| Commands | Actions |
|---|---|
| Basics | --- |
heroku update |
Update comman-line tool |
heroku help |
Help |
| Get started | --- |
heroku create --stack cedar [<appname>] |
Create app |
git push heroku master |
Deploy app |
AlexB52
/ heroku_cheatsheet.md
Last active
January 16, 2017 06:10
AlexB52
/ fb_sdk_turbolinks.md
Last active
March 21, 2017 00:13
Implementing Facebook SDK with Turbolinks
# /source/layouts/layout.erb
<body class="<%= page_classes %>">
<%= yield %>
<div id='permanent' data-turbolinks-permanent></div>
</body>function FBInit() {
AlexB52
/ timezone-do.rb
Last active
September 7, 2020 22:02
— forked from mphalliday/timezone-do.rb
Rails timezone cheat sheet do's and don'ts, from https://www.varvet.com/blog/working-with-time-zones-in-ruby-on-rails/
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| 2.hours.ago # => Fri, 02 Mar 2012 20:04:47 JST +09:00 | |
| 1.day.from_now # => Fri, 03 Mar 2012 22:04:47 JST +09:00 | |
| Date.today.to_time_in_current_zone # => Fri, 02 Mar 2012 22:04:47 JST +09:00 | |
| Date.current # => Fri, 02 Mar | |
| Time.zone.parse("2012-03-02 16:05:37") # => Fri, 02 Mar 2012 16:05:37 JST +09:00 | |
| Time.zone.now # => Fri, 02 Mar 2012 22:04:47 JST +09:00 | |
| Time.current # Same thing but shorter. (Thank you Lukas Sarnacki pointing this out.) | |
| Time.zone.today # If you really can't have a Time or DateTime for some reason | |
| Time.zone.now.utc.iso8601 # When supliyng an API (you can actually skip .zone here, but I find it better to always use it, than miss it when it's needed) | |
| Time.strptime(time_string, '%Y-%m-%dT%H:%M:%S%z').in_time_zone(Time.zone) # If you can't use Time#parse |
Resources:
- https://www.rubyguides.com/2018/12/ruby-system/
- https://medium.com/zendesk-engineering/running-a-child-process-in-ruby-properly-febd0a2b6ec8
- https://stackoverflow.com/questions/29845778/starting-a-process-and-killing-it-from-ruby-on-rails-app-without-leaving-zombie
- Executing and killing ruby parallel background jobs
This gist illustrates the full spec suite of the example used in Testing ActiveRecord Concerns
Copy the testing-concerns.rb file and run rspec testing-concerns.rb
The output should look something like
... bundling ...
AlexB52
/ list_with_enumerable.rb
Created
February 1, 2023 00:48
Difference between Enumerable and Grizzly::Enumerable
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| class List | |
| include Enumerable | |
| attr_reader :items | |
| def initialize(items) | |
| @items = items | |
| end | |
| def a_thing_to_do |
AlexB52
/ uniquely_generated_code.rb
Last active
March 8, 2024 05:32
How to secure a unique random code in Rails without hitting a race condition
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| # Made as an answer to the question is rails forums | |
| # https://discuss.rubyonrails.org/t/how-would-you-handle-gracefully-validating-a-generated-unique-code-until-its-guaranteed-to-be-valid/84919/9 | |
| require "bundler/inline" | |
| gemfile(true) do | |
| source "https://rubygems.org" | |
| gem "rails" | |
| gem "sqlite3" |
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| require "bundler/inline" | |
| gemfile do | |
| gem "rails" | |
| gem "sqlite3" | |
| gem "debug" | |
| end | |
| require "debug" | |
| require "sqlite3" |