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GraphQL subscriptions with Elixir and Absinthe

Here are some notes on WebSockets-based Absinthe GraphQL subscriptions. A basic setup and familiarity with regular queries and mutations is assumed.

Making a Ruby executable with ruby-packer

You can make a single executable from your gem or even a Rails application. I just tried ruby-packer and it works as promised.

InvoicePrinter 2.0

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.

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.

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.