Trying to build a dynamic Table using Flask/turbo/threading

Hey guys

Im currently trying to create a dynamicly updating table, housing some data and I'm slowly loosing it.

The problem is, no matter what I do, I can't seem to get it to consistently update.

The wierd thing is, sometimes it will randomly work,but it will start duplicating the "delete all" button with every update. And then after a quick reload of the side, without changing anything in the code, it won't update anymore.

I also sometimes get a "GET /turbo-stream HTTP/1.1" 500 -" error, and then without changing anything, just restarting frontend.py, it won't appear again.

The following code is what I have currently:

frontend.py:

import threading
import time

from flask import Flask, Response, render_template, url_for
from turbo_flask import Turbo

from Backend import Backend

app = Flask(__name__)
turbo = Turbo(app)
app.config['SERVER_NAME'] = '192.168.2.183:5000'

#This is what trap_data looks like (for a single entry):
#(141, '192.168.1.1', 'Authentication Failure', 'Invalid username or password', 3, 1,

/r/flask
https://redd.it/10dw2xv

Little confused how how data is passed from Python up to html

As many have probably seen from my incessant posts as of late, I have been writing a flashcard website. My starting point was a tutorial to write basic notes using a sqlalchemy and I've been fiddling around getting it to do what I want. One thing that confuses me is exactly how the html side is seeing all my database entries. So In python I have,


fetchedflash = Flashcard()
@views.route('/', methods = ["GET", "POST"]) #this is homepage route(url)
@loginrequired
def home():
...

return rendertemplate("home.html", user = currentuser...

Where current_user(something from flask_login I also don't fully understand yet) points to my user entry in the database. The User entry is tied to decks and flashcards also in the database entry.


The html has,

 {% for deck in user.decks %}
...


And I'm really confused as to how the HTML is seeing all the deck elements in "user." IS the entire user database being

/r/flask
https://redd.it/1avpsge

How do I add a new entry to my many to many related table in Django?

I have two models Course and Educators. Course has 3 fields course\_name, course\_educators and course\_past\_educators which link Educators to Courses by many to many. I want to write a function so that whenever a new entry is added to course\_educators that entry will be copied over to course\_past\_educators.

#models.py
#code for Educators model
class Educators(models.Model):
educator_name=models.CharField(max_length=20,default=None)
educator_img = models.ImageField(upload_to='educators_img',default=None)

#code for Courses model
class Course(models.Model):
course_name = models.CharField(max_length=100)
course_educators=models.ManyToManyField(Educators, related_name='current_educators', default=None, blank=True)
course_past_educators=models.ManyToManyField(Educators, related_name='past_educators', default=None, blank=True)

#views.py
#This is the function I wrote so that entries into course_past_educators are automatically added when course_educators is added with another entry.
u/receiver(m2m_changed, sender=Course.course_educators.through)
def create_past_educator_on_add(sender, instance, action, reverse, model, pk_set, **kwargs):
if action == 'post_add' and reverse is False:


/r/djangolearning
https://redd.it/1cq2j42

CSRF Token Error

Hey I get this CSRF Token Error on my webserver.
i dont get where this is coming from because they are the same token before and after.
I checked my steinngs and my conf and cant find the error.


https://preview.redd.it/ar4qu70h4ste1.png?width=1222&format=png&auto=webp&s=28e79c8dc2338487301ac0a1fd642096dbe7097d

https://preview.redd.it/nkco18wj4ste1.png?width=1210&format=png&auto=webp&s=0d2ba8ec728bac99aad92f52527fd353ba6cb815

#This is my settigs for nginx

    SECURE_PROXY_SSL_HEADER = ("HTTP_X_FORWARDED_PROTO", "https")
    SECURE_SSL_REDIRECT = True
    SESSION_COOKIE_SECURE = True
    CSRF_COOKIE_SECURE = True

    # Security headers
    SECURE_CONTENT_TYPE_NOSNIFF = True
    SECURE_BROWSER_XSS_FILTER = True
    X_FRAME_OPTIONS = "DENY"

    # HSTS settings
    SECURE_HSTS_SECONDS = 31536000  # 1 year
    SECURE_HSTS_INCLUDE_SUBDOMAINS = True
    SECURE_HSTS_PRELOAD = True
    SECURE_PROXY_SSL_HEADER = ("HTTP_X_FORWARDED_PROTO", "https")
    SECURE_SSL_REDIRECT = True
    SESSION_COOKIE_SECURE = True
    CSRF_COOKIE_SECURE = True


/r/djangolearning
https://redd.it/1jv1s9a

db.init_app(app) Errror

Hi I am a compleat Noob (in flask), i have an Error in my Program that says: TypeError: SQLAlchemy.init\_app() missing 1 required positional argument: 'app' and i dont know what is wrong ):


This is the code pls Help me:

from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from os import path

db = SQLAlchemy
DB_NAME = "database.db"

def create_app():
    app = Flask(__name__)
    app.config['SECRET_KEY'] = 'hjshjhdjah kjshkjdhjs'
    app.config['SQLALCHEMY_DATABASE_URI'] = f'sqlite:///{DB_NAME}'
    db.init_app(app) #this thing makes the problem

    from .views import views #thies are just website things
    from .auth import auth

    app.register_blueprint(views, url_prefix='/')
    app.register_blueprint(auth, url_prefix='/')

    from .models import User, Note #that are moduls for the data base

    with app.app_context():


/r/flask
https://redd.it/1kmg69c

Having trouble writing to .txt and CSV files while Flask is running.

So I am trying to write simple submission form text from a website to a text file. The form submits fine and I can even print out my data, but it won't write to a text or csv file for some reason. No errors, the file is just empty. I run the same snippit of code in another file that isn't running flask and the code works fine. It writes to the text file. I can even print out the form text and see it in the debug console; but it just won't write to a file. I feel like I'm in the twilight zone.

#this function should work, but it does'nt
def writetotext(data):
with open('DataBase.txt',mode='a') as database:
email=data'email'
subject=data'subject'
message=data'message'
print(f'\n{email},{subject},{message}')
file=database.write(f'\n{email},{subject},{message}')



/r/flask
https://redd.it/1on2o1l