Building custom template tags in Jinja2 is not an easy task. That used to be the case, which you will see below.

tl;dr: Give jinja2-simple-tags a try.

Why would you create a custom template tag?

From the docs:

By writing extensions you can add custom tags to Jinja. This …

Real-time form validation with Flask-Meld  

Flask-Meld now integrates with Flask-WTF to handle form validation.

What's the big deal? Real-time form validation without writing any Javascript!

Of course I wouldn't leave you hanging without a way to try it yourself! Here's a link to the demo

Building your form

While you …

Introducing a new way to build web applications: Flask-Meld  

Try the demo yourself

Before we dive in, I would like to give credit where credit is due. This extension was heavily inspired by the following projects and people:

• Phoenix LiveView the original inspiration!
• @calebporzio for his work on Laravel Livewire …

In the last article we learned how to set up and use a Digital Ocean Oauth app. Now that we understand how that works, let's make all of that hard work more accessible to the rest of the Flask community. Flask-Dance is an extension that is used to complete the …

The OAuth flow can be confusing the first time you do it. This article and example project should help you feel more comfortable specifically for people who would like to use OAuth with Digital Ocean.

The code for this application can be found at https://github.com/mikeabrahamsen/flask-digitalocean-oauth-example

Conveyor …

My first introduction to Flask was Miguel Grinberg's original Flask Megatutorial. After using Django as my framework of choice for several years. Miguel's simple use of Flask allowed me to see just far enough under the hood that I started understanding much more of the web stack, hidden in some …

One of the benefits of using Flask is it is straightforward to get an application up and running. When you are first starting, you can create your application with a single file. The structure of the application is left entirely up to the developer.

Starting with a single file application …

Currently Conveyor will install Python 3.6 when you create a server as 3.6 is the version that is used with Ubuntu 18. However, it would be great to have the ability to install more recent versions of Python and be able to use different versions depending on the …

When refactoring the new flow for creating a site the + New Site button was removed so there was only one option to add a site. If you already have a site with Conveyor we need to make sure the add site button is available.

To start I have written two …

This post will explain how to add Google reCAPTCHA to a Python Flask application using Flask-WTF.

The first thing you will need to do is get your SITE KEY and your SECRET KEY from Google reCAPTCHA Make sure to create a reCAPTCHA version 2 site. Version 3 takes much more …

Pythonic - an idiom used for the python programming language that encourages code readability while striving for an optimal solution to a problem.

This idiom drove a lot of decisions when building conveyor.dev

To try to make a simple solution that works for most applications.

No container orchestration, no docker …

Before you start

Before you get started with Conveyor you will need the following:

• A domain name
• A Github account
• Digital Ocean or Linode account

Create a Conveyor.dev account

To get started you will need to create an account on Conveyor.dev

When you log in for the first …

I found this tip on the Flask subreddit, such a simple solution to make sure you don't forget to add a @login_rquired to a route. You can enforce user login with Flask-Login by using the @before_request decorator.

@bp.before_request
@login_required
def handle_route_permissions():
    # just used to enforce login required on all …

Once you have your Github webhooks working you will want to add a bit of security to make sure that the requests are actually coming from Github. One way to do this is to verify the signature Github sends matches the digest of the message.

Here is an example of …

Once you have your Github app created you can start receiving webhooks when events occur.

If you want to test this locally you can use an ngrok.io address to route the request to your local computer. Instructions on how to do that can be found at https://developer.github …

Create a Github app to integrate with Github

Using a Github app is the preferred way integrate with Github. By creating a Github app you can give your users more granular control of what you have access to. By transitioning Conveyor.dev to use a Github app the level of …

Sometimes pages grow to a point that the need a little help in order to keep it intuitive for the user. I want to share one way that I have been able to keep pages organized and intuitive to the user by using a sidebar with Flask. No javascript involved …