0BSD License
Copyright (C) 2024 by Max Chernyak
Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted.
THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
Date
August 11, 2024
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Good shell script template
The article Shell Script Best Practices (also saved in my History Book app) has a great template/explanation on how to write shell scripts. Code
Dynamic Module Snippet for Ruby
If you like making dynamic modules (the kind where you can do include MyModule.with_argument('foo')), then these 6 lines of code make writing them
A way to enforce contracts in Portrayal rubygem
portrayal code, portrayal gem New way (based on version 0.9.0): https://gist.github.com/maxim/4dc1765d9f81ac849325d166d14d2dfa Blog post:
Camelize JSON keys in Rails
Works well with portrayal, and narrative Rails app design. Add to your lib/camelize_json_keys.rb, then require and use as needed. Code snippets in
Find out RAM timings (like CAS) and manufacturer on Ubuntu
I honestly don’t know how this works, but got it from this SO answer. (The only one that worked for me.) P.S. Probably the same on Debian. Code
Compiling Go binary for Linux when on a Mac with Apple Silicon
Code snippets in this post are covered by 0BSD License
Helper for creating table and model in Rails tests
Here’s a simple method that you can throw into your test_helper.rb (or wherever helpers go in your test framework) that works correctly as of Rails
Assertion assert_enqueued_email_with with matcher support
I made a PR into Rails to add matcher support for assert_enqueued_email_with. Until that PR is merged, here’s a custom assertion
Custom Puma executable for a Ruby app
Sometimes I don’t like having to create required files and directories. This executable can serve your app via puma without having to create
GemPatch: monkeypatch rubygems responsibly
If you must extend or change a gem’s functionality, it’s a good idea to make sure that your change won’t break with the next update. There isn’t
Install command line tools on MacOS
Code snippets in this post are covered by 0BSD License
Preferences for Rubocop ruby formatting
Canonical place for my up-to-date rubocop settings now lives in narrative Rails template repo. Code snippets in this post are covered by 0BSD License
Print Rails db schema or structure
These simple bash functions let you conveniently see schemas of your Rails models by printing them from schema.rb or structure.sql files. schema
Procfile.dev docker postgres
Start postgres in docker as a process in Procfile.dev Code snippets in this post are covered by 0BSD License
Rclone tips and tricks
On Linux (Ubuntu in my case), if Radarr/Sonarr apps are controlled by docker compose, hooked into an Rclone mount, and started with systemd units,
Ruby barewords are insidious
The problem with ruby barewords is that you cannot tell by looking at them what’s going on in them. They hide whether something returns a stored
SaveIf concern for Rails optimistic locking without lock_version
I wrote a proposal for Rails to implement an optimistic locking feature that doesn’t require lock_version column. There are some use cases where
Serve static files in Rails
This shows a way to mount a directory from which Rails will serve static files. By default, path/ will serve index.html if present. Code snippets in
How my LaunchD demon was setup
I switched to crontab now, and it seems to work much better, but before I was trying to run periodic job with this daemon setup. From
Support rails generator testing in Rspec
This goes into spec/support/generator_specs_support.rb: In spec/rails_helper.rb add the following: Specs should go into
Underscore ruby strings
Code snippets in this post are covered by 0BSD License
Camelize (camel case) ruby string
First letter: upper First letter: lower See also: Underscore ruby strings Code snippets in this post are covered by 0BSD License
Iterate over sorted enumerables preserving order
Better optimized, no indexes Code snippets in this post are covered by 0BSD License
Working with systemd units
Add new systemd service (will symlink your file): Remove existing systemd service (will remove symlinked files): Reload after changing your
Inspect and install a deb package
Check meta info about a package: List files the package will create: Extract deb package into a local folder: Install the package with dependencies:
Transferring files over ssh with scp
Upload: Download: Note: add flag -C to compress files. Code snippets in this post are covered by 0BSD License
Time Boolean
If you like storing timestamps for your booleans, throw this snippet into your ApplicationRecord for a quick win. Let’s say your user can be