Questions tagged [cs50-web-programming-with-python]

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decoding to str: need a bytes-like object, HttpResponse found

While converting markdown to html i am getting this error def title(request, title): global mdValue mdValue = util.get_entry(title) htmlValue = m.convert(mdValue) # error occurs on this ...
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33 views

cs50w Project 1: Web page running very slow

I just finished my book review page for project 1 and everything is working fine, but the site takes forever to load certain parts. When trying to log in or create a new account, or when trying to ...
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2k views

sqlalchemy.exc.ArgumentError: Could not parse rfc1738 URL from string

Traceback (most recent call last): File "list.py", line 9, in engine = create_engine(os.getenv("DATABASE_URL")) File "C:\python 3.8\flask_env\env1\venv\lib\site-packages\sqlalchemy\...
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1answer
437 views

API Goodreads issue with the book page

I have been facing an issue with the API, it does not display in the book page in project1 I keep getting the error "Not Found" could someone help me? Check the screenshots of the python code below, ...
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9 views

Server problem exit?

I run the python scraper bot but after a while the problem appears = --- server exit problem ---- how to handle it?
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25 views

“I'm Feeling Lucky” button only work if it's a definate keyword

I'm taking the CS50W course and in project0 the instructions is to make an "I'm Feeling Lucky" button that redirects you to the first page like the original does. after monitoring urls and ...
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1answer
4 views

default relative Imports in Django wiki failing

In views.py, when initially running the pregenerated line from . import util failed with relative import error. The standard from .dir import package also failed. Deleting __init.py__ also has no ...
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1answer
33 views

CS50Web - Not Sending Emails

I just started with the Mail project for CS50Web and came across a really strange problem. Currently, I'm working on the part where I need to send an email. My algorithm for this is simple: Add event ...
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12 views

Project: My “copy to clipboard” functionality works fine on my PC but not on iPhone or iPad :( Any ideas?

I'm doing my final project for CS50 and I have a html page which creates a list of items using a "for" loop, and a button below it which has a "copy to clipboard" function. It all ...
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1answer
113 views

Mail CS50 Web - How to Send Email (API not working)

I'm very new to Javascript and working on mail, project 3 for CS50 web. I've been working on just sending the email initially, for about a week and I'm getting very discouraged. I can't seem to get ...
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39 views

Does anyone know how to use Django with minimal setup? Perhaps in a cloud environment or some IDE?

I can't seem to set up Django on my computer. As for running on my computer, I have just installed python and I think pip comes along with it? So I checked if I had pip installed using the command &...
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80 views

cs50w Wiki Edit Function: successful edit but NoReverseMatch for edit thrown

My edit function throws a NoReverseMatch (Reverse for 'editpage' with arguments '('',)' not found. 1 pattern(s) tried: ['editpage/(?P[^/]+)/$']) when I try and submit edits on the page. However, when ...
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1answer
96 views

cs50w Project 1 Wiki Search: layout.html failing to submit POST to views.py

currently working on the search function for project 1. I've updated layout.html, urls.py, and views.py, but when I input anything into the search bar layout.html does not pass the POST information to ...
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2answers
142 views

Help with Search Bar - Wiki Project1 CS50 Web Django

For the Wiki project I'm having trouble implementing the search bar. I have spent about 2 days researching search bars in Django, but so far everything I've tried yields the same result: No matter ...
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12 views

How does the server know if the client has received the data completely?

As i've understood, the client first enters a domain name and the DNS returns it an IP address where the client sends his request and gets a response from the server. Now while sending it back, the ...
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18 views

Issue using Mingus package in CS50 project: /bin/sh: 1: lilypond: not found

I am trying to use the Lilypond module from the Mingus package (for my final project) in CS50 IDE, but while running the following python code (as provided in the docs), it returns an error: >>&...
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25 views

Confusion in cs50 Javascript course 2020

In the Javascript lecture pf CS50's Web Programming with Python and Javascript , there is an example where Brian tells that how to use dataset and fetch the value of it in the case of multiple buttion ...
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56 views

CS50W - Project 4: Network - Followers Model

I'm having trouble implementing the followers part of this project. The spec seems to say that you should have a seperate model called Followers, and not just add a followers field to the User model. (...
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1answer
189 views

CS50W Django Project1 Wiki - Textarea issue

I got stuck at completing Wiki assignment because of strange behaviour of textarea in form, needed for creating and editing entries. Everytime user saves the entry, for each line of entered text there ...
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1answer
93 views

CS50Web: Project1 Wiki - Error loading markdown2 module

I've tried to import the markdown2 module in my views.py file but I get an error ModuleNotFoundError: No module named 'markdown2'. I've tried restarting my machine, uninstalling and reinstalling the ...
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21 views

Flask-WTF: input field rendered based on the user's selection

I'm trying to make a form where the user logs an action they've done. Because there were too many actions, they are now split into categories and then, based on which category the user chooses, the ...
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1answer
84 views

cs50 web programming with python & javascript. Entry not saving and I can't figure out why

I am a newbie coder and I just started the cs50 web programming course on edEX. I seemingly cannot get my code to save a .md (markdown file) in a directory. For now I am just trying to save the .md ...
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190 views

Django model default value not working

For some reason, the default value for a Django model field I have doesn't work. As in, if the value is left blank by the user when creating an object for that model, then when the value is used in a ...
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1answer
363 views

CS50 Web Python Project 1 Wiki: entry method causes search method to break

I'm working on Project 1 Wiki. I've independently got the entry and search functions to work, entry works by itself and search works by itself. If un-comment the code related to entry, search breaks. ...
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1answer
84 views

CS50W - Django Forms vs HTML Forms

CS50W 2020 - Project 2 - Commerce How come in lecture 3 (https://cs50.harvard.edu/web/2020/notes/3/#django-forms) Django forms are used, but in lecture 4 (like here: https://cs50.harvard.edu/web/2020/...
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97 views

Final Project: Error on uploading files to CS50 IDE via form

tl;dr: CS50 IDE won't let me upload certain kinds of files (via a form on a webpage) without any explanation. I'm writing the function upload_file() that allows the user to upload a file. (It's a CSV ...
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1answer
72 views

CASH NOT UPDATING - FINANCE SELL

so everything I have so far is working except the part where I need to update the cash right after I sell a stock. As you can see in the table below what's happening is that everytime I sell a stock ...
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109 views

how do I perform a search

This is project one for wiki and I am stuck this is my last thing to do. below are screenshots of the views.py, util.py and template. We are suppose to use the functions from util.py(This is the last ...
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21 views

I keep getting invalid syntax at else. I am trying to redirect a page

here is the code. I keep getting invalid syntax at else. Can someone explain why and help please.
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29 views

I keep getting - TypeError: unhashable typ

can't get page to redirect please help. I keep getting the error TypeError: unhashable type: 'dict' at line: return HttpResponseRedirect (reverse("encyclopedia:index", { "entries":...
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26 views

how to save an entry and also add it to an existing list

My code won't work need help. for some reason when I try to save an entry it just refreshes me back to the homepage without adding or saving the new entry I tried to create. what can I do different? ...
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291 views

CS50 Web 2020, Project 1 - Wiki, CSS not working

I'm currently using Django as explained in cs50w 2020 lecture 3. Under the static folder inside encyclopedia directory is the styles.css. This was in the distro code and there is already some styles ...
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1answer
121 views

CS50Web python. I can't get a new entry to save and show on the homepage of my wiki project. I am using Django with python

I can't get my code to save a new entry and return an error message if entry already existed. its just the views.py I can't figure out help please. code below
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33 views

Facing issues while trying to Post HTML form contents to views.py route using fetch method POST in javascript

Hello I am trying to post information i get from a form to an API that submits it to the views.py file in Django. Can anyone tell me where i am going wrong. Below is my javascript code ...
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1answer
93 views

Help please: I keep getting - TypeError: unhashable type: 'dict'

I keep getting - TypeError: unhashable type: 'dict' at line: return HttpResponseRedirect (reverse("encyclopedia:index", { "entries": util.save_entry(title, content) })) My code is ...
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1answer
419 views

CS50W - Wiki with Django - I want to edit a wiki entry, but I don't know how to send the default value to the template if I use Django forms

I've tried to do this: class editPage(forms.Form): title = forms.CharField() textContent = forms.CharField(widget=forms.Textarea(attrs={'class' : 'textContent'})) def edit(request,name): ...
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3k views

raise JSONDecodeError(“Expecting value”, s, err.value) from None json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

@app.route('/api/<string:isbn>', methods = ['GET']) def isbn(isbn): #import api from Goodreads (stats) book_data = db.execute("SELECT * FROM books WHERE isbn=:isbn",{'isbn':isbn})....
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70 views

How do I create an advanced query page using HTML and CSS? Should I use any other langauges to make it a faster process?

How do I create an advanced query in HTML and CSS? I have to create a front end similar to Google and have already outfitted the first two pages, it's the 3rd page, the advanced query page that I need ...
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33 views

Placing django_markdown2 somewhere in my PYTHONPATH

I am going over the documentation for using django-markdown2 in Project1, and I don't know what is the best way to: 'Place django_markdown2 somewhere in your PYTHONPATH.' https://github.com/...
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8 views

Does __tablename__ create a new table for each object? And what is .query.all? Is it a method?

I am really confused In CS50'S Web Programming with Python and Javascript-ORMs and APIs. There is weird syntax like class.query.all. What is Its definition (a method, a function, etc).
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75 views

CS50W Final Project: I need help with deploying my website

for my final project, i made a website that i want to also deploy to production, because i want to be able to implement it in real life. I have made the docker image according to what Brian ...
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32 views

HTML: Trying to download files from directory

On the quote.html page I have a download button that I want to download the text.txt file in the files folder but when I press the button it tries to downloads text.htm and outputs an error since ...
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25 views

Session issue on CS50s project 1 Book Review

I need to learn more about session. I have book route which goes to a book page stating the description of the book, reviews from other users and write a review. I create a form in html and submit my ...
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43 views

Flask-socketio not able to send instant messages

I am trying to make a basic chat application with rooms using flask-socketio, but whenever I run the code on my browser, a weird error comes on the console and I am not able to send any messages ...
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18 views

href not working properly

i have a layout html file in the following path: C:\Users\user1.vscode\files\web50p1\templates\layout.html in which i have the following code: <a href="/logout">Log Out</a></li&...
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1answer
75 views

Can't import books.csv using import.py

I'm on a project1, here is the link to it: https://docs.cs50.net/ocw/web/projects/1/project1.html I've successfully made a Table books using my Python script, however when I try to import the "books....
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93 views

Problem with Flask Flashing message - messages appears twice

I'm newbie at Flask. I am trying to manage the flash alerts to appear where I want them. When I write the code get_flashed_messages() in the .html module the messages appears twice, without this code ...
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20 views

Failing to extract data from html selector

I am currently doing the project1 of the CS50 web programming course and having issues extracting data from an html selector into a flask route. I think its probably best if I just describe what I ...
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39 views

Trying to flask run the task session on the CS50 web Lecture DATABASE issue

I had a great time learning about HTML and CSS. Then came this intimidating flask feature. I was able to create a session["username"] to login and logout. I'm trying to use session to create a todo ...
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26 views

CS50 Web Project 1: Is it necessary to use raw SQL queries?

This is not strictly a coding question, can we use the SQLAlchemy ORM for the Books project? I know it is forbidden to use as per the requirements, but I am unable to run my program using raw ...