Ruby on Rails 5.1.3 RC3 available now

Third released candidate for Ruby on Rails 5.1.3 released
01 August 2017   1265
Ruby on Rails

Framework written in the Ruby programming language

Good news for RoR developers. New 5.1.3 release candidate 3rd version has been released.


List of changes for every gem:

  • Active Support
    • Fix modulo operations involving durations
      Rails 5.1 introduce an ActiveSupport::Duration::Scalar class as a wrapper around a numeric value as a way of ensuring a duration was the outcome of an expression. However the implementation was missing support for modulo operations. This support has now been added and should result in a duration being returned from expressions involving modulo operations.
      Prior to Rails 5.1:
      5.minutes % 2.minutes
      => 60


      5.minutes % 2.minutes
      => 1 minute
    • Fix division where a duration is the denominator
      PR #29163 introduced a change in behavior when a duration was the denominator in a calculation - this was incorrect as dividing by a duration should always return a Numeric. The behavior of previous versions of Rails has been restored.

As always, you can view whole list of changes at GitHub

If no regressions will be found, final release expected on Thursday, August 3, 2017. Developers ask everyone who will face any issues, to open a GitHub issue and mention @kaspth in order to developers fix it as soon as possible. 


Feel free to use this checksum in order to check version of your gem 

$ shasum -a 256 *-5.1.3.rc3.gem
f1b9758a78543bb27f65946a65a94e803140787b781f24983c696d89315685ea  actioncable-5.1.3.rc3.gem
8c57af610a7bac0cd91c0b09a0df2f66575ddb20204342b98d28bd6d051578b0  actionmailer-5.1.3.rc3.gem
9e69dcef628dbe12b5937a368e55ac79b71b38261d4187465200352d5278572d  actionpack-5.1.3.rc3.gem
d93ac77d4d6d2fa468a7407fda4088c9ca975aa00e78c18dd2b71e398af3b3dd  actionview-5.1.3.rc3.gem
2d0410f1a279b27e4bacddca4a8bc1f88c0e8c18429751370be8d41fb630cba9  activejob-5.1.3.rc3.gem
987567e336267497cb9222e4e689f58bfd06e9829071ae32d65b9a291fb0e8b3  activemodel-5.1.3.rc3.gem
159c9d330cec1ac9a92c9e0c68f0f088b4273f0ba163c3159f4a7369d9948229  activerecord-5.1.3.rc3.gem
6d4320c2e93e9f6239438cf7886b1111956b5d72cb5a7026402fa29021ae571f  activesupport-5.1.3.rc3.gem
f3551c5eec9649bc225552e0ed8ecee6dac9f4f97ca13e78bf018e36385852e8  rails-5.1.3.rc3.gem
59669b8098787c077b76642804a1543cdca8fabafabad7bbce74622508f79a3d  railties-5.1.3.rc3.gem


Ruby Meditation #22 in Dnipro

Meditation will be held on May 19, at Parle, Troitska St, 21 g, Dnipro
27 April 2018   533

On Ruby Meditation #22 you will hear about helpful tools and gems for building Slack apps, examples how to build functional architecture with ruby, which place takes Ruby on Rails among alternatives in 2018 and much more.

Come and get your portion of good mood, knowledge, professional communication and tasty lunch :)

Share your positive experience and best practices on this Ruby Meditation #22. If you have any work issues you cannot solve, our community will gladly help you to find the best way out in live discussion at Lightning talks session. You may also try yourself as a speaker with a short 5-10 mins talk. Fill in this form.


Anna Shcherbinina

Topic: "Docker + GPU. Not about mining."

Anna Shcherbinina
Anna Shcherbinina

Just before Christmas we launched a new body-measurement feature for our project. A person goes into the 3D booth, gets scanned, and the body-measurements are calculated with the 3D scan data. We couldn't avoid using a GPU with these calculations.

How to install this branch of processing into our elegant scaling pipeline? When you're dealing with 3D scans you should remember two things: it's expensive and time-consuming. By the way, its workload fluctuates throughout the days. The easiest solution for us was to use Docker.

This speech is not about mining, but the most helpful articles for us were ones such as "Building your own mining farm". That's because we use quite a similar infrastructure.

GPU, Docker, scaling. What we achieved, where we failed, and what it became of it in the end is all included in my speech.

Anna Shcherbinina

Head of Web, Artec3D, Luxembourg

Kirill Shevchenko

Topic: "Building Slack apps with Ruby."

Kirill Shevchenko
Kirill Shevchenko

Overview of Slack APIs. Their features, restrictions, and bottlenecks. Which API is right for you? Helpful tools and gems for building Slack apps.

Kirill Shevchenko

Ruby/JS Developer

Valentine Ostakh

Topic: "Functional objects in Ruby: new horizons "

Valentine Ostakh
Valentine Ostakh

Overview of functional programming concepts.  What is functional objects. Examples how to build functional architecture with ruby.

Valentine Ostakh

Ruby/JS Developer

Leonid Shevtsov

Topic: "A polyglot's view of Ruby on Rails"

Leonid Shevtsov
Leonid Shevtsov

Nowadays, it's hip to switch from Rails to other languages and frameworks. Leonid, too, has abandoned Rails, played the field a bit, and has come around to occasionally but consistently picking Rails for some projects. What's the modern reason to use Rails? What are the strengths of Ruby and Rails and how to build upon them? When you should really jump to some other platform? Let's answer these questions in a true Ruby meditation.

Leonid Shevtsov

Systems Architect

Oleksii Dashkevych

Topic: "Project development - preparing hell dish together"

Oleksii Dashkevych
Oleksii Dashkevych

The recipe is averaged, because of many variations. We take some Ruby code and add Rails magic, Postgresql on top. Add Docker for viscosity. Then put this on AWS EBS pan and start frying. It's all roasted until burning deadlines and generously watered with bugs, serves to the customer. They start eating. Eat and whisper: “This is an awesome product!”. At the same time, he forehead is sweating. Kindly offer to fix bugs, but we refuse and put them in JIRA. Do I need to talk about what kind of feedback comes then? Tasks with such recipes, that double estimated.

Oleksii Dashkevych

Ruby/JS Developer

Thanks to the sponsors: Ruby Garage, Railsware, Aejis.

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