InvoicePrinter is intentionally small and straight-forward library, command line client, and server to make PDF invoices in no time. Version 2.0 includes buyer/seller boxes simplification, decoupling server from the library, offering sample TTY fonts as an add-on and official Docker support.
Continue reading “InvoicePrinter 2.0”Testing Phoenix custom error pages
A short post on using assert_error_sent to test custom error responses on status code, response headers, and body. And when it doesn’t work.
Continue reading “Testing Phoenix custom error pages”Automating tasks and improving developer workflow with pre-commit git hooks
Probably the most usual git workflow is adding changes to the staging area, committing them, and pushing them to the remote repository. Depending on the project we are working on there are some things that we should be checking, validating or generating before heading for the commit. That’s where pre-commit hooks come in.
Continue reading “Automating tasks and improving developer workflow with pre-commit git hooks”Phoenix CSRF protection in HTML forms, React forms, and APIs
Let’s see how Phoenix implements CSRF for standard HTML multipart forms and how to use CSRF tokens outside these forms in React forms or API calls.
Continue reading “Phoenix CSRF protection in HTML forms, React forms, and APIs”Basic HTTP authentication in Elixir/Phoenix
Let’s look on what HTTP Basic authentication is and how to implement and test the HTTP Basic authentication in a Phoenix web application.
Continue reading “Basic HTTP authentication in Elixir/Phoenix”Rails handles large number of nested routes better than Sinatra
Jeremy Evans (of Roda and Sequel fame) created an interesting benchmark comparing memory and runtime performance of large number of routes (up to 10000) in various Ruby web frameworks. I was immediately interested and ran it to get the numbers.
Continue reading “Rails handles large number of nested routes better than Sinatra”Displaying, downloading and streaming files with Active Storage
Here is a quick’n’dirty cheat sheet for basic Active Storage actions.
Continue reading “Displaying, downloading and streaming files with Active Storage”How fast is Ruby 2.5, 2.6 and 2.6 –jit in generating Prawn PDFs
Takashi Kokubun (known as k0kubun), a Ruby JIT committer, asked the community for more benchmarks on upcoming Ruby 2.6 JIT. I put together one for generating PDF documents with InvoicePrinter (based on Prawn). Continue reading “How fast is Ruby 2.5, 2.6 and 2.6 –jit in generating Prawn PDFs”
Taking Stimulus.js for a ride
Stimulus.js is one of the new front-end framework on the market. It’s goal is to be a modest JavaScript framework for the HTML you already have, which makes it ideal as an alternative to jQuery or framework-less JavaScript. Let’s see how it feels to replace VanillaJS with Stimulus.js on one concrete example. Continue reading “Taking Stimulus.js for a ride”
Building auto login for fast Rails development with Sorcery
Login as various users during development can become pretty annoying especially since it’s very difficult to remember all of the passwords across users or apps. If your app authentication happen to be built with Sorcery here’s is a very easy and straightforward way how to implement auto login. Continue reading “Building auto login for fast Rails development with Sorcery”