django channels consumers

[Vahid Asadi]

Hi there.  
i want to send a message though WebSocket protocol after a user 
disconnected from the channel. the consumer codes is located on this link. 
https://paste.ubuntu.com/p/GND7tqVB6q/
the main function that sends a message to the group after a user 
disconnected is `chat_leave` function.
the problem here is this function could not called at all. what wrong with 
the code?
thanks for your attention 

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confusing about running some codes in django

[Vahid Asadi]

Hi . 
when i read the django docs,it suggested that running some code but it does 
not note that where to write this piece of code . the code is :

from django.contrib.auth.models import User

u = User.objects.get(username='john')

u.set_password('new password')

u.save()


i know that i can run it in django shell (manage.py shell)

but i want to write these in a file(its some confusing that every code in 
views.py should return a http response but this type of commands does not 
return any respone) 

where should i put this code ??

thanks for your attention.

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Re: confusing about running some codes in django

[Vahid Asadi]

Thanks

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Re: confusing about running some codes in django

[Vahid Asadi]

But when I put this code in model.py, when I run the server it returns an
error about constraints failed but the user was added in Django admin
users. Why this happen??
On Aug 29, 2019 5:54 PM, "Mario R. Osorio"  wrote:

> That code is meant for you to type it in the python console however, you
> could also include it pretty much anywhere in your code.
>
>
> On Wednesday, August 28, 2019 at 9:15:20 AM UTC-4, Vahid Asadi wrote:
>>
>> Hi .
>> when i read the django docs,it suggested that running some code but it
>> does not note that where to write this piece of code . the code is :
>>
>> from django.contrib.auth.models import User
>>
>> u = User.objects.get(username='john')
>>
>> u.set_password('new password')
>>
>> u.save()
>>
>>
>> i know that i can run it in django shell (manage.py shell)
>>
>> but i want to write these in a file(its some confusing that every code in 
>> views.py should return a http response but this type of commands does not 
>> return any respone)
>>
>> where should i put this code ??
>>
>> thanks for your attention.
>>
>> --
> 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.
> To view this discussion on the web visit https://groups.google.com/d/
> msgid/django-users/b6b3b24e-b34e-42e6-b637-3e6a30ca2823%40googlegroups.com
> <https://groups.google.com/d/msgid/django-users/b6b3b24e-b34e-42e6-b637-3e6a30ca2823%40googlegroups.com?utm_medium=email&utm_source=footer>
> .
>

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UNIQUE constraint failed on adding a new model field

[Vahid Asadi]

HI . when i want to add a new field called "slug" to my "Post" model, the 
migrate command will raise UNIQUE constraint failed: new__chat_post.slug

after that i remove that field from my model but the problem still exists. 
why?? and how to resolve this problem without deleting my whole table 
datas. thanks ..

the model:


class Post(models.Model):
title = models.TextField(max_length=100)
context = models.TextField(max_length=255)
creation_date  = models.DateTimeField(default = timezone.now)
author = models.ForeignKey(settings.AUTH_USER_MODEL,on_delete = models.
CASCADE)
slug = models.SlugField(default=["title"],unique=True)

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