My Rails note

Tips

Rails tips

• 📚 Ruby on Rails API
• 📚 Rails Guide
  • 📚 Rails Guid Edge
  • 📚 Rails Guid Japanese edition
• 💡 force stop rails server
  • kill -9 $(cat tmp/pids/server.pid)
    

    path resolves

    n350071🇯🇵 ・ Nov 7 '19 ・ 1 min read

    #rails

Ruby tips

[Ruby] Awesome methods

n350071🇯🇵 ・ Nov 27 '19 ・ 1 min read

#rails

Switch a couple of variable WITHOUT tmp in Ruby

n350071🇯🇵 ・ Sep 27 '19 ・ 1 min read

#rails

Stop checking if it's nil in Rails

n350071🇯🇵 ・ Sep 27 '19 ・ 1 min read

#rails

start each_with_index from 1 (This is good for UI)

n350071🇯🇵 ・ Sep 27 '19 ・ 1 min read

#rails

Convert to Hash from a couple of the key-value Array in Rails

n350071🇯🇵 ・ Sep 30 '19 ・ 1 min read

#rails

The ary.map(&:to_s), what is this?

n350071🇯🇵 ・ Sep 30 '19 ・ 1 min read

#rails

define_method (write once, run everywhere!)

n350071🇯🇵 ・ Oct 3 '19 ・ 1 min read

#rails

Refactor do end block to {} for reduce scrolling in Rails

n350071🇯🇵 ・ Oct 3 '19 ・ 1 min read

#rails

Ruby array multiple assignment

n350071🇯🇵 ・ Nov 7 '19 ・ 1 min read

#rails

[Ruby] heredocument (ヒアドキュメント)

n350071🇯🇵 ・ Nov 27 '19 ・ 1 min read

#rails

Design/Architecter Pattern

Concern | split, and spin-off, share the responsibility in Rails

n350071🇯🇵 ・ Sep 27 '19 ・ 1 min read

#rails

Form object pattern in Rails

n350071🇯🇵 ・ Oct 3 '19 ・ 1 min read

#rails

Object Hash Pattern in Ruby

n350071🇯🇵 ・ Oct 25 '19 ・ 1 min read

#rails

Service Class by PORO

n350071🇯🇵 ・ Nov 7 '19 ・ 1 min read

#rails

• decorator
  • draper

Gems

Overwrite a gem method by inserting a module in your inheritance chain

n350071🇯🇵 ・ Nov 27 '19 ・ 1 min read

#rails

Authorization

organize the authorizations of the banken/pundit gem with define_method

n350071🇯🇵 ・ Sep 25 '19 ・ 1 min read

#rails #gem

[Devise] Arbitrary Routing (任意のルーティング)

n350071🇯🇵 ・ Nov 27 '19 ・ 1 min read

#rails

State machines, Status

• aasm

Code Quarity

rubocop for code quality and formatting in Rails

n350071🇯🇵 ・ Sep 25 '19 ・ 1 min read

#rails

static security analysis for Rails app by using Breakman

n350071🇯🇵 ・ Sep 25 '19 ・ 1 min read

#rails #gem

metrics your test code coverage in Rails

n350071🇯🇵 ・ Sep 27 '19 ・ 1 min read

#rails #gem

Rails Standard Features

• secrets, credentials

Model

model/table name conversions in Rails

n350071🇯🇵 ・ Sep 27 '19 ・ 1 min read

#rails

a common validations concern in Rails

n350071🇯🇵 ・ Sep 30 '19 ・ 1 min read

#rails

Constant Enum in Activerecord Rails

n350071🇯🇵 ・ Sep 30 '19 ・ 1 min read

#rails

Making a nested params for xxx_tag of View Helper in Rails

n350071🇯🇵 ・ Sep 30 '19 ・ 1 min read

#rails

How to write save and save! (bang! in Rails)

n350071🇯🇵 ・ Nov 27 '19 ・ 1 min read

#rails

View & Helper

View & Helper Tips Note

n350071🇯🇵 ・ Nov 7 '19 ・ 1 min read

#rails

Pass data from Rails to JS

n350071🇯🇵 ・ Nov 27 '19 ・ 1 min read

#rails

Form

Form tags of the ActionView::Helpers in Rails

n350071🇯🇵 ・ Sep 27 '19 ・ 1 min read

#rails

load stylesheet from controller_path

n350071🇯🇵 ・ Sep 27 '19 ・ 1 min read

#rails

Specify layout file in Rails Views

n350071🇯🇵 ・ Sep 27 '19 ・ 1 min read

#rails

Controller

where the request comes from?

# confirm the request comes from `new_book_path`
request.referer.to_s.index(new_book_path)

Ping controller for the Server Monitoring(死活監視)

class PingController < ApplicationController
  def index
    render text: 'OK', layout false
  end
end

iframe Same Origin Policy

class HogeController < ApplicationController
  after_action :allow_iframe_for_trusted_domain, only[:index]

  private
  # Turn enable to see a page in a specific domain by using this method.
  # Because of the Same-Origin-Policy, it can't do it by default.
  def allow_iframe_for_trusted_domain
    alllow_url = "https://n350071.com"
    response.headers['X-Frame-Options'] = "ALLOW-FROM #{alllow_url}"
    response.headers['Content-Security-Policy'] = "frame-ancestors #{alllow_url}" # Chrome用
  end  
end

Routes

pass a model with some params

# The request is `article/:id?author=n350071`
article_path(@article, author: 'n350071')

I18n

I18n in Rails

n350071🇯🇵 ・ Sep 27 '19 ・ 1 min read

#rails

DB

SQL tuning in Rails

n350071🇯🇵 ・ Oct 3 '19 ・ 1 min read

#rails

rake

rake task memo

n350071🇯🇵 ・ Oct 3 '19 ・ 1 min read

#rails

Meta Programing

Append a method to all attributes with attribute_method_suffix in Rails

n350071🇯🇵 ・ Sep 25 '19 ・ 1 min read

#rails

Ruby Instant performance measurement

n350071🇯🇵 ・ Sep 17 '19 ・ 1 min read

#ruby #rails

mattr_accessor and meta programming. Thanks you, devise_invitable 👍

n350071🇯🇵 ・ Nov 7 '19 ・ 1 min read

#rails

the eval meta programming power. Making .env file and Set Constant values from the file

n350071🇯🇵 ・ Nov 7 '19 ・ 1 min read

#rails

Debug

Dive into Gem file

1. set your favorit editor

# bash_profile
export EDITOR="/Applications/Atom.app/Contents/MacOS/Atom"

Don't forget to . ~/.bash_profile after updating.

2. open the bundled gem

just do it like this.

bundle open faker
bundle open banken
bundle open aasm

Setting / Config

• rails-settings-cached
  

  Return a static error page by Rails standard function

  n350071🇯🇵 ・ Nov 7 '19 ・ 1 min read

  #rails

n350071 / rails-starter-kit-with-docker

rails-starter-kit-with-docker

You can create a rails app on docker with only 3 commands.

Screenshot

Usage

Assumptions

I suppose that you already have docker machine If you don't have it, please install it.

• Docker for Mac
• Docker for Ubuntu
• Docker for Windows

And also, you're at the project root directory like new-app If you haven't been yet, type following commands.

mkdir new-app
cd new-app/

1. Clone this repository to your new app directory

git clone [e-mail]:n350071/rails-starter-kit-with-docker.git

2. Copy build files

sh rails-starter-kit-with-docker/cp_build_file.sh

You can rename the app name from myapp with replace command There is a CAPITAL MYAPP, so take care of it.

3. Initialize your new project

make init-project

It starts rails and you can check it by http://localhost:3000. when you want to stop your docker, please type

make stop

Option

You can off the comment at # - ./vendor/bundle:/usr/local/bundle in docker-compose.yml So you can save…

View on GitHub