Python Flask Authentication Tutorial - Learn Flask Login

Hey guys! Welcome back! In this video, I show you how to build a login authentication system using Flask and Python. We'll be using Flask-Login to build it.
If you don't know about Flask or if this is your first time using it, Flask is a Python web framework that is used to create web applications. Flask has a built-in login system that can be used to authenticate users. The login system in Flask is very simple and only requires a user to enter their username and password.
Mac Command - pip3 install flask flask_sqlalchemy flask_login flask_bcrypt flask_wtf wtforms email_validator
Windows Command - pip install flask flask_sqlalchemy flask_login flask_bcrypt flask_wtf wtforms email_validator
Code: github.com/arp...
My Website - arpanneupane.com
My GitHub: github.com/arp...
Official Flask-Login Docs - flask-login.re...
My Programming Gear :
Keyboard: amzn.to/42vXkxh
Laptop: amzn.to/3CkAP3W
Laptop Stand: amzn.to/3X116Oi
Desk: amzn.to/43wmIEt
Monitor: amzn.to/42BAaFH
Monitor Arm: amzn.to/3NR0APS
Chair: amzn.to/42vvKAn
Desk Mat/Mousepad: amzn.to/43AhKqj
Microphone: amzn.to/45RuQ43
Headphones: amzn.to/445sf4R
#Python // #Flask // #LearnToCode

[@ArpanNeupaneProductions]

For people wondering where the code is in this video, you can find it here: github.com/arpanneupane19/Python-Flask-Authentication-Tutorial

[@iancorrea3151]

Can i request a tutorial about React and Flask Authentication? Thank you.

[@k.c.9019]

That's not the same code. Code in github doesn't have at least check_password_hash part.

[@ArpanNeupaneProductions]

@@k.c.9019 Thank you for reminding me. I hadn’t added a repo for this app when the video was made and saw many people requesting it so I decided to make one this month. Thanks for reminding me though.

[@k.c.9019]

@@ArpanNeupaneProductions Thank you for your work :)

[@Jack__2]

​@@iancorrea3151 I am also making react + flask app have you make login and register page

[@HassanRaza-cb3mz]

I don't usually comment on videos, but WOW. This is the most simplest and most focused tutorial for this particular subject. You are doing great job man! loved the video.

[@davidk7212]

Straight to the point with no fluff, yet thorough and with every detail explained succinctly. And no cringey attempts at comedy. This is exactly what the world needs more of.

[@SanSha2100]

What people are taking hours and still not able to illustrate, your focused approach teaches it minimum time with maximum impact. Kudos to you and very well done.

[@philippkeller5882]

Such a great tutorial. I like that you focussed on the bare minimum, no styling, no fancy databases, no long explanations. That got me going with login and forms in Flask

[@wdblackout]

right! tutorial nowadays just focused on the number of minutes for the views.

[@ArpanNeupaneProductions]

Haha I appreciate it!

[@Vangsguard]

@@wdblackout You are aware that you can just... skip those parts of the video right? Also if you don't like long explanations you might want to find a different career. Understand why you do what you do is the most important in this field. Doing it is one thing, understanding why is what's hard. If not everyone could be a programmer with ChatGPT.

[@wdblackout]

@@Vangsguard necroposting. this is two years already and too late for a debate. you just have a kitkat, take a break alright?

[@alwinjames4777]

showing this error at 14:41 >>> from app import db Traceback (most recent call last): File "", line 1, in File "C:\Users\User\Desktop\flask-auth\app.py", line 5, in db = SQLAlchemy(app) File "C:\Users\User\AppData\Local\Programs\Python\Python39\lib\site-packages\flask_sqlalchemy\extension.py", line 219, in __init__ self.init_app(app) File "C:\Users\User\AppData\Local\Programs\Python\Python39\lib\site-packages\flask_sqlalchemy\extension.py", line 301, in init_app raise RuntimeError( RuntimeError: Either 'SQLALCHEMY_DATABASE_URI' or 'SQLALCHEMY_BINDS' must be set. can you please help me

[@person....4169]

lol, I got the same issue did you find a solution?

[@PranavMalleboyina]

@@person....4169 The solution would be to create the db object after you set the URI and the secret key values. I tried this and it worked fine.

[@21Gannu]

you made this so simple. kudos… I suggest making whole series on flask it will benefit many students…

[@ArpanNeupaneProductions]

Thank you!!

[@geoffreyfouvry6094]

On a scale of 10, you got 11.5... Just one thing: Don't forget the .decode('utf8') in the line............ hashed_password = bcrypt.generate_password_hash(form.password.data).decode('utf8')

[@Drinkyoghurt]

I'm having issues with it setting up the DB file. for some reason it won't take. If I add a create_tables function it creates one in instance, but then doesn't seem to access it. Every time I submit my form it just reloads instead of taking the data I submitted

[@rahulsumbly7310]

Hey, very nice and useful video 👍. Just one suggestion, make playlists on your channel for videos on same topic it will be easier for users to navigate videos on your channel

[@jspencer89yt]

Anyone viewing this in 2023 this process has changed some. So expect some errors follow the documentation for latest updates.

[@riteshkolate05]

Where is documentation????

[@rarisenpai]

I am now a new subscriber you make great content and am going to watch every video I can from now on😄

[@ArpanNeupaneProductions]

Welcome aboard!

[@BaoNguyendarkmatter820]

At 13:18, I had to put line 7 and 8 (appp.config) before db=SQLAl to resolve a runtime error.

[@danielfaran5783]

thanks for the info

[@OmPathare-h1o]

Really liked the video. This is my first flask project. Understood many basic concepts. Thank you. The code is working.

[@aleksahadzic9302]

For people who already know how to set up the flask app, you can start watching from 9:40

[@gregkrakow872]

I like the simplicity of your approach. The app contains just what is needed and it is explained all in less than 30 minutes. Is the code available for this project?

[@ArpanNeupaneProductions]

Thank you so much! The code is currently not available yet, I will make a GitHub repository for it.

[@kevinrodriguez-zk5kq]

Hi! I'm having the message error for Either SQLALCHEMY_DATABASE_URI nor SQLALCHEMY_BINDS is set after I try to import db. Is this something outside of this tutorial? I am unsure as to why it continues to pop up.

[@moazali4757]

You might want to move the creation of the db object after configuring the database URI. It will solve this problem. Here's how you can modify your code: app = Flask(__name__) app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///database.db' # Move the configuration here app.config['SECRET_KEY'] = 'thisisasecretkey' db = SQLAlchemy(app) # Initialize the db object after configuring the app bcrypt = Bcrypt(app) Copy this code, and replace with previous lines of code.

[@wimvangeyt3866]

put the db = SQLAlchemy(app) after the config statements

[@arnavghosh4242]

Great tutorial, but isn't it better to use UUID's instead of Incrementing Numbers for ID field?😄Great Tutorial, and I have Successfully Learnt Authentication in Flask in 26 mins.

[@khurshidbekkk2647]

Your explanation is so plain and understandable. Thank you very much. You have just earned another follower!

[@ammarbinmadi7175]

at 14:27 my Sqlite database file didn't contain any tables so i followed the following format #Unix/Mac (note the four leading slashes) sqlite:////absolute/path/to/foo.db #Windows (note 3 leading forward slashes and backslash escapes) sqlite:///C:\\absolute\\path\\to\\foo.db #Windows (alternative using raw string) r'sqlite:///C:\absolute\path\to\foo.db' in my Sqlite file link at line 7

[@EpicNerdify]

Hi sir, at 14:00 when i try to do import , i get this error ModuleNotFoundError: No module named 'flask', does anyone know of a fix for this? i have installed every necessary flask pip install modules

[@TranslatoreAI]

me too

[@selendivanloglu1932]

Hi Arpan, thanks for the tutorial, very simple and effective. I'm on minute 13.56 right now, and my terminal is giving me a runtime error though I don't know why. I followed the code you wrote exactly, but this "RuntimeError: Either 'SQLALCHEMY_DATABASE_URI' or 'SQLALCHEMY_BINDS' must be set." is showing up on my terminal. Do you know how I can solve this? Thanks so much

[@jeanlecigne4379]

pip3 uninstall flask_sqlalchemy and pip3 install flask-sqlalchemy==2.5.1because big changes with flask-sqlalchemy==3.0 sqlite db in memory not set as default in this version

[@omar_benaidy]

@@jeanlecigne4379 thank you so much you're a life saver

[@kylekelly7232]

@@jeanlecigne4379 just curious what you would need to do to use v3.0?

[@josikie]

@@kylekelly7232 Hi Kyle! We can initialize the db first. Only after adding configurations, do we use db.init_app(app) to bind the db to the app.

[@willisvensson]

lifesaver comment, appriciated. Thank you!!!

[@Oc3anWav3s]

Just found this video and I loved how well you described everything! You earned a subscriber. Could you possibly make a video trailing off this - when a user logs in with their username, it will display the dashboard based on their specific details?

[@ArpanNeupaneProductions]

Thank you for the compliment! When they log in, you can do something like this in the HTML file: {{ current_user.username }}, etc.

[@ArpanNeupaneProductions]

You can basically access the current_user object in Flask and use that to display certain details/properties about the current user that is logged in.

[@valeeswarank]

Nutshell explanation and simple and super mini project.

[@Andreasstanca95]

Amazing content but I get stuck at some point. when I want to db.create_all() in my terminal, I get the following error: RuntimeError: Working outside of application context. Any ideas how to solve this?

[@end_player4032]

i have the same problem

[@timewasterlee]

I‘ve watched a numbers of flask tutorials, but this one is the best one that express the core idea in such short time!!!

[@black_ninja1858]

I have a problem on 14:02 when typing from app import db I got: RuntimeError: Either 'SQLALCHEMY_DATABASE_URI' or 'SQLALCHEMY_BINDS' must be set. I' ve done everuthing same (working on Ubuntu) .I spent some time looking for solution, but couldn't find :((. Can anyone help please??

[@paritoshraikar4026]

try database and secret key commands before db=SQLAlchemy(app) and bcrypt=Bcrypt(app)..worked for me

[@leonardoloayza]

@@paritoshraikar4026 It worked!!!

[@lmoreno2103]

@@paritoshraikar4026 worked for me, had same issue. thanks!

[@jongolove6744]

The fact that you made this seem easy is actually impressive💡

[@progger1050]

What is {{hidden_tag}} error is say 1 positional argument required self

[@ArpanNeupaneProductions]

Can you share your code?

[@rodrigomarchi9755]

Great tutorial. I just wish you had a more comprehensive tutorial as well, creating a production ready app with more complexities involved.

[@ArpanNeupaneProductions]

Great suggestion!

[@arjunpukale3310]

very simple and up to the point ❤

[@progger1050]

I have a questions If I login I want to create a session but how to get the user name in the session because it is coming from the form

[@ArpanNeupaneProductions]

If you want to get the user’s name from the session, you can just do current_user.username.

[@RansbyJohan]

When I run your code i get this error, can you help? Traceback (most recent call last): File "/home/johan/Dokumenter/login/app.py", line 10, in db = SQLAlchemy(app) File "/usr/local/lib/python3.9/dist-packages/flask_sqlalchemy/extension.py", line 219, in __init__ self.init_app(app) File "/usr/local/lib/python3.9/dist-packages/flask_sqlalchemy/extension.py", line 307, in init_app raise RuntimeError( RuntimeError: Either 'SQLALCHEMY_DATABASE_URI' or 'SQLALCHEMY_BINDS' must be set. B

[@tinymicronano]

me too

[@Mackerr]

thank you for this, you saved my grade

[@susanadesoji671]

This is a great tutorial, very helpful

[@ArpanNeupaneProductions]

Thanks!

[@slc388]

when i type from app import db it shows error like name 'db' is not defined why it shows like that please reply me sir

[@ArpanNeupaneProductions]

Can you share the code?

[@milesthomas3317]

Really helpful, thanks so much.

[@aniketkadukar7772]

Man, You're awesome. Thanks!!

[@ArpanNeupaneProductions]

You’re welcome!

[@harrisonshu634]

Awesome straightforward tutorial thank you!

[@ArpanNeupaneProductions]

Glad it helped!

[@Cookie_Hub]

I get this Error: pls help Either 'SQLALCHEMY_DATABASE_URI' or 'SQLALCHEMY_BINDS' must be set. File "/home/miuka/Python/FlaskTest2/app.py", line 10, in db = SQLAlchemy(app)

[@aestedits4150]

Hi thanks for this great tutorial. I am having a problem, "database.db" is not working for me, I have installed SQL all extensions but the problem is same still. Could you please help.

[@baldoggie]

it is not working for me either

[@kamutabung511]

most simplest tutorial ever i watched, yet effective, super best tutorial

[@bapakkoding712]

I like this video, from this i learn more about how apache superset workflow. thank`s its should be good if there`s tutorial for flaskapp-jwt-extender. nice work.

[@okwuteizuchukwu7547]

Hello all, I get as far as 12:03 but then I find that I get this error 'RuntimeError: Either 'SQLALCHEMY_DATABASE_URI' or 'SQLALCHEMY_BINDS' must be set.' Can anyone help? (ps. compared to other tutorials on the topic this one is the best I have found so far. Thank you for taking the time to put it together)

[@saraimarte]

same im stuck there too

[@andremiruzzi8968]

Been following the tutorial up to the point where you run the .tables command , but for me it is returning nothing. i had to do the create_all() this way in order for it to work: >>> from app import app, db >>> app.app_context().push() >>> db.create_all() >>> exit() but when i check with the .tables i find nothing there

[@KS-ic4wv]

facing the same problem

[@andremiruzzi8968]

@@KS-ic4wv it seems that the version for flask alchemy changed a bit. I found a fix here however: kzbin.info/www/bejne/hKqUmGCNoJqhr68&ab_channel=PeterSchneider

[@1nicetyp431]

Thanks you saved my evening, simple but wonderful

[@AndreKaiqueDellIsola]

15:38 O erro "No module named 'flask'" indica que o módulo Flask não está instalado no seu ambiente Python atual. Para resolver isso, siga os passos abaixo: ### Passos para instalar o Flask 1. **Criar um ambiente virtual** (se ainda não tiver criado): ```bash python -m venv venv ``` 2. **Ativar o ambiente virtual**: - No Windows: ```bash venv\Scripts\activate ``` - No macOS/Linux: ```bash source venv/bin/activate ``` 3. **Instalar Flask e outras dependências**: ```bash pip install flask flask_sqlalchemy flask_login flask_wtf ``` 4. **Verificar a instalação**: - Você pode verificar se o Flask foi instalado corretamente executando: ```bash pip list ``` - Certifique-se de que `flask`, `flask_sqlalchemy`, `flask_login` e `flask_wtf` estejam listados. ### Reestruturando o projeto Certifique-se de que a estrutura do seu projeto está correta. Aqui está um exemplo: ``` my_flask_app/ │ ├── app.py ├── models.py ├── forms.py ├── templates/ │ ├── login.html │ ├── register.html │ └── home.html └── static/ └── styles.css ``` ### Arquivo `app.py` ```python from flask import Flask, render_template, redirect, url_for, flash from flask_sqlalchemy import SQLAlchemy from flask_login import LoginManager, UserMixin, login_user, login_required, logout_user, current_user from forms import LoginForm, RegisterForm from models import User, db app = Flask(__name__) app.config['SECRET_KEY'] = 'your_secret_key' app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///site.db' db.init_app(app) login_manager = LoginManager(app) login_manager.login_view = 'login' @login_manager.user_loader def load_user(user_id): return User.query.get(int(user_id)) @app.route('/') @app.route('/home') def home(): return render_template('home.html') @app.route('/login', methods=['GET', 'POST']) def login(): form = LoginForm() if form.validate_on_submit(): user = User.query.filter_by(email=form.email.data).first() if user and user.check_password(form.password.data): login_user(user, remember=form.remember.data) return redirect(url_for('home')) else: flash('Login Unsuccessful. Please check email and password', 'danger') return render_template('login.html', form=form) @app.route('/register', methods=['GET', 'POST']) def register(): form = RegisterForm() if form.validate_on_submit(): user = User(email=form.email.data, username=form.username.data) user.set_password(form.password.data) db.session.add(user) db.session.commit() flash('Your account has been created!', 'success') return redirect(url_for('login')) return render_template('register.html', form=form) @app.route('/logout') @login_required def logout(): logout_user() return redirect(url_for('home')) if __name__ == '__main__': with app.app_context(): db.create_all() app.run(debug=True) ``` ### Arquivo `models.py` ```python from flask_sqlalchemy import SQLAlchemy from flask_login import UserMixin from werkzeug.security import generate_password_hash, check_password_hash db = SQLAlchemy() class User(db.Model, UserMixin): id = db.Column(db.Integer, primary_key=True) username = db.Column(db.String(150), nullable=False, unique=True) email = db.Column(db.String(150), nullable=False, unique=True) password_hash = db.Column(db.String(256), nullable=False) def set_password(self, password): self.password_hash = generate_password_hash(password) def check_password(self, password): return check_password_hash(self.password_hash, password) ``` ### Arquivo `forms.py` ```python from flask_wtf import FlaskForm from wtforms import StringField, PasswordField, SubmitField, BooleanField from wtforms.validators import DataRequired, Length, Email, EqualTo class LoginForm(FlaskForm): email = StringField('Email', validators=[DataRequired(), Email()]) password = PasswordField('Password', validators=[DataRequired()]) remember = BooleanField('Remember Me') submit = SubmitField('Login') class RegisterForm(FlaskForm): username = StringField('Username', validators=[DataRequired(), Length(min=2, max=20)]) email = StringField('Email', validators=[DataRequired(), Email()]) password = PasswordField('Password', validators=[DataRequired()]) confirm_password = PasswordField('Confirm Password', validators=[DataRequired(), EqualTo('password')]) submit = SubmitField('Sign Up') ``` ### Verifique se todos os arquivos estão no mesmo diretório e executando o servidor Flask Certifique-se de que todos os arquivos estão no diretório correto e execute o servidor Flask novamente. Navegue até o diretório do seu projeto e execute: ```bash flask run ``` Se o Flask ainda não estiver encontrado, tente instalar o Flask explicitamente novamente e garantir que você está ativando o ambiente virtual corretamente: ```bash pip install flask ``` Certifique-se de que o comando `pip list` inclui `flask` na lista de pacotes instalados.

[@AndreKaiqueDellIsola]

14:08 from app import app, db with app.app_context(): db.create_all()

[@Onlyhousefr]

Great value tutorial, thank you so much !

[@loere]

There is a built in hash function in python called "hash" returns integer

[@MuhammadMuhsinYahya]

Very good explanation and well presented, thank you. But how about the styling the page

[@CSmediaFX]

Great tutorial btw, however when you testing the functionality of the code a the end, the Validation Error message was not displayed on the page. I typed out the code as i followed along and i got the same result for: if existing_user_username: raise ValidationError("Username already exists, Please enter a different Username") So looked at the docs for flask_wtf and apeneded the following to the registration.html: Register User Page Home Login {{ form.hidden_tag() }} {{ form.username }} {{ form.password }} {{ form.submit}} {% if form.username.errors %} {% for error in form.username.errors %} {{ error }} {% endfor %} {% endif %}

[@ArpanNeupaneProductions]

Yeah, I forgot to mention that in the video. Great job for doing your own research to fix an issue!

[@RonnieOchieng-u7z]

Bro you are highly talented with your age

[@MyselfGagan]

Hi , I Am "ValueError: Invalid salt" while validating the login inputs, I have tried everything from google but not able to resolve it, please help me out in this

[@joao.morossini]

Thank you! That was really helpful

[@atakankaraman4005]

hello, i got an error message when i import library as a "from flask_wtf import FlaskForm" i received an error. ImportError: cannot import name 'url_encode' from 'werkzeug'. i've installed all library from requirements.txt with same version my python version is 3.10. pycharm version is 2022.3.1. what is your python version could you please help me

[@dope166]

The validate_username function in register form, you haven’t called it anywhere in the app, how does it work? Is it called automatically?

[@Quaght]

Say I have 5 web pages but only one of them requires a login. Do I add @login_required only to the route to that page?

[@ArpanNeupaneProductions]

Yes

[@MuhammadRakhaAlmasah-s9h]

RuntimeError: Either 'SQLALCHEMY_DATABASE_URI' or 'SQLALCHEMY_BINDS' must be set. How to fix it ?

[@lzmkalos]

TIP: you must declare app.config['SQLALCHEMY_DATABASE_URI'], before db = SQLAlchemy(app);

[@MarkJohnson-zz2ne]

It would be better to zoom in a bit when editing.

[@eddie4249]

Awesome tutorial!

[@ArpanNeupaneProductions]

Thanks!

[@rangabharath4253]

Awesome as always 🙂

[@vedkhetle7318]

dosent work!

[@rodkafelipe6605]

watchout now: "Changed in version 3.0: No longer defaults to an in-memory SQLite database if not set. " Which throws runtime error, if SQLALCHEMY_DATABASE_URI is not set, right before the command db.createall()

[@CI30]

Hi, i'm getting this error "wtforms.validators, invalid syntax" line 7 how can I resolve it. TIA

[@ArpanNeupaneProductions]

Can you show me the code that you wrote?

[@RocketLR]

is it just me or did u forget to show the part where u filled in the forms action attribute? I cant find it where you put that info in..

[@ghobashi2000]

شكرا على هذا الفيديو المفيد والسهل في الفهم أيضا

[@KeesFluitman]

omg. im 35 and trying to get into IT, some basic Devops and programming and then I see you so perfectly explaining this. I wish i was 15 again. But Im trying to get it working with flask-ldap3 and flask-security as well. So I can use the groups as roles. Somehow got some annoying issues with that though. Are there actually still apps or websites that store user information on their on databases out there? Isnt everything Oauth these days, or backed by an ldap?

[@ArpanNeupaneProductions]

That depends on the auth system the website uses. OAuth is newer and is used if you want to avoid building your own system. This video was just for beginners to build their own system with Flask. Glad to hear the positive comments! Wishing you great luck for the upcoming career!! Good luck :)

[@KeesFluitman]

@@ArpanNeupaneProductions thanks. Im still a bit overwhelmed by the sheer amount of possibilities in flask. I have my own ldap backend with freeipa so im trying to retrieve the users there, authenticate them, store their username and group and then allow certain areas of my website. So users can comment on my blog posts, and admins can post etc. But it's getting quite complicated and sometimes some things magically stop working haha.

[@ritusikpusik]

When I'm trying to import db from app I'm getting ImportError: cannot import name 'db' from 'app'. Why is that so?

[@sabinaanibassabinaanibas]

Thank you very much for great tutorial, but I want to change design of login page. I've made my HTML file, but I don't know how to combine it with your code from login.html, because there is only {{form.username}} etc.. Can you please help mi with customizing that HTML file? Thank you in advance!

[@ArpanNeupaneProductions]

Sure! You would basically make a normal HTML file in your templates directory and then you'd just render it in your Python file. Then you can add the {{form.username}}, {{form.password}}, etc as well and you can style it however you'd like.

[@its_just_me9]

its a great tuturial but i am lost at the classes of the form can we do this without them ?? can we just type it in html ??

[@kurty85]

I did all the steps and they worked perfect but I am having an issue adding more routes to the home page for "about, cloud, etc". The routes simply do not appear when added. Anyone experience this?

[@LukeEdet]

How did you start up ya terminal after creating the database coz my terminal isn't working was yours

[@LukeEdet]

Pls can someone reply me based on this issue pls

[@TheNishi42]

getting error while doing registration TypeError: generate_password_hash() missing 1 required positional argument: 'password'

[@azpycoder3337]

Dear Arpan Neupane, can you provide link to text version of this tutorial?

[@ArpanNeupaneProductions]

Hello, unfortunately I don’t have a text version for this tutorial.

[@stanpedrieta105]

How do you show the validationerror message if the user already exist?

[@getoverhere4465]

24:49 but where does the session get the user id from ????????

[@ArpanNeupaneProductions]

It is stored within Flask-Login

[@casualcomputer6544]

Great video. A question: after I ran "db.create_all()" and checked for ".tables", I noticed that "user" is not there. What do you think is wrong with my execution?

[@casualcomputer6544]

Actually, I made a typo in earlier codes: I should have copied "SQLALCHEMY_DATABASE_URI" instead of "SQLALCHEMY_DATABASE_URL" Problem solved. Thanks!

[@ArpanNeupaneProductions]

@@casualcomputer6544 Sweet!

[@casualcomputer6544]

@@ArpanNeupaneProductions Very interesting content! Just curious, do you have some resources on the deployment of python web apps that require login? If find your content super helpful!

[@ArpanNeupaneProductions]

@@casualcomputer6544 Yeah! I have a video on how to deploy a Flask app to Heroku which can be found here: kzbin.info/www/bejne/emOqfYmlnqqNr6c

[@zsirothehero4330]

I have the same problem but it doesnt work even tho my URI is right. What is wrong?

[@tinymicronano]

How to handle the validate_username and show the message in HTML?

[@work3644]

How to connect the database to MySQL / AWS database?

[@peya02]

What steps should I do to deploy the app on a hosting? I'm trying and I get internal server error. You don't like something about the login part.

[@martezcarmouche3179]

HEELLLPMy flask isn't working. When I hit run it gives me error "not recgnized as the name of cmdlet....". Can some one help!

[@pent9157]

really helpful thank you

[@ArpanNeupaneProductions]

you're welcome!

[@442s_port]

don't have an account Register I use this for the redirecting instead👆 of what you wrote cause I couldn't see it, please What is the difference be that it also work😒

[@azyjmexcuseokstop924]

shouldnt the password be hashed from the client side ? as it is, the password still goes on the network uncrypted, and is only crypted when it enters the post function, server side, no ?

[@jonathan3488]

Hi after some trial and error it finally worked for me. However, I didn't understand how do I fetch the current user from the templates after the login. I see that the load_user() method is invoked every time I load a page, but I have no idea what to do.

[@ArpanNeupaneProductions]

You can do {{current_user.}} to get data for the current user. Ex: {{current_user.username}}

[@jonathan3488]

@@ArpanNeupaneProductions Oh thanks!

[@harshsharan4127]

what is your version of flask and werkzeug??

[@magniymstudio8048]

Thank you for your tutorial However, I need some help with the code. Until the moment when I typed: "nullabe=False", my code was working. After that my error is: TypeError: Column() got an unexpected keyword argument 'nullable' And I have a warning "Unexpected argument " for nullabe=False How do people cope with such error? The code is the same, but it is not starting anymore I am using PyCharm and python 3.9

[@ArpanNeupaneProductions]

You typed “nullabe” instead of “nullable”

[@magniymstudio8048]

@@ArpanNeupaneProductions Sorry, I misstyped the word in the comment The line looks like this: username = db.Column(db.String(20), nullable=False)

[@ArpanNeupaneProductions]

@@magniymstudio8048 Looks good to me

[@dabbasthegreat]

23:35 - bookmarking backup for what I have done so far

[@ospfpacket]

Hey Arpan, Absolutely great content! Thank you!!! At roughly 14 minutes, you import db from app. I must be missing something, because when I run that, it just tells me there is no module named app.... "from app import db" If I am following correctly, I need to do that step to actually create the database and table. Any insight you can provide, please?

[@ospfpacket]

I finally found another comment dealing with this. Importing the actual filename, not arbitrary 'app'. Should have caught that. Great stuff here. Thank you!

[@binh]

@@ospfpacket hi! can you give an example of the actual filename?

[@person....4169]

@@ospfpacket could you explain more?

[@PrashantSingh-pw1ze]

@@binh see it's like this import it using your file name, don't use the one that he has used like my file name is host.py so it goes like this -- from host import db so in general it looks like this -- from "file-name" import db

[@PrashantSingh-pw1ze]

@@person....4169 see it's like this import it using your file name, don't use the one that he has used like my file name is host.py so it goes like this -- from host import db so in general it looks like this -- from "file-name" import db

[@neuralclass]

Nice tutorial!

[@astorgadexterpelaez3502]

i cant create tables in my database.db

[@georgejuarez660]

Nice video, but I would like to know one thing. I want the system to generate an error message (which is visible on the site) when the user in the registration puts the same email. Here I say how can I do?

[@christophechouinard7619]

Daaaaaammmmmm, he types FAST

[@ArpanNeupaneProductions]

Haha

[@christiannahas2142]

is it possible to add in the def register(): function a connection, cursor, and cursor.execute(INSERT...) to save the data entered in the register into a sqlite3 data base that is already created? Because when i tried that the data was not saving in the database.

[@Unwired182]

Thanks a lot for the video very helpful and well explained! I having an issue with url_for, when signing up its not taking me to login, when login in its not taking me to dashboard, etc. Do you know why could that be? Thanks!

[@ArpanNeupaneProductions]

Can you share the code ?

[@Ahdem897]

@@ArpanNeupaneProductions having the same problem, any luck with it?

[@sajidayaz4410]

How can we add styling in forms?

[@pythoncodecrafters612]

Very helpful

[@pascalowilly2653]

Simple and effective, thanks

[@ritikthakur6270]

Hi Great tutorial. How to restructure the code in different directories ?

[@Kennethlumor]

Sir please and please help me do a video on how to add a search 🔎 systems to the flask app 🔎. cause I search for this request on KZbin but didn't get any

[@ArpanNeupaneProductions]

If you'd like to create a search engine, then I'd recommend checking this link out: dev.to/itachiuchiha/using-elasticsearch-with-python-and-flask-2i0e If you'd like to just build a search feature to search users, you can create a form on your page and when that form is submitted, you can get the fields of that form and query the User table and see if a user with that username exists or not. If they exist, you can redirect to a user's profile, and if they don't exist, you can flash a message stating that they do not exist.

[@Kennethlumor]

@@ArpanNeupaneProductions ok bro sounds good but to be frank I followed that but don't really understand.. And about your second statement I just want to use it to search 🔎 for either specific user or users that's all

[@Kennethlumor]

So please if you can do the video I will love it paa