Skip to content

Instantly share code, notes, and snippets.

Avatar

Steven Harman stevenharman

View GitHub Profile
@stevenharman
stevenharman / restart-network-services
Created Jun 16, 2020
Restart Active Network Services on your Mac. You know, for the VPN!
View restart-network-services
#! /usr/bin/env bash
# shellcheck disable=SC2059
set -euo pipefail
# Toggle all currently 'Active' network servcies (e.g., Wi-Fi, Ethernet
# connections, etc...) to "restart" them. We'll ignore any already 'Disabled'
# services, and toggle all of the others to 'Disabled' and then back to
# 'Enabled'. This has been found helpful when your VPN won't re-connect after
# undocking and re-docking your MacBook, for example.
@stevenharman
stevenharman / format-ruby
Created Mar 19, 2020
Run `standardrb --fix` as a git pre-commit hook. NOTE: this assumes `gem "standard"` is in your Gemfile
View format-ruby
#!/bin/sh
# This file is `.git/hooks/format-ruby` and it has been `chmod +x`'d
# Assumption: https://github.com/testdouble/standard is in your Gemfile
set -e
rubyfiles=$(git diff --cached --name-only --diff-filter=ACM "*.rb" "*.rake" "Gemfile" "Rakefile" | tr '\n' ' ')
[ -z "$rubyfiles" ] && exit 0
# Standardize all ruby files
@stevenharman
stevenharman / 00_Rails-binstubs-vs-Bundler-binstubs.md
Last active Nov 19, 2019
Rails' binstubs vs. Bundler binstubs - incompatibility and breaking changes, maybe?
View 00_Rails-binstubs-vs-Bundler-binstubs.md

Rails' binstubs vs. Bundler binstubs

There's an incompatibility in the Rails vs Bundler-generated bin/bundle binstub. Futher, other Bundler-generated binstubs (e.g., bin/rspec) generated by older versions of Bundler don't play well with those generated by Bundler v1.16.

The Binstubs and versions.

bin/rspec

The older rspec-old.rb was generated by an older version of Bundler.

@stevenharman
stevenharman / 00_Heroku-Release-Phase-Review-Apps-Rails_README.md
Last active Oct 16, 2020
Heroku Release Phase script for managing Rails DB migrations, and playing nice with Review Apps and postdeploy scripts
View 00_Heroku-Release-Phase-Review-Apps-Rails_README.md

Heroku Release Phase + Review Apps + Rails

This is a simplified, but fairly thorough, set of scripts and configuration to enable Heroku Release Phase for Rails apps. Further, this particular set up plays nicely with Heroku Review Apps in that the release phase script will:

  1. Fail, loudly, if the DB does not yet exist.
  2. Load the DB schema if the current schema version (as determined by bin/rails db:version) is 0.
  3. Run DB migrations otherwise.

For a "normal" app that usually means it will run the DB migrations.

@stevenharman
stevenharman / i18n_helpers.rb
Last active Sep 26, 2017
Loading I18n translation files outside of Rails (for example, as part of an isolated/non-Rails spec)
View i18n_helpers.rb
# frozen_string_literal: true
module I18nHelpers
def self.included(_mod)
locale_dir = Pathname.new(__dir__) + '../../config/locales/'
[:en].each do |locale|
locale_file = locale_dir + "#{locale}.yml"
I18n.backend.store_translations(locale, YAML.load_file(locale_file.open)[String(locale)])
end
end
@stevenharman
stevenharman / heroku_deploy.sh
Last active Jun 8, 2017
A reasonable, and admittedly naïve, attempt at an automated Rails + CircleCI + Heroku deploy script. 🐉 THERE BE DRAGONS! 🐲
View heroku_deploy.sh
#!/usr/bin/env bash
#
# Usage: bin/heroku_deploy <heroku-app-name> [git-treeish : default=HEAD]
. ./shell_colors
set -euo pipefail
app_name=$1
app_remote=$app_name
@stevenharman
stevenharman / _view_model.rb
Last active May 24, 2017
A Lo-Fi View Model/Presenter Base Class for Rails Apps
View _view_model.rb
# app/model/view/view_model.rb
# A base class for other view models (a.k.a., presenters)
module View
class ViewModel < SimpleDelegator
BUILD_DEFAULT_CONTEXT = -> { View::DefaultViewContext.new }
def initialize(model, view_context: BUILD_DEFAULT_CONTEXT.call)
@view_context = view_context
super(model)
end
@stevenharman
stevenharman / pre-commit.sh
Last active Feb 27, 2018
A Git Pre-Commit hook to run the Rubocop static code analyzer. I'm not saying this is a Good Idea™. Use at your own risk. If it breaks, feel free to keep both pieces.
View pre-commit.sh
#!/usr/bin/env bash
set -eu
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
NO_COLOR='\033[0m'
CLEAR_LINE='\r\033[K'
@stevenharman
stevenharman / rerun-sidekiq.sh
Created May 11, 2016
Use rerun to restart the Sidekiq server, based on your Profile, when a file changes.
View rerun-sidekiq.sh
rerun --background --dir app,config,db,lib --pattern '{**/*.rb}' -- $(grep 'worker: ' Procfile | sed 's/worker: //')
@stevenharman
stevenharman / has_one_of_a_has_many.rb
Created Jan 13, 2016
Trying to avoid an N+1 query when we only want the first record of an ordered ActiveRecord association.
View has_one_of_a_has_many.rb
class Organization < ActiveRecord::Base
has_many :people, dependent: :destroy, inverse_of: :organization
has_many :locations, dependent: :destroy
has_many :activity_items, -> { order(last_activity_at: :desc) }, dependent: :destroy
has_one :last_activity, -> { order(last_activity_at: :desc) }, class_name: 'ActivityItem'
end
class ActivityItem < ActiveRecord::Base
belongs_to :organization
belongs_to :user
You can’t perform that action at this time.