what do u expect ? you need to filter by grade so despite the count, you need to hit again the db

what do u expect ? you need to filter by grade so despite the count, you need to hit again the db

i already have the data when i call and use units = UnitModel.objects.all().select_related('subject', 'subject__language', 'subject__language__region') why would i want to hit again ?

i already have the data when i call and use units = UnitModel.objects.all().select_related('subject', 'subject__language', 'subject__language__region') why would i want to hit again ?

you can count in this query

but if u need units and not a count of them, you can just use the len(...)

what do u expect ? you need to filter by grade so despite the count, you need to hit again the db

ya the problem arise when i use filter + count lesson_count = units.filter(subject__grade=grade).count() this query hits db i saw in the debug toolbar

did you run makemigrations?

Yeah I made makemigrations it worked but while migrate it showing that

Follow Prettyprintef on YouTube..its simple

Okay let me check thanks

ya the problem arise when i use filter + count lesson_count = units.filter(subject__grade=grade).count() this query hits db i saw in the debug toolbar

thinking about performances at first is the source of evil if you don't have duplicated queries, use the code that works

when you are in the scenario where the app is slow due to those particular queries then you can apply some strategies and refactor

How can i solve this problem about Serialization. Can anyone give me a hint? https://stackoverflow.com/questions/64308926/display-serialized-objects-in-my-template-in-django

How can i solve this problem about Serialization. Can anyone give me a hint? https://stackoverflow.com/questions/64308926/display-serialized-objects-in-my-template-in-django

Instead of handling it into the template file, use javascript to make the call to that view

Instead of handling it into the template file, use javascript to make the call to that view

would you please give me an example.

would you please give me an example.

there are lots of them on internet just look for django javascript fetch api

when you are in the scenario where the app is slow due to those particular queries then you can apply some strategies and refactor

I am this situation

I am this situation

how much slow ?

debug toolbar is part of the slowness

debug toolbar is part of the slowness

I hope people disable debug-toolbar for production...

how much slow ?

Not much but it is good if I optimized I mean I am seeing opportunity for that like filtering with out db hit

I hope people disable debug-toolbar for production...

Yep like If settings.DEBUG: ....

I hope people disable debug-toolbar for production...

hope too 😂

Not much but it is good if I optimized I mean I am seeing opportunity for that like filtering with out db hit

profile, not too much, too much are not answers profile, analyze numbers and then you can refactor

Guys for each api there is a token or for the whole project a single token?

Guys for each api there is a token or for the whole project a single token?

depends on how you did/want to do things 🤷🏻‍♂️ but I don't see practical to have a different token for each endpoint

profile, not too much, too much are not answers profile, analyze numbers and then you can refactor

🙏 thanks

depends on how you did/want to do things 🤷🏻‍♂️ but I don't see practical to have a different token for each endpoint

thank u

I want to change ID of button in template dynamic and get that id in Javascript by using getElementById() so how can I do that? Could someone plz help me?

Dynamically*

I want to change ID of button in template dynamic and get that id in Javascript by using getElementById() so how can I do that? Could someone plz help me?

Explain more..from where that id is coming.. what do you mean by id.. PK or html attribute?

I took forloop and i want forloop.counter as my html id attribute and this also be change in JS

eg id="myId{{forloop.counter}}" and as per this it has to take document.getElementById("myId1").value (depends on counter)

I took forloop and i want forloop.counter as my html id attribute and this also be change in JS

Im not sure..but you can try a hidden field and capture its data..

Hey everyone i am making a social media application and Its actually like a video code along type of project can anyone explain me this paragraph that why did he use *args and kwargs and what is the use of super in this function actually the video uploader is trying to make a unique slug for all his users Def save(self,*args,kwargs): #code to make a unique slug Super().save(*args,**kwargs)

Hey everyone i am making a social media application and Its actually like a video code along type of project can anyone explain me this paragraph that why did he use *args and kwargs and what is the use of super in this function actually the video uploader is trying to make a unique slug for all his users Def save(self,*args,kwargs): #code to make a unique slug Super().save(*args,**kwargs)

If you familiar with the concetps of args, kwargs and super then I would suggest you to open the django source code to look under the hood for the base save function of whatever class you are overriding. If thats not the case then you should first make yourself comfortable with concept behind args, kwargs and super.

I am sending mails using SMTP library in python. Is there a way to check if the email was sent in turn checking that the email id exists?

Anyone connect flutter frontend with django backend??

Anyone connect flutter frontend with django backend??

Just fetch APIs with js

Sorry @Django_admin can I post a poll

Sorry @Django_admin can I post a poll

No

Hello group, I am trying to install pyreportjasper to process JasperReports templates (.jasper files) from django, but it fails trying to install the "jpy" dependency. Has anyone any experience on this? Is there another alternative to pyreportjasper for processing JasperReports templates?

Just fetch APIs with js

it is ok It works finally

How can i write custom midlleware on o e route And dont run for all of my rout

I am sending mails using SMTP library in python. Is there a way to check if the email was sent in turn checking that the email id exists?

You need to hit that email ... I forgot the library name but yes it's possible

Can we trigger a post or get request of a form after selecting a value from drop down list from from the templates file?

I think you can convert those to html links in form tags and then you can hit your url

How i check if username already exists in database ?

Accounts.objects.filter(email=email).exists()

how to pass a model object from one view function to another view function?

Hello, i have a problem. i have a project with 2 apps core (where i define models) and api where i have DRF files (serializers and views).the problem im facing is, when i try to deploy the project (or do a clean install, deleting the DB) it will throw an error at this line in api/serializers.py class DummySerializer(serializers.Serializer): dummy_id = serializers.ChoiceField(choices=[x.id for x in Dummy.objects.all()]) Saying django.db.utils.OperationalError: no such column: core_Dummy.field_id. Why is it taking in consideration seralizer's code while doing migrations? obviously that field does not exists. i need that field to make migrations and creaate that field (?)

Accounts.objects.filter(email=email).exists()

Already done bro

What's the error

Already done bro

What's the error

Nothing

What is the value of abive statement being returned

What is the value of abive statement being returned

What are you talking about?

Accounts.filter what's the value he's getting

Accounts.filter what's the value he's getting

Why do you want to know that?

If he's not getting anything he must be getting something buddy ... User.objects.get(username=username)

You can try this rahul

If he's not getting anything he must be getting something buddy ... User.objects.get(username=username)

Why? Seriously... Why? 🤔

Have u worked on django or ever debugged it

Have u worked on django or ever debugged it

Yes

So do u know how we check stuff when we r stuck or not

So do u know how we check stuff when we r stuck or not

Yes I know, but you don't know

Seriously .. so this means when u r stuck with a particular value u Just don't check values in models or data in them

Seriously .. so this means when u r stuck with a particular value u Just don't check values in models or data in them

What are you talking about?

I got it... You haven't worked on live projects then... Carry on buddy...

I got it... You haven't worked on live projects then... Carry on buddy...

🆗 Ok

How to store dictionary / list in django session... Till now it gives json serialisation error....please anyone has any tricks let me know

How to store dictionary / list in django session... Till now it gives json serialisation error....please anyone has any tricks let me know

Try converting it into string

Try converting it into string

Then it cannot be accessed key wise

🤔🤔 in request.session[] ?

I made a project in virtual environment in Python 3.9 But uninstalled it and installed 3.7 . So I am not able to get the setting . Can anyone help?

Then it cannot be accessed key wise

While accessing, try... eval(dict_variable)

While accessing, try... eval(dict_variable)

Ohhk I'll try and let you know

Follow Prettyprintef on YouTube..its simple

I went through it worked too, thanks

but

but unable to login in admin,migrate is not working https://dpaste.org/DLdE

https://dpaste.org/6HFt

Hello , two employees having same manager.. which relation will be there manytomany or foreignkey

https://dpaste.org/6HFt

Delete migrations + db Remigrate and upload it on heroku..

okay

Hello , two employees having same manager.. which relation will be there manytomany or foreignkey

Can you please elaborate a bit.