Add Blog Categories - Django Blog #12

[@Codemycom]

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[@juanbilly1364]

i know it's kinda off topic but do anyone know of a good website to stream newly released movies online?

[@jasiahaugustus1864]

@Juan Billy Lately I have been using FlixZone. You can find it by googling =)

[@westongenesis7007]

@Jasiah Augustus Definitely, I've been using FlixZone for months myself :D

[@juanbilly1364]

@Jasiah Augustus Thank you, signed up and it seems like they got a lot of movies there :) I really appreciate it!!

[@jasiahaugustus1864]

@Juan Billy Glad I could help :D

[@smishra6378]

Also, if you want to fix 'Categorys', add this meta class in your model: class Meta: verbose_name_plural = "Categories"

[@bibekjoshi34]

thanks it is helpful

[@pedrocampoy7740]

Hey guys, I'm a novice coder, so take my advice with a grain of salt. But for me it worked better to use the category attribute on Post(models.Model) as a relation instead of a CharField. I used 'models.ManyToManyField(to=Category)' because i wanted posts to have many categories assigned to them. Feel free to correct me if I am incorrect in what i said. I'm happy to learn! And thak you so much for this series of videos John ! It has helped me a lot!

[@ibrahimhennihaouas9259]

the best method you can create: category= models.ForeignKey(Caterory ,max_length=60, on_delete=models.CASCADE, related_name= 'catego')

[@sayori3939]

Yes, if a category is a part of a post then why not make it a foreign key referencing Category table?

[@sayori3939]

But if you set on delete CASCADE and we delete some category form the Category table EVERY post with that category will be deleted as well :/ maybe you wanna set to SET_DEFAULT with a default value like "misc" so every post with deleted category will have its category set to "misc"

[@Morimove]

on_delete is not required because category can be multiple and blogs can be zero at a time. On category delete or blog delete their should be no effect on other records.

[@MrMurdox]

​@sayori3939 Unless you want the post to only have one category, then you use a many-to-many relationship. A post can have many categories, and a category can belong to many posts. With a foreign key, you are creating a many-to-one relationship, where a category can belong to many posts, but a post can only have one category.

[@EzekielCarvalho]

Excellent channel, I've been learning quite a bit from you on Django. You've got yourself another subscriber.

[@Codemycom]

Thanks!!

[@andrenevares7543]

I think you are the only one that gives attention to the default property. Other vids over KZbin do not mention that. A lot of students delete db.sqlite3 and migrations (not the __init__) and then do a migration of all Data Base. Of course, with this, you do not have errors when migrating the database. But, for me, it´s so much better to understand the default property and do not lose data on the future... Great Material.

[@unchart_d]

Am no longer rushing, am staying this helps to master the content.

[@Codemycom]

Sure, take your time

[@akshitkushwaha9479]

Sir, your videos are a great great help to someone like me who struggles with django

[@Codemycom]

Happy to hear it!

[@romanbuchta248]

A great tutorial about Python Django! Thanks a lot! Best regards from Austria (Vienna)! - Your tutorial about Python's Tkinter will be my next stop!

[@Codemycom]

Glad you're enjoying them!

[@Han_Zubon]

Like the Bob Ross of Django. Great stuff

[@Codemycom]

Ha Nice!

[@justasnom247]

great tutorial. any ideas how to skip restarting the server? I've noticed that the category appears after some time even without restrating the server, but are there any ways to make it instant, just like adding posts?

[@СвятославЛитвин-л9й]

I from Ukraine and my english so bad, but you so good in explanation and it`s great, thank you so much

[@Codemycom]

Thanks for watching!

[@sayori3939]

Wouldn't it be easeir to make category a foreign key with "on_delete=SET_DEFAULT" set to something like "misc" so the post wouldn't be deleted if you deleted certain category and you wouldn't have to do a query on forms.py?

[@Morimove]

i am suprized the you are covering every aspect of a website. Now I know why there are so many videos in the playlist

[@danieldiaz855]

Hi, Jhon, Thanks for this Django Series. As a feedback I think that it's better to create a Foreign key in Post.category field instead of the query you did.😄

[@mryaz9767]

Actually, this is more applicable and easyer!!

[@Morimove]

yes you are right because user can manipulate the HTML and can save any other category which is not in the category table

[@Morimove]

@@mryaz9767 but not secure

[@aygunbayir]

why we do not use category as foreign key ???

[@smishra6378]

Great tutorial! Here are my 2 cents to make the `choices` code a bit more pythonic- choices = Category.objects.all().values_list('name', 'name') choice_list = [choice for choice in choices]

[@felipevelasquez4587]

Para mi es mejor así ya que el formulario valida la categoría... si alguien tiene una solución mejor que la dé categoria_bd = Categoria.objects.all().values_list('pk','nombre') categoria_selected = [('','')] for item in categoria_bd: categoria_selected.append(item)

[@n.i.g.e.l]

choices = list(Category.objects.all().values_list('name', 'name')) Why the for loop if I may ask?

[@Noir_Egoiste]

choices = Category.objects.all().values_list('name', 'name') choice_list = list(choices)

[@muzy_mess]

Your videos and explanations are just amazinggg!!

[@Codemycom]

Thanks!

[@jaybon2076]

by calling {{post.category}} on the home.html page, doesn't that imply there is a a one to many relationship between our two models? I don't remember putting in a foreign key for this tutorial.

[@roppique]

Thank you very much for this video. but i have question -- how i can hide posts of any category from main page? but show in category list?

[@Codemycom]

Use an if statement on the main page to filter posts any way you like :-)

[@TungNguyen-fm3bt]

should i use like this ? categories = models.ManyToManyField('category.Category',help_text='Categorize this item.')

[@milliondollarmotivation6260]

I'm enjoying this series

[@Codemycom]

Glad to hear it!

[@erby6464]

in this tutorial you set up just one to one article to category how can i change it to be able to have one article in multiple categories

[@antorzuck]

i want to select multiple category. how can i do this?

[@Morimove]

sir you are not using foreign key why? if any user manipulated the HTML and saved any other category which is not in the database then?

[@shirishpatel7184]

Excellent tutorial sir, one question - how can we order items alphabetically in category select option

[@mediumshrimp9696]

Is there a way to add in 2 different Categories to a Post? I'm coding a clothing store and have the categories for tops, pants, shoes, etc. but I also want to add Male or Female in a different dropdown. Is there a way to do this?

[@universitystudio742]

i hope we can see more projects in the near future .ps : love your vids. keep up the good work and your chanel will grow evantually .

[@Codemycom]

That's the plan!

[@hariharanbalasubramanianpr4243]

Sir, I have 4 Questions sir.. 1) When we deploy this blog suppose if I add another category is there a possibility that it might not show up in main Webpage(add category page)?? 2) Is it a good practice to do like restarting the server again after adding a category? 3) Is there a way to avoid this restarting the server?? Thanks,

[@padybeats]

that's 3 questions ;-;

[@HammadJilani-z3p]

Can we not make category a foreign key just like we did for author field in Post class

[@Codemycom]

you can do anything you like, it's coding...

[@som5488]

If you are wondering how to add the category option to the edit form: Open up your forms.py. Under Meta>fields, include "category' Then under widgets, include the following code where you want your categories to show up: 'category': forms.Select (choices= choice_list, attrs= {'class': 'form-control'}), Save and then refresh your work.

[@andrewwebberley2294]

Love the video, had a few suggestions for videos (don't feel pressure), comments, like button, slugs (choose the url), and author pages!

[@Codemycom]

Yep, going to try to hit most of those

[@007rahulb]

Sir, I've created a category with name "JS". and also created a post with the same category. On my home page the post is showing up and in the dropdown too but when I click on the dropdown "JS" it says "404 error-no post available". I've noticed that "{{cats}}" which is supposed to be "JS", has become "Js'... How can I fix this?

[@mhood82]

I've been enjoying this series so far, but can't seem to get my category field to work properly. It insists on displaying as a text input instead of a select dropdown. My author field works fine, I've rewatched the video a couple times, scoured for typos, made sure to migrate, and even tried restarting my server several times. The choices also never displayed anything even when testing as a placeholder in title. Not sure what I'm missing...

[@mhood82]

Narrowed this down to my 'widgets = { ... }' not working at all. Fixed the main issue by defining the choices inside the Post model class Post(models.Model): categories = Category.objects.all().values_list('name', 'name') title = models.CharField(max_length=255) author = models.ForeignKey(User, on_delete=models.CASCADE) category = models.CharField(max_length=255, choices=categories) This seems to have the desired effect, but I need to figure out how to pass class names still.

[@TheHeroesSquare]

@@mhood82 It helped me a lot as I had no idea what was wrong w the code. Thanks!

[@elizabethkimberly8083]

@@mhood82 Thank you sooooo much!!!!!!

[@tawhidshaheed145]

When I want to submit any post find an error like ''Reverse for 'article-detail' with arguments '( '2', '3' )' not found . 1 pattern (s) tried: ['article/(?[0-9]+$']........... Please help me out...Sir

[@angusgane48]

Pause the video at 2:01. The get_absolute_url method has been changed to redirect to the home page instead of the article detail. I think your method might still be trying to get to 'article-detail'. I'm not clear why this needs to change though.

[@adelcherfaoui5011]

i ran through the same error before i noticed that the error start occuring when i try post the 10th post, and the get_absolute_url function find trouble redirecting to a detail page with an id with 2 digit number. so in the models.py instead of using parenthesis after the args in the get_absolute_url function. use brackets, otherwise it will cause a NoReverseMatch error, after ID = 10 (for two digits numbers id ) Example: return reverse('article_detail', args=[str(self.id)])

[@ShadowStrikingNinjas]

Before creating the for loop for choice_list, when I simply set choices=choices in my select box, it worked as it was intended. It didn't return the "query set" jumbo. I guess maybe django has updated since this video was made? Nevertheless, excellent tutorial.

[@euriperez9586]

Is there a way to not have to restart the server everytime a category is created?

[@tomiwaibrahim851]

Check out ModelMultipleCoiceField.

[@bibekjoshi34]

Hello sir! can't we make that ( to add category and append it right there in Add post page) like In WordPress we do... please help me out

[@Codemycom]

I don't have any videos like that

[@khachimicheal3192]

Hi john after adding the category, my username wont appear again what could be the problem

[@Codemycom]

you mistyped something somewhere

[@invalidsb]

I was waiting for this... Video.. Sir

[@Codemycom]

Glad you liked it

[@selvijay2678]

How do I sort the posts by months.

[@baslaleandro]

If you use the output of Category.objects.all().values_list('name', 'name') directly into choices you get the same behavior without having to restart the server.

[@chethanmgowda8718]

Thank you and waiting for next video😎

[@Codemycom]

Thanks for watching!

[@kykurniawan]

sorry, i am new in python django, i have a question about this video, why you not using table relation to create post category feature ? ,

[@viswamberprasad9418]

he's using a Class Based View,and in that he has imported the Create View,which handles all the creation stuff for you,its basically like a function based view,but easier to code and manage. hope that helped!

[@datakhukhua4889]

Why u don't make relationships between post and category tables ? it will be better if we want to filter posts by category .

[@animalcompilations832]

In forms.py file, choices = Category.objects... my vscode says "Category class has no objects", despite of that the code works... regards from Brazil

[@vamsiKRISHNA-io1yi]

Its a problem with pylint. Just install pylint. I had the similar issue.

[@animalcompilations832]

@@vamsiKRISHNA-io1yi thx

[@Alfakhri99]

Is there any way to add an image to category like having a category name and an image? anyone has suggestions please share tutorials , article or anything. Thank you

[@duttybwoy556]

wouldn't it be much better quicker and easier to make a relationship? a foreign Key..... from the Post model category field to the category model... so the drop down menu is directly coming from the Category model and so you rid of all the parafernalia of for loops and lists and querying in the forms.py file.... I think... am I right? am I wrong??? 🤔 i think I'm right

[@Nessa-u5l]

Great tutorial ! Thanks alot.

[@Codemycom]

Thanks for watching!

[@techieca-sreeharshabv3159]

Hi Sir, If we need to add a particular article for more than one category, how can we do that sir?

[@Codemycom]

Not possible as the code is currently written...would need to change it.

[@rajkumarnepal]

@@Codemycom Please make another tutorial for this one. It would help for most of us.

[@Codemycom]

@@rajkumarnepal sorry, I’m done with this one…

[@prahladthelord4668]

Sir .. How to render categories in django admin panel itself ?

[@Codemycom]

Rewatch the video, I cover that exactly

[@prahladthelord4668]

@@Codemycom I mean dropdown in django admin panel ... not it our custom post page

[@KunalVerma-gi3pq]

if you put script to get choices inside the funtion, you will not need to restart server every time to add a new category.

[@WingsDesign]

Hello good morning, I'm really enjoying your videos classes, congratulations, I wanted to know if there's a way to put just a few categories, without having to appear in the menu Exe: I have the category listed in the menu Police, education, politics, sports only I didn't want to show the sports category in the menu, But if I need to make a div with the sports category, it would appear, would it be possible? could you show me how to do it? Thanks in advance! And keep up your perfect work!

[@dilipspk]

Without refreshing server category is not updating Is it good approach sir?

[@Codemycom]

yes

[@dilipspk]

I would appriciate if this issue resekved by anyone Sir, I applied it on my production level project but without restarting server object is not displaying in the front end But object is saving What would be the issue and what has to be done for that?

[@euriperez9586]

@@dilipspk stackoverflow.com/questions/3419997/creating-a-dynamic-choice-field this helped me to correct the issue, so you don't need to restart server

[@khodok9636]

@@euriperez9586 which answer to be exact ? the first one ? can you tell exactly what you did ?

[@euriperez9586]

@@khodok9636 create a new model called Category and then in your other model use a ForeignKey field that points to the model Category, so now you can even add categorys trought admin panel.

[@rajkumarnepal]

Can you please add the tutorial for blog category with multi-check fields like in WordPress. Regards

[@towhidurrahman8961]

hey! Your tutorials are awesome. can you make a video on "Auto Posting on Facebook, Twitter, Instagram, LinkedIn & All Social Media platform" for us? we want our blog post to go viral on social media platforms without any extra work. Is it possible with django? Please let me know. thanks again.

[@Codemycom]

No sorry

[@ogananfe]

I think the problem with the categories has to do with the fact that the forms.py file is only read once when the server is initially started and the forms are originally imported so the choice_list is only declared when the file is initially read. You need to retrieve the categories from the database ever single time the forms are retrieved not just when the forms are originally imported to ensure the most recent data are used. Am not sure tho cos i haven't tried it out yet😂 i just used a foreign key to link to my categories model

[@sayori3939]

Yeah it seems a foreign key is much more suitable but be aware of the on_delete option, we don't wanna delete every single post with a certain category if we ever delete said category

[@akkutabussova6109]

Good video! But why didn't you use a foreign key like the author?

[@shezikhan5934]

Sir how to hide author field from form.

[@invalidsb]

Ya 1 week... Sir.. Looking handsome. 😋😊

[@Codemycom]

ha

[@rezarezaee7739]

how can i create category field like author field with ForeignKey?! ty for nice tutorial!

[@Codemycom]

In the same way

[@fareedyarkhan8462]

The best way you can use catagoreys as foreign key in post model

[@bibekjoshi34]

can you please Guide to create category System Like WordPress

[@madusan1]

Why would you not have used category as a 1 to many table. Sand markup tables appropriately. Your method does not protect against duplicates

[@Codemycom]

We're working up to more advanced topics like relationships

[@roguepanda2032]

thanks man !!!!

[@Codemycom]

No problem!

[@davishek7]

Thank you.

[@Codemycom]

Welcome

[@brettgastelum5330]

I got an error saying that the class 'Category' has no objects member.

[@Codemycom]

Check your code for typos

[@brettgastelum5330]

@@Codemycom copy pasta'ed all the 'Category' text to make sure it was uniform across the board and reread what was on the screen multiple times. Everything looks correct. This has happened to me once before though... I was trying to make the Polls app directly off the Django website and this exact same problem came up. I can see that there are indeed objects in the Categories class, for whatever reason they're not being read by the code here.

[@brettgastelum5330]

@@Codemycom =.=....... Had to add this to my settings.json: "python.linting.pylintArgs": [ "--load-plugins=pylint_django" ], Now I'm not getting the error. I've been feeling like I need to switch to something other than VS Code lately, I just like the way literally everything else is laid out. Just seems like this one in particular takes a LOT to get it to work properly, it's definitely not an "out-of-the-box" vibe.

[@Codemycom]

@@brettgastelum5330 I'd never paste code...python requires correct indentation that often gets lost when you copy/paste

[@anirbanraha33]

I'm getting the same error . What should I do ?

[@miraccan00]

we can add slug field I think :D

[@miraccan00]

why we don't use relation one to many ? because one post has many categories ?

[@Codemycom]

because I haven't gotten to that...right now our blog posts have one category

[@vukspasojevic2396]

No need for restarting the server if you use the ForeignKey field to Category model. Also, it would be a good example to show in this case what to do with the database and migration files and how to reset everything.

[@jenilchudgar]

Categories: Knitting😆😆

[@Codemycom]

lol

[@jenilchudgar]

Is this series over?

[@Codemycom]

@@jenilchudgar Yes, for like over a year I think. There are 36 videos in the playlist.

[@G-3-A-R-Z]

class Meta: verbose_name_plural = 'Categories'

[@G-3-A-R-Z]

class Meta: verbose_name_plural = 'Categories'