if multiple users logs in and query for something at the same time, then how can i recognize which user queried for which thing.
i tried to make a group chat system. the idea is just to make a wall on which all users will post but the problem is how can i know which user requested to post if there r multiple users at same time.
my views.py-
def login(request):
if request.method == 'POST':
post = request.POST
u = user.objects.get(username = post['username'])
if post['password'] == u.password:
request.session['username'] = u.username
return redirect('wall')
else:
return render(request, 'wall/login_page.html')
def wall(request):
if request.method == 'POST':
post = request.POST
if 'logout' in post:
del request.session['username']
return redirect('home')
elif 'post' in post:
posted_by = request.session.get('username', '')
post_content = post['post_text']
post_id = posted_by+''+datetime.datetime.now().strftime("%I:%M%p on %B %d, %Y")
p = user_post(posted_by = posted_by, post_content = post_content, post_id = post_id)
p.save()
return redirect('wall')
else:
if 'username' in request.session:
posts = user_post.objects.all()
return render(request, 'wall/wall_page.html', {'posts': posts})
else:
return redirect('error')
thanks in advance
request has a user attribute that indicates which user made the request (which may be the AnonymousUser if you don't require logins).
Related
Could you please helpe me debugging this test? I got this error (I don't know whay since, I
have no pk in view): django.contrib.auth.models.User.DoesNotExist: User matching query does not exist.I think the error is due to pk=request.user.id passed as argument in User objects in the view function.
class TestViews(TestCase):
def setUp(self):
self.client = Client()
self.create_campaign_naming_tool_url = reverse('create_campaign_naming_tool')
self.user = User.objects.create_user(
username = 'admin',
email = 'admin#sigma.fr',
password = '1234'
)
def test_create_campaign_naming_tool(self):
response = self.client.get(self.create_campaign_naming_tool_url)
self.assertEqual(response.status_code, 200)
self.assertTemplateUsed(response, 'form.html')
Here is my view
def create_campaign_naming_tool(request):
current_user = User.objects.get(pk=request.user.id)
form = CampaignNamingToolForm(initial={'user': current_user})
context = {
'form': form,
}
if request.method == 'POST':
campaign = CampaignNamingTool(user=current_user)
form = CampaignNamingToolForm(request.POST, instance=campaign)
if form.is_valid():
form.save()
messages.success(request, "Your campaign haven ben\
success fully created.")
return render(request, 'form.html', context)
return render(request, 'form.html', context)
You did not login the user in the test:
class TestViews(TestCase):
def setUp(self):
self.client = Client()
self.create_campaign_naming_tool_url = reverse('create_campaign_naming_tool')
self.user = User.objects.create_user(
username = 'admin',
email = 'admin#sigma.fr',
password = '1234'
)
self.client.login(username='admin', password='1234')
# …
It also makes no sense to do such query to fetch the user: request.user is a User object, so you can work directly with this:
from django.contrib.auth.decorators import login_required
from django.shortcuts import redirect
#login_required
def create_campaign_naming_tool(request):
form = CampaignNamingToolForm(initial={'user': request.user})
if request.method == 'POST':
campaign = CampaignNamingTool(user=request.user)
form = CampaignNamingToolForm(request.POST, instance=campaign)
if form.is_valid():
form.save()
messages.success(request, 'Your campaign has been successfully created.')
return redirect('name-of-some-view')
context = {
'form': form,
}
return render(request, 'form.html', context)
Note: You can limit views to a view to authenticated users with the
#login_required decorator [Django-doc].
Note: In case of a successful POST request, you should make a redirect
[Django-doc]
to implement the Post/Redirect/Get pattern [wiki].
This avoids that you make the same POST request when the user refreshes the
browser.
I want to display data taken from my Django models in my html file. So in the code bellow instead of a 0 I want the donation model data. Can someone please help? Thank you! also if anyone knows a easier way please tell me. i can update my question again if anyone needs more details.
Views.py
from django.forms import ModelForm
# Create your views here.
def index(request,*args, **kwargs):
return render(request, "index.html", {} )
#login_required(login_url='/login/')
def myview(request,id):
data= userdetails.objects.get(id=id)
return render(request,'dashboard.html',{'data':data}
def register(request ):
if request.user.is_authenticated:
return redirect('/dashboard/')
else:
form = CreateUserForm()
if request.method == "POST":
form = CreateUserForm(request.POST)
if form.is_valid():
form.save()
username = form.cleaned_data.get('username')
messages.success(request, f'Your account has been successfully created, {username} ')
return redirect('loginpage')
context = {'form': form}
return render(request, "register.html", context )
def loginpage(request):
if request.user.is_authenticated:
return redirect('/dashboard/')
else:
if request.method == 'POST':
username = request.POST.get('username')
password =request.POST.get('password')
user = authenticate(request, username=username, password=password)
if user is not None:
login(request, user)
return redirect('/dashboard')
else:
messages.error(request, 'Username OR password is incorrect')
context = {}
return render(request, 'login.html', context)
def logoutuser(request):
logout(request)
return HttpResponseRedirect('/login/')
#login_required(login_url='/login/')
def donate(request):
if request.method == "POST":
title = request.POST['donationtitle']
phonenumber = request.POST['phonenumber']
category = request.POST['category']
quantity = request.POST['quantity']
location = request.POST['location']
description = request.POST['description']
ins = Donation(title = title, phonenumber = phonenumber, category = category, quantity = quantity, location = location, description = description, user=request.user, )
ins.save()
return render(request,'donate.html')
Error:
File "C:\Users\jbtai\coding\GoodDeedWeb\home\views.py", line 30
def register(request ):
^
You need a view that handle that:
def myview(request):
id = request.user.id
data= userderails.objects.get(id=id)
return render(request,'dashboard.html',{'data':data}
Then in your template 'dashboard.html' you could show details:
{{data.donations}}
{{data.points}}
use this url for that view instead of the old one
path('dashboard/',views.myview, name = 'dashboard' ),
I have a problem with passing object between views and forms and back.
On first form i check token (GET) with email - if it's ok - you can go further. If not - go away :D
views.py:
def login(request):
try:
token = request.GET['token']
except:
return render(request,'error.html')
if request.method == 'POST':
form = LoginForm(request.POST)
if form.is_valid():
return HttpResponseRedirect('/vote/')
else:
form = LoginForm(initial={'token': request.GET['token']})
return render(request,'login.html', context = {'form':form})
forms.py:
class LoginForm(forms.Form):
email = forms.EmailField(label='Email', max_length=254,widget=forms.TextInput(attrs={'class':'required'}))
token = forms.CharField(widget=forms.HiddenInput())
def clean(self):
cleaned_data = super().clean()
try:
voter = Person.objects.get(email__iexact=cleaned_data['email'],token__exact=cleaned_data['token'])
except Person.DoesNotExist:
raise ValidationError('Invalid email')
It works.
But now i try to go to voting form.
And I want to use voter object (which is set in LoginForm). Of course this is different form, so I have to pass it. I thought about session, but there's no request.session in form. This is in view, but there's no voter... or is it?
As always when I'm stuck for many minutes, I wrote the question and after few minutes I got excellent solution, so I want to share it with you:
I moved checking into view and use form.add_error. And I don't need token hidden field anymore:
forms.py:
class LoginForm(forms.Form):
email = forms.EmailField(label='Email', max_length=254,widget=forms.TextInput(attrs={'class':'required'}))
views.py:
def login(request):
try:
token = request.GET['token']
except:
return render(request,'error.html')
if request.method == 'POST':
form = LoginForm(request.POST)
if form.is_valid():
try:
voter = Person.objects.get(email__iexact=form.cleaned_data['email'],token__exact=token)
return HttpResponseRedirect('/vote/')
except Person.DoesNotExist:
form.add_error('email','Invalid email')
else:
form = LoginForm()
return render(request,'login.html', context = {'form':form})
And now I can pass voter into next form using request, session, whatever :D
class Profile(View):
"""User Profile page reachable from /user/<username> URL"""
def get(self, request, username):
params = dict()
user = User.objects.get(username=username)
tweets = Tweet.objects.filter(user=user)
params["tweets"] = tweets
params["user"] = user
return render(request, 'profile.html', params)
class PostTweet(View):
"""Tweet Post form available on page /user/<username> URL"""
def post(self, request, username):
form = TweetForm(self.request.POST)
if request.method == 'POST':
if form.is_valid():
user = User.objects.get(username=username)
tweet = TweetForm(text=form.cleaned_data['text'],
user=user,
country=form.cleaned_data['country'])
tweet.save()
words = form.cleaned_data['text'].split(" ")
for word in words:
if word[0] == "#":
hashtag,created=HashTag.objects.get_or_create(name=word[1])
hashtag.tweet.add(tweet)
return HttpResponseRedirect('/user/'+user)
else:
form = TweetForm()
return render(request, 'profile.html',{'form':form})
You must make both methods in a single view class.
So on get user gets empty form, and on post form gets processed.
def group_display(request, group_id):
groups = Groups.objects.get(id=group_id)
username = UserInfo.objects.get(owner = request.user)
form = membership_form()
template = 'groups.html'
if request.method == 'POST':
form = membership_form(request.POST)
if form.is_valid():
post = form.save(commit=False)
post.name = username
post.group = groups
post.save()
context = {
'form':form,
}
return render(request, template, context)
The problem is that every time I reload page a new row is added to membership model. Seems like the page is loads as request.POST. is there any way i can insert the data only on button click?
After a successful POST request, it is best to return a redirect. This prevents the post request from being processed again if the page is refreshed. You can redirect to the current url if you want.
from django.shortcuts import redirect
def group_display(request, group_id):
...
if request.method == 'POST':
form = membership_form(request.POST)
if form.is_valid():
post = form.save(commit=False)
post.name = username
post.group = groups
post.save()
return redirect('/success-url/')
...
There are two things you can do:
Redirect after a successful POST.
Check to make sure there isn't a registration for that user.
Here is a view that takes care of both:
from django.shortcuts import get_object_or_404, redirect
def group_display(request, group_id):
groups = get_object_or_404(Groups, id=group_id)
username = get_object_or_404(UserInfo, owner=request.user)
if username.membership_set.exists():
# This user is already enrolled
return redirect('/')
form = membership_form(request.POST or {})
template = 'groups.html'
context = {'form': form}
if form.is_valid():
post = form.save(commit=False)
post.name = username
post.group = groups
post.save()
return redirect('/')
return render(request, template, context)
You'll have to adjust username.membership_set.exists based on your own models.