Open Source Status Update – July 2020

In July I went on holidays and had quite a busy month at my day job but nevertheless I’ve managed to push things forward. Here’s a summary of what happened!

New dry-validation releases

We’ve had two bug-fix releases of dry-validation. Just like in case of a couple of previous releases, there were a bunch of really nice PRs from contributors which is lovely 😄

In 1.5.3 I’ve fixed a new bug that was discovered recently where using key? helper inside a rule would crash in case of a deeply nested data structure that has nested arrays. In general, even after few years of development we keep seeing bugs related to complex data structures. I always need to remind myself that the number of use cases is gigantic and it’s going to take a while until we see fewer (or even no) bug reports similar to the one I mentioned.

It’s worth to mention that dry-validation and dry-schema have been created to make it trivial to validate complex data structures. For me, this was one of the biggest motivations back in 2015. I think we’ve come a long, long way since then and existing functionality, despite seeing some bugs every now and then, is already extremely useful and valuable.

The second bug-fix release was 1.5.4 where I’ve fixed another bug related to checking for “base errors”, which are errors not associated with a specific key. This one was a major 🤦🏻‍♂️ moment for me, because it turned out a related spec had a syntax problem where a spec example was accidentally nested inside a let statement. This made the spec pass with no warnings or crashes. I guess it’s something that RSpec could catch and trigger a warning.

dry-rails 0.2.0

I finally managed to resolve problems with some flaky specs! We’re targeting both Rails ~5.2 and ~6.0 and because of this, the spec setup is a bit complex. Running specs in isolation is tricky due to the global state that is being changed. Setting/resetting things is essential and sometimes a specific order of execution may leave the suite runtime in an unexpected state. This is exactly what happened in this case where I had to ensure that one of the configuration settings gets reset to the original state.

Apart from fixing spec suite stability, this release brought a nice new feature! Thanks to diegotoral you can now configure import constant name, which is really cool:

# config/initializers/system.rb
Dry::Rails.container do
  config.auto_inject_constant = "Inject"
end

# then in your component classes
class DoSomething
  include Inject[:logger]
end

This release also includes a couple of bug fixes from jandudulski and gotar – thank you! ❤

Hanami 2.0

I’ve been making myself more involved in the process through my screencasts recently. I wanted to record part 2 of my “Exploring Hanami 2.0 application template” mini-series and the original plan was to show writing specs for the controller/view layer. My initial attempt allowed me to discover a couple of issues with session and flash handling, so I postponed this episode. It was really awesome to experience how controllers and views work though. You can check out Tim’s OSS update where he writes about the recent controller/view work.

Here’s the episode that I eventually recorded, where I talk about component loading through dry-system and the test setup in general:

Current month

OK that’s what I have as part of the July update! In August, I’ll be working more on rom 6.0.0. There’s an ongoing discussion within the Hanami team about rom + hanami-model and we should have some exciting news for you soon, so stay tuned 😄

Stay safe and healthy my friends!

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