type "Recipe", whose related model "IngredientRecipe" is obtained from a list of "Products" with information about its "Supplier". A recipe may have "beef" as an ingredient and this ingredient is supplied by several suppliers. What I want to obtain is a recipe whose list of ingredients corresponds to the ingredients supplied by the suppliers of the selected location. For example: https://api.url/recipes/34/?location=1 This would return the detail of the recipe with id=34 and the list of ingredients but from the location with id=1. That is, the price of the ingredient "beef" will be the one corresponding to the supplier of the location id=1. models.py: class Recipe(models.Model): user = models.ForeignKey(User, null=True, on_delete=models.CASCADE, related_name='user_recipes') title = models.CharField(_('Recipe title'), max_length=255, blank=True) class IngredientRecipe(models.Model): product = models.ForeignKey(Product, on_delete=models.CASCADE, related_name='products') recipe = models.ForeignKey(Recipe, on_delete=models.CASCADE, related_name='ingredients') quantity = models.FloatField(_('Quantity')) class Product(models.Model): name = models.CharField(_('Name'), max_length=255) price = models.FloatField(_('Sale price'), default=0) supplier = models.ForeignKey(Supplier, blank=True, null=True, related_name='supplier_products', on_delete=models.CASCADE) class Supplier(models.Model): name = models.CharField(_('Name'), max_length=255) location = models.ForeignKey(Location, on_delete=models.CASCADE) Right now I'm using ModelViewSets and ModelSerializers to render saving my objects. Thank you very much in advance. -
Object of type ProductImage is not JSON serializable
I am getting this error Object of type ProductImage is not JSON serializable I am trying to make model in which I can add multiple images using ManytoManyFeild().and I then I want to serialize it so that I can send it to and show on frontend page. here is my models: from django.db import models class Product(models.Model): id = models.IntegerField(unique=True,primary_key=True) title = models.CharField(max_length=200) description = models.TextField(max_length= 100000 ,null=True, blank=True) price = models.FloatField() count = models.IntegerField(default=1) file_content = models.ManyToManyField("ProductImage", related_name='file_content', blank=True, null=True) offer= models.BooleanField(default=False) def __str__(self): return self.title class ProductImage(models.Model): property_id = models.ForeignKey(Product,on_delete=models.CASCADE ,null=True, blank=True) media = models.FileField(upload_to='pics') def __str__(self): return '%s-image' % (self.property_id.title) and here is my serializer.py: from rest_framework import serializers from . models import Product, ProductImage class ProductImageSerializer(serializers.ModelSerializer): class Meta: model = ProductImage fields = [ 'property_id','media'] class ProductSerializer(serializers.ModelSerializer): file_content = ProductImageSerializer(many=True) class Meta: model = Product fields = ['id', 'title','description', 'price','count', 'file_content', 'offer'] extra_kwargs = { "file_content": { "required": False, } } and here is my Views.py: from rest_framework.serializers import Serializer from . models import Product, ProductImage from rest_framework.response import Response from . serializer import ProductSerializer from rest_framework import status from rest_framework.parsers import MultiPartParser, FormParser from rest_framework.decorators import api_view, permission_classes, parser_classes from rest_framework.permissions import IsAuthenticated @api_view(['POST','GET']) @permission_classes([IsAuthenticated]) … -
Django get the sum of all columns for a particular user
I have a django model as follows: class Order(models.Model): cash=models.DecimalField(max_digits=11,decimal_places=2,default=0) balance=models.DecimalField(max_digits=11,decimal_places=2,default=0) current_ac=models.DecimalField(max_digits=11,decimal_places=2,default=0) added_by = models.ForeignKey(User) There can be multiple Orders and multiple users can create orders. How can I get the sum of all orders for each columns for a particular user, something like ord=Order.objects.filter(added_by.id=1).sum() -
django shows 500 error instead of 403 error
I was trying to write custom error pages and got this issue, when a user is not authenticated and tries to visit a specific webpage I returned PermissionDenied() handler to show a 403(expected by me) but, django shows a 500 error instead. How do I show a 403 error in this case? My urls.py: handler404 = 'error.views.error_404' handler403 = 'error.views.error_403' handler500 = 'error.views.error_500' handler400 = 'error.views.error_400' My views.py to authenticate the user: if request.user.is_authenticated(): return render(request,"app/index.html") else: return PermissionDenied() My views.py used to handle exceptions: def error_404(request, exception): data = {} return render(request,'error/404.html', data) def error_403(request, exception): data = {} return render(request,'error/403.html', data) def error_500(request): data = {} return render(request,'error/500.html', data) def error_400(request, exception): data = {} return render(request,'error/400.html', data) Reference Used: How do I raise a Response Forbidden in django -
Django cannot create or save comments
I cannot Save comments in django my post model is #model.py class Post(models.Model): thumbnail = models.ImageField() slug = models.SlugField(null=True) title = models.CharField(max_length=200) description = models.TextField() content = HTMLField(null=True) categories = models.ManyToManyField(Category) featured = models.BooleanField() timeStamp = models.DateTimeField(auto_now_add=True) commentCount = models.IntegerField(default=0) viewCount = models.IntegerField(default=0) def __str__(self): return self.title def absoluteUrl(self): return reverse('postContent', kwargs={ 'slug' : self.slug }) @property def getComments(self): return self.comments.all() my comment model is #model.py class Comment(models.Model): name = models.CharField(max_length=25) timeStamp = models.DateTimeField(auto_now_add=True) comment = models.TextField() post = models.ForeignKey(Post, related_name='comments', on_delete=models.CASCADE) def __str__(self): return self.name my forms.py is from .models import Post, Comment class CommentForm(forms.ModelForm): name = forms.CharField(widget=forms.TextInput(attrs={ 'class': 'form-control', 'id' : 'name', 'placeholder': 'Name' })) comment = forms.CharField(widget=forms.Textarea(attrs={ 'class' : 'form-control w-100', 'id' : 'comment', 'cols' : '30', 'rows' : 9, 'placeholder' : 'Write Comment' })) class Meta: model = Comment fields = ('name', 'comment') my view.py is from .forms import CommentForm def post(request, slug): categoryCount = getCategoryCount() featured = Post.objects.filter(featured=True) post = get_object_or_404(Post, slug=slug) if request.method == 'POST': form = CommentForm(request.POST) if form.is_valid(): form.instance.post = post form.save() else: form = CommentForm() context = { 'post' : post, 'featured': featured, 'categoryCount': categoryCount, 'form' : form } return render(request, 'post.html', context) my post.html is <div class="comment-form"> <h4>Leave a Reply</h4> … -
Django Rest Auth - UID invalid value error
I have a DRF server, and I've been trying to send a password reset email, using the PasswordResetForm. I receive an email as expected, though when trying to send a reset the password, I receive: { "uid": [ "Invalid value" ] } After some investigation, I've found that in Django's PasswordResetConfirmSerializer's file, there is a conditional import which is responsible for the issue - I'm using allauth and so it imports the wrong uid_decoder module (it works using the other module): # this imports the wrong uid_decoder if 'allauth' in settings.INSTALLED_APPS: from allauth.account.forms import default_token_generator from allauth.account.utils import url_str_to_user_pk as uid_decoder else: from django.contrib.auth.tokens import default_token_generator from django.utils.http import urlsafe_base64_decode as uid_decoder Is there a better way to handle the issue than editing the dj_rest_auth file? Thanks! Email send code, if needed: from django.conf import settings from django.contrib.auth.forms import PasswordResetForm def send_user_invite(email): # send invitation to reset password & join the platform form_options = { "use_https": True, "from_email": getattr(settings, "DEFAULT_FROM_EMAIL"), # "request": request, "subject_template_name": "registration/password_reset_subject.txt", "email_template_name": "users/invite_with_password_reset.html", "extra_email_context": {"reset_base_url": settings.RESET_BASE_URL}, } form = PasswordResetForm(data={"email": email}) if form.is_valid(): form.save(**form_options) -
run two celery task
i use celery in django , i add a task to my project and get error, but before add this task my project is work good. # app_account.celery_task.py my first task is : @shared_task def send_birthday_email(): users = User.objects.filter(is_active=True, date_of_birth__isnull=False, email__isnull=False) time = datetime.today() for user in users: if user.date_of_birth.day == time.day and user.date_of_birth.month == time.month: send_mail( f'happy birthday', f'Happy birthday, dear {user.name}, have a good year', 'local@host.com', [user.email], ) my new task : @shared_task def send_password_reset_mail(mail_info): send_mail( subject=mail_info['subject'], message=mail_info['message'], from_email=mail_info['from_email'], recipient_list=mail_info['recipient_list'], ) second task use in this signal: # this signal for send email reset password @receiver(reset_password_token_created) def password_reset_token_created(sender, instance, reset_password_token, *args, **kwargs): email_plaintext_message = f"your token is = {reset_password_token.key}" mail_info = { 'subject': 'Password Reset', 'message': email_plaintext_message, 'from_email': 'noreply@host.com', 'recipient_list': [reset_password_token.user.email], } send_password_reset_mail.delay(mail_info) now , when i run by python manage.py runserver get this error File "/usr/lib/python3.8/importlib/__init__.py", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 1014, in _gcd_import File "<frozen importlib._bootstrap>", line 991, in _find_and_load File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 671, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 783, in exec_module File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed File "/home/rahmanipy/Desktop/DrfBlog/venv/lib/python3.8/site-packages/django_rest_passwordreset/models.py", line 121, in <module> UserModel = get_user_model() File "/home/rahmanipy/Desktop/DrfBlog/venv/lib/python3.8/site-packages/django/contrib/auth/__init__.py", … -
Forcibly Reload View in Django
I have this view here: def racedata_json(request): data = list(RaceData.objects.values()) return JsonResponse({'racedata': data}) This view only returns a JSON string. The problem is that this view doesn't reload automatically. My frontend is running on React and doesn't update real-time accordingly with the database. What happens is that I have real-time data in my database but I must manually go onto the browser and refresh racedata_json's URL for it to update its content. I have an automated task running on huey, in case this will help the view automatically refresh: @periodic_task(crontab(minute='*/15')) def record_racedata(): team = nitrotype.Team('PR2W') team_id = team.data["info"]["teamID"] timestamp = datetime.now().timestamp() # ... The code above will automatically execute every fifteen minutes, and that's where the real-time data in the database comes from. Thanks in advance. -
while reloading the page it is asking to resubmit the previous action please suggest me how to use redirect in this piece of code
while reloading the page it is asking to resubmit the previous action please suggest me how to use redirect in this piece of code. def post_detail_view(request, year, month, day, post): post = get_object_or_404(Post, slug = post, status= 'published', publish__year = year, publish__month=month, publish__day = day) print(post, 'this is post') comments = post.comments.filter(active = True) print(comments,'comments') csubmit = False if request.method == 'POST': form = CommentForm(request.POST) print(form , 'form') if form.is_valid(): new_comment = form.save(commit = False) new_comment.post = post new_comment.save() csubmit = True else: form = CommentForm() my_dict = {'post': post, 'form': form, 'csubmit': csubmit, 'comments':comments} return render(request = request, template_name = 'blogapp/post_detail.html', context= my_dict) -
ValueError at /like/ Field 'id' expected a number but got ''
I have a like button that worked fine before and now has stopped working <button class="btn btn-info" id="{{ post.id }}"> {% if post in liked_post %} <a href="{% url 'post-like' %}" style="color: white" id="likebtn{{ post.id }}" > Unlike</a > | {{post.likes.count}} {% else %} <a href="{% url 'post-like' %}" style="color: white" id="likebtn{{ post.id }}" > Like</a > | {{post.likes.count}} {% endif %} </button> urls.py: path('post/<int:pk>/', post_detail, name='post-detail'), When I click the like button I get the error: ValueError at /like/ Field 'id' expected a number but got ''. -
cannot deactivate venv using 'conda deactivate' or 'deactivate' command
I've tried all these options but can't deactivate the virtual environment. (venv) C:\Users\dell\PycharmProjects\WeatherApp>deactivate DeprecationWarning: 'deactivate' is deprecated. Use 'conda deactivate'. (venv) C:\Users\dell\PycharmProjects\WeatherApp>conda.bat deactivate (venv) C:\Users\dell\PycharmProjects\WeatherApp>conda deactivate venv deactivate does not accept arguments remainder_args: ['venv'] (venv) C:\Users\dell\PycharmProjects\WeatherApp>conda deactivate (venv) C:\Users\dell\PycharmProjects\WeatherApp> -
how to django link url to decoupled react app
I have built my app with django as the backend and react as the frontend. I want to keep the two decoupled. However, I have an use case where I want to link from django to my react app. The frontend and backend will be hosted on different domains. While sending a password reset email, I need to link to a react page. The url is localhost:3000/reset/{code_here}/ I need to include this URL in an email (from the backend). I am not sure of what the best way to do this is. Should I hardcode the URL into my emails? Or is there any better way to achieve this? -
Auto logout specific users in Django
I know that we can implement auto logout with SESSION_COOKIE_AGE variable, but this method apply to all users. My question is: What is the best practice for implement auto logout system for specific users such as admin's or super admin's? -
Cannot execute runserver in Django VScode
I am using VScode to learn Django. I initially set up a virtual environment with Python 3.9. When I type python in Mac's terminal. It displays "python3.9" without any issue. However, when I type the same command in the terminal embeded in VScode. It shows python2.7 as below. Is it a problem of VScode or the settings? I am learning Django right now and when I run the command: python manage.py runserver It shows the error as below. I doubt that two issues were related, but cannot resolve it. Could anyone help me out? Tons of thanks. File "manage.py", line 16 ) from exc ^ SyntaxError: invalid syntax