Re: Channels: rejecting web socket connections with a custom close code

[Andrew Godwin]

Hi Matt,

This is because the two ways of closing are different - closing before the
socket is open sends a HTTP error code (what browsers report for this is
different in terms of websocket errors), whereas closing once it is open
allows a websocket error to be used.

This is referenced in the spec at
https://asgi.readthedocs.io/en/latest/specs/www.html#websocket but somewhat
obliquely; I’ll try to make it a bit clearer.

Andrew

On Wed, 3 Oct 2018 at 13:23, Matt F  wrote:

> Hello all,
>
> I have a question about the process of accepting/rejecting web socket
> connections in Channels consumers (v2.1.3).  I have found that if I have
> code like this:
>
> class MyConsumer(JsonWebsocketConsumer):
> def connect(self):
> if authenticated:
> self.accept()
> else:
> self.close(4001)
>
>
> then when rejecting a connection the close code always comes through on
> the client side as 1006 (abnormal closure) instead of 4001.  There is a
> stack overflow post about the same issue that led me to an answer that
> solves this:
> https://stackoverflow.com/questions/50009440/django-channels-2-0-websocketbridge-js-403-when-self-codecode-1007
>
> And a code snippet that works correctly is as follows:
>
> class MyConsumer(JsonWebsocketConsumer):
> def connect(self):
> self.accept()
> if not authenticated:
> self.close(4001)
>
>
> The Channels documentation is ambiguous as to which of these is correct.
> Now I think I know the answer as the first way breaks and the second way
> works, but I wanted to check with someone more knowledgeable that this way
> of doing things is by design and not just working by accident.  It feels a
> bit wrong to accept a connection and then immediately close it, but I
> understand if you have to do it this way, to get the custom close code
> returned perhaps you have to have an open connection in the first place.
> Can someone please confirm?
>
> Many thanks!
> Matt
>
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While registering the user with django form, it gives "UNIQUE constraint failed: auth_user.username" error

[Jaydeep Borkar]

When I try to register a user using Django form, it gives me "UNIQUE 
constraint failed: auth_user.username". When I tried registering the first 
user, it worked, but I couldn't see that entry in my database. When I tried 
registering the second user, it's giving me this error. Please, help me 
through this. I have spent a considerable amount of time on this and I'm 
stuck. 

This is my code: 

forms.py 
from django import forms
from django.contrib.auth.models import User
from volunteer.models import UserProfileInfo

class UserForm(forms.ModelForm):

class Meta():
model = User
fields = ('email','first_name','last_name')




views.py 
from django.shortcuts import render
from volunteer.forms import UserForm

 

def register(request):

registered = False

if request.method =="POST" :
user_form = UserForm(data=request.POST)

if user_form.is_valid():

user = user_form.save()
user.save()

registered = True

else:
print(user_form.errors)

else:
user_form = UserForm()

return render(request, 'volunteer/volunteer.html',
 {'user_form':user_form,
  'registered':registered})

 
  






models.py 
from django.db import models
from django.contrib.auth.models import User

class UserProfileInfo(models.Model):

user=models.OneToOneField(User)

def __str__(self):
return self.user.first_name
return self.user.last_name
return self.user.email







urls.py
from django.conf.urls import url

from . import views

app_name = 'volunteer'

urlpatterns = [

 url(r'^', views.register, name='register'),
]



admin.py
from django.contrib import admin
from volunteer.models import UserProfileInfo

# Register your models here.
admin.site.register(UserProfileInfo)



volunteer.html file which has the user form




 
 


 
https://maxcdn.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css";>
https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js";>
https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js";>
 https://maxcdn.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js";>
 
  
 
  

 
{% if registered %}
   Thanks!
{% else %}
  Register


 
{% csrf_token %}
{{ user_form.as_p }}
 

 {% endif %}

  

 
 


 



I feel there's some problem in views.py or models.py, or volunteer.html. or 
maybe something else. Please, guide me through this. 
Thanks in advance. 

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Re: Channels: rejecting web socket connections with a custom close code

[replyveer25]

hello someone help me i am getting django 404 error ..how fix it ...please 
help me i am so frustrated


On Wednesday, 3 October 2018 04:23:30 UTC-7, Matt F wrote:
>
> Hello all,
>
> I have a question about the process of accepting/rejecting web socket 
> connections in Channels consumers (v2.1.3).  I have found that if I have 
> code like this:
>
> class MyConsumer(JsonWebsocketConsumer):
> def connect(self):
> if authenticated:
> self.accept()
> else:
> self.close(4001)
>
>
> then when rejecting a connection the close code always comes through on 
> the client side as 1006 (abnormal closure) instead of 4001.  There is a 
> stack overflow post about the same issue that led me to an answer that 
> solves this: 
> https://stackoverflow.com/questions/50009440/django-channels-2-0-websocketbridge-js-403-when-self-codecode-1007
>
> And a code snippet that works correctly is as follows:
>
> class MyConsumer(JsonWebsocketConsumer):
> def connect(self):
> self.accept()
> if not authenticated:
> self.close(4001)
>
>
> The Channels documentation is ambiguous as to which of these is correct.  
> Now I think I know the answer as the first way breaks and the second way 
> works, but I wanted to check with someone more knowledgeable that this way 
> of doing things is by design and not just working by accident.  It feels a 
> bit wrong to accept a connection and then immediately close it, but I 
> understand if you have to do it this way, to get the custom close code 
> returned perhaps you have to have an open connection in the first place.  
> Can someone please confirm?
>
> Many thanks!
> Matt
>
>

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geodjango raster field get pixel value

[Majid Hojati]

Hi,
Is there any function to get raster value under a point using geodjango?or 
we must perform a raw query?

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Re: geodjango raster field get pixel value

[Pradeep Singh]

i don't know,  i hava a problem can you solve this .

On Sat, 6 Oct 2018 at 10:09, Majid Hojati  wrote:

> [image: Boxbe]  This message is eligible
> for Automatic Cleanup! (asd5...@gmail.com) Add cleanup rule
> 
> | More info
> 
> Hi,
> Is there any function to get raster value under a point using geodjango?or
> we must perform a raw query?
>
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> 
> .
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>

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Re: geodjango raster field get pixel value

[Pradeep Singh]

when i  sendind request  always m getting django 404 error can you help me
..nd please tell me how to fix it

On Sat, 6 Oct 2018 at 10:42, Pradeep Singh  wrote:

> i don't know,  i hava a problem can you solve this .
>
> On Sat, 6 Oct 2018 at 10:09, Majid Hojati  wrote:
>
>> [image: Boxbe]  This message is eligible
>> for Automatic Cleanup! (asd5...@gmail.com) Add cleanup rule
>> 
>> | More info
>> 
>> Hi,
>> Is there any function to get raster value under a point using
>> geodjango?or we must perform a raw query?
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "Django users" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to django-users+unsubscr...@googlegroups.com.
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>> Visit this group at https://groups.google.com/group/django-users.
>> To view this discussion on the web visit
>> https://groups.google.com/d/msgid/django-users/63334e6f-2ac5-434f-8041-6e4bea64e33c%40googlegroups.com
>> 
>> .
>> For more options, visit https://groups.google.com/d/optout.
>>
>

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I put 3 more fields on database models

[Bleron Uka]

Hi, 
My database has data there and i add 3 more inputs and i am having this 
error ?!

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Re: I put 3 more fields on database models

[Manjunath]

Seems like you have not performed migrations after adding the new fields.

execute these commands & then run your server.

python manage.py makemigrations

python manage.py migrate

 


On Sunday, October 7, 2018 at 3:33:54 AM UTC+5:30, Bleron Uka wrote:
>
> Hi, 
> My database has data there and i add 3 more inputs and i am having this 
> error ?!
>

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Re: I put 3 more fields on database models

[daniel main]

Hello. Try and make the migrations then migrate. I hope that helps

On Oct 7, 2018 01:03, "Bleron Uka"  wrote:

Hi,
My database has data there and i add 3 more inputs and i am having this
error ?!

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.
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RE: I put 3 more fields on database models

[Deepak Kumar jha]

After adding fields in model you have to do 
1:python manage.py makemigrations (app_name)
2: Python manage.py migrate

Sent from my Windows 10 phone

From: Bleron Uka
Sent: 07 October 2018 03:33 AM
To: Django users
Subject: I put 3 more fields on database models

Hi, 
My database has data there and i add 3 more inputs and i am having this error ?!
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