How To Add Blog Category Navbar Links - Django Blog #15

[@groovyx638]

There is a trick with context_proccessors in django. For this case just add context_proccessors.py file in the app directory. Inside write something like: from .models import Category def navbar_context(request): return {'cat_menu': Category.objects.all(), } And don't forget to add this proccessor do settings.py : TEMPLATES = [ { ... 'OPTIONS': { 'context_processors': [ ... '.context_proccessors.navbar_context' ], ... That will pass 'cat_menu' value to every view (or any other value that you will write inside navbar_context dict). Nice django blog course btw, found a lot of cool django features for myself!

[@rogueDukakis]

You my friend are a genius. How did you learn to do that?

[@Codemycom]

▶️ Watch Entire Django Blog Playlist ✅ Subscribe To My KZbin Channel: bit.ly/3bWN6wj bit.ly/2IGzvOR ▶️ See More At: ✅ Join My Facebook Group: Codemy.com bit.ly/2GFmOBz ▶️ Learn to Code at Codemy.com ✅ Buy a Codemy T-Shirt! Take $30 off with coupon code: youtube1 bit.ly/2VC9WUN

[@shawnbeans7389]

Very nice vedio, thanks the reason i am leaving comments on every vedio is beacause 1 day i decided that i am going to leave a comment on every vedio i watch also this was a very good vedio.

[@Codemycom]

Fun

[@codedjango]

John...this is the first time I see that you are not leaving this halfway through and requesting viewers to pay for the rest of the series...Great... would really appreciate to see this entire series till completion👍... Appreciate if you could also release the source code 😁

[@Codemycom]

Yeah I'll release the source code eventually...but you don't really need it...it's not all that extensive.

[@spreadhysteria3650]

Thank you very much for this, as a poor person like my self who just want to learn and maybe get a job this is a blessing.

[@Codemycom]

Glad you enjoy them :-)

[@zubin1677]

I noticed that you changed the code from the previous video on line 31 (@14:30) of views.py page from cats.title().replace('-'.' ') to cats.replace('-', ' ').title() Is there any specific reason to do so? Because I faced some issues after slugifying from the previous video where after restarting the server, it would give me "the page does not exist" thing after navigating to an existing category.

[@Codemycom]

Those things aren't related

[@zoljargalenkhtaivan9661]

I find every solutions of problems that confused me. Thank you man, I am from Mongolia.

[@azimsonny6036]

was waiting for your updates! :)

[@Codemycom]

More to come! I post django blog videos monday, wednesday, and friday

[@silaskanku7377]

The category main page doesn't show the category nav item, how can I fix that?

[@spreadhysteria3650]

I want to put the navbar category in the category.html, but I can't figure it out.

[@ali_sadrian]

Now still if we add a new category, we have to restart the server How do we fix that Sir?

[@ZabeelBasheer]

Hi John. This is a fantastic series. I was able to follow through most of the instructions until now. I just have clarification here on the dynamic category context data. I understand that we could use a function get_context_data repeated under the classes in views.py. My question is, if we need to use it in a function, for example, CategoryView, how do we merge these two functions?

[@Codemycom]

It's a little tricky...I sort of get into that later in the course

[@hanadraskovic6839]

Hey, amazing tutorial, thanks! I have the same question, hope it comes up later. I am new to django but not to python. It looks simple but I think my syntax is wrong, or I am missing something. I tried to define the function outside of the classes, add a variable to the function def, one to replace the HomeView as a static but it's not working.... >> get_context_data(self, *args, **kwargs, view): ...super(view, self)

[@marcelotedescodemiranda401]

I have a little problem I made this code but when I go to the category the nav dropdown list don't appear class ArticleDetailView(DetailView): model = Post template_name = 'article_details.html' def get_context_data(self, *args, **kwargs): cat_menu = Category.objects.all() context = super(ArticleDetailView, self).get_context_data(*args, **kwargs) context["cat_menu"] = cat_menu return context

[@rafiatunlubaba4254]

have you solved it

[@silaskanku7377]

How to display category nav in editprofilepage and showprofile page?

[@RahulRoy-wo9dg]

hi i just want to suggest that we can use templatetags instead of using context, then we have to write a function in the backend once and use it in frontend multiple times...BTW loved your videos...sir u are really awsome

[@gamingmobility8734]

absolutely underrated comment!

[@raviv469]

How to use cat_menu dropdown menu in each category

[@nikithashekhar1522]

cat_menu query set is not formed in my page i exactly followed you whats tht issue

[@Codemycom]

check your code, you think you followed exactly, but you missed something.

[@jarvismillan2529]

hi john! great tuts, thanks for your efforts. I would like to ask how to add number of posts per category. i tried it using annotate but it doesnt work.

[@md.tanvirfoysal9942]

I'm getting this error. Reverse for 'category' with keyword arguments '{'cats': ''}' not found. 1 pattern(s) tried: ['blog/category/(?P[^/]+)/$']

[@anopta]

Reverse for 'category'......means that there is no return url for your category. Check this:. Class AddCategoryView should have: fields = '__all__' success_url=reverse_lazy("home")

[@apolovzla_ccs]

Hello guys. I managed to make the navlink work on every single view and it is really easy, all you have to do is: 1) use this url pattern at the URLconfig file: path('/', CategoryView ,name='category'). As you can see I simplified the url to only use the string part of the category. You have to put this url parameter at the very last position of your urls list, if not, you will receive an error for any address you try to reach, because Django is going to check every url against this pattern if you place it at the very first place of the list. As an example, this is my url list from the url.py file: urlpatterns = [ path('', HomeView.as_view(), name='home'), path('article/', ArticleDetailView.as_view(), name='article_detail'), path('add_post/', AddPostView.as_view(), name='add_post'), path('add_category/', AddCategoryView.as_view(), name='add_category'), path('article/edit/', UpdatePostView.as_view(), name='update_post'), path('article//remove', DeletePostView.as_view(), name='delete_post'), path('conocenos/', TemplateView.as_view(), name='conocenos'), path('identidad/', TemplateView.as_view(), name='identidad'), path('hacemos/', TemplateView.as_view(), name='hacemos'), path('contacto/', TemplateView.as_view(), name='contacto'), path('/', CategoryView ,name='category'), ] Pay attention to the last row. 2) At the navbar, replace this: XXXXXXXX with this: XXXXXXXX where XXXXXXX is the string/name of your category, I'll give an example with a category called Banks: replace this: Banks with this: Banks And that's all. It should do the trick. Right now I am struggling to try to show all the posts from the same category at the ArcticleDetailView. I need to show all the posts from the same category of the opened post, depending on which category it belongs to. For example, if I open a post from the "Banks" category, I need to show all the posts from that category at the bottom of the page, but if later on I open a post from a category called "Clients" I need to retrieve all the posts from that category at the bottom of the page. So, what I need to do is to take the rendered post's category and pass it to the view.py file to render the other posts from the same category in the page. I understand that I have to do it using the get_context_data, but it's not exactly clear for me how to do it. @Codemy.com any idea on how to do it? Hope I helped you guys out, and keep coding, don't give up, keep learning.

[@Codemycom]

cool

[@apolovzla_ccs]

@@Codemycom Jhon, can you point me to the direction where I can find information on how to capture information from the page? as I said in my comment, how can I capture the post category to show all the other posts fro the samr category at the bottom of ghe page? how can I captura that "variable"?

[@spreadhysteria3650]

Did you manage to bring the drop-down menu category navbar, in the category.html?

[@apolovzla_ccs]

@@spreadhysteria3650 I haven't been able to capture the page's category. Actually I bough a book on Amazon to learn more in depth about Django. In WordPress there's an environmental variable that captures things like the post's category but I can't find such thing in Django so i think it needs yo be coded by hand.

[@angusgane1979]

Is this what you are looking for? Gets a category dropdown menu in categories.html def CategoryView(request, cats): category_posts = Post.objects.filter(category__iexact=cats.replace('-', ' ')) context = {} context['cats'] = cats.title().replace('-', ' ') context['category_posts'] = category_posts cat_menu = Category.objects.all() context['cat_menu'] = cat_menu return render(request, 'categories.html', context)

[@jayashanfernando4714]

just add a category type in Caps lock on , but it doesnt shows any posts under that

[@ffoofooify]

You are Amazing and funny from France :) continue

[@Codemycom]

So nice of you to say!

[@antonyjohn2163]

i have created the def get_context_data function exactly as it is and when i try to pass in {{cat_menu }} in my homepage it doesnot show up

[@Codemycom]

Then it's not exactly as it is. You have a typo somewhere

[@antonyjohn2163]

@@Codemycom could you upload a source code on github for the project up until now im getting some no reverse match errors also after i had the ckeditor installed if your could upload the project on github it would be really helpfull we can keep checking our code also , also this is one of the best turtorial i havefound on youtube for django thanks sir.

[@Codemycom]

@@antonyjohn2163 I will sometime, but you'll have to rewatch the videos and retrace your steps in the mean time

[@antonyjohn2163]

@@Codemycom alright sir

[@RahulPatil-m]

@@antonyjohn2163 did you get the solution??

[@prahladthelord4668]

Sir How to make the search function , In django blog to search for blog articles ? If Possible make a video plz

[@Codemycom]

We may look at that

[@solomonkassahun7845]

damn you are the best thing of 2020 thank you!!!!

[@Codemycom]

Thanks! Though being the best of 2020 is maybe a dubious honor ;-P LOL

[@joeyrayhall3142]

I tried for two hours to get this to work; the button shows up on the navbar but does not show the pulldown content... :(

[@Codemycom]

what did you do differently from the video?

[@jyotirani6238]

One of my category is DIYs. Now if I go to blogcategory/DIYs its working. but clicking on DIYs category from the navbar take me to blogcategory/diys and this page is showing 404 error page (the page I created for the case if the category does not exist). What should i do to solve this problem?

[@fatimas6428]

I'm facing the same problem... guess we have to add categories in all Small letters...I think the is somehow converting CAPS into small letters and in the CategoryView, it is not able to find a match....i don't know if I'm correct... If someone has some better solution, please do share

[@jameskulu]

Is there any other solution for not repeating that code for listing category items in navbar?

[@Codemycom]

of course, you can do it any way you like...there's always infinite ways to do a thing

[@apolovzla_ccs]

@@Codemycom What about defining the function at the beginning of the views.py file and call it from inside every class view? the problem is how to pull the class name to add it automatically to the super function contained in the context variable. Where can I find information about that?

[@iamnetwork9423]

Sir, how to capitalize cat_menu_list

[@nooobgamer01]

great sir ❤❤

[@Codemycom]

:-)

[@mehmetali1945]

does base.html has access to home.html variables we passed like cat_menu , if so is it specifically to home.html ?

[@Codemycom]

pop it into base.html and see

[@mehmetali1945]

@@Codemycom seems base has only access to home variables :)))) thx

[@abhishekS195]

hi, I have the same doubt. Does get_context_data(self,*args,**kwargs) gave base access to variables from class HomeView . also can we write get_context_data(self,*args,**kwargs) in any class view.

[@athishga3096]

drop down menu is not working ... Could u help me to sort out this...?

[@Codemycom]

what did you do differently from the video?

[@plusk343]

Heyy, a humble request, please do a setup reveal and recommend some setup tips to young and aspiring programmers. Please....

[@Codemycom]

setup of what?

[@plusk343]

@@Codemycom Your computer and build and other things that are on your desk right now

[@Codemycom]

@@plusk343 ah...it's not that exciting :-p my desk is in a film studio...

[@plusk343]

@@Codemycom PC specs???

[@plusk343]

Its always more exciting for the viewers than the creators! But as always, the last word's yours.

[@tomyadam6851]

How to do category have parent category or sub category ? any idea

[@Codemycom]

Would take too long to explain in a comment

[@tomyadam6851]

@@Codemycom thank you for answering , can you make video to explain the sub category

[@miranpolo7367]

help me my dropdown not open please

[@rafiatunlubaba4254]

did you solve it?

[@satyabansahoo1862]

@@rafiatunlubaba4254 Yes... Use this snippet Dropdown Action Another action Something else here

[@mujassimjamal24]

Sir, plz make videos on django tutorial for absolute beginners ❤

[@Codemycom]

That's what this is

[@robh9184]

The trick is to start at the beginning of the playlist. Good Luck!

[@Chibudomobasi]

create a package

[@Codemycom]

what does that mean? lol

[@pauldzvonyk9044]

in your views.py, create: class CategoryMixin: def get_context_data(self, *args, **kwargs): cat_list = Category.objects.all() context = super().get_context_data(*args, **kwargs) context['cat_list'] = cat_list return context and inherit this class in other class Views, that will work just fine.

[@hamzazahir1884]

category names with first letter as capital won't show anything and would give an error "Not Found, This page does not exist". how to fix this?