Beglov Sergey beglov

This blogpost shows how to setup Rails 6 with Bootstrap 4.

This snippet shows a somehow different and less customized approach.

$ rails new rails6-bootstrap4
$ bundle --binstubs
$ yarn add bootstrap jquery popper.js expose-loader

If your master.key has been compromised, you might want to regenerate it.

No key regeneration feature at the moment. We have to do it manually.

Copy content of original credentials rails credentials:show somewhere temporarily.
Remove config/master.key and config/credentials.yml.enc
Run EDITOR=vim rails credentials:edit in the terminal: This command will create a new master.key and credentials.yml.enc if they do not exist.
Paste the original credentials you copied (step 1) in the new credentials file (and save + quit vim)
Add and Commit the file config/credentials.yml.enc

Препроцессор Pug(Jade)

Pug - это препроцессор HTML и шаблонизатор, который был написан на JavaScript для Node.js.

rails new myApp --webpack=vue

Note:

You can use --webpack=angular for angular application and --webpack=react for react.

	# Basic key operators to query the JSON objects :

	# #> : Get the JSON object at that path (if you need to do something fancy)
	# -> : Get the JSON object at that path (if you don't)
	# ->> : Get the JSON object at that path as text
	# {obj, n} : Get the nth item in that object

	# https://www.postgresql.org/docs/9.4/functions-json.html#FUNCTIONS-JSONB-OP-TABLE
	# Date
	# date before today

	# Ruby pattern matching based on Type (=> operator)
	[1,2,3] => [1, Integer, my_variable]
	# This means:
	# We want to assign `my_variable` (variable binding),
	# but only if the first position is 1 and second position is an Integer)
	my_variable # => 3 ✨

	# What if it doesn't match? You get an exception 💣
	[1,2,3] => [Integer, String, my_variable]
	# [1, 2, 3]: String === 2 does not return true (NoMatchingPatternError)

	# sudo vi /etc/nginx/sites-enabled/unicorn.qna.conf

	# это директива nginx которая указывает список бэкенд серверов которые физически будут обрабатывать запрос и таким образом nginx будет проксировать запросы к указанным серверам и даже как loadbalancer
	upstream unicorn {
	server unix:/home/deployer/qna/shared/tmp/sockets/unicorn.qna.sock fail_timeout=0; # описали сервер ссылающийся на сокет а можно было на ip и таких серверов может быть несколько, fail_timeout - означает что nginx не будет посылать запросы если наш сервер не отвечает
	}

	# к этому никакого отношения upstream не имеет
	server {
	listen 80;

	# ...

	store_with S3 do \|s3\|
	s3.access_key_id = "your_key"
	s3.secret_access_key = "your_pass"
	s3.bucket = "your_bucket_name"
	s3.path = "your_path_to_backup"
	s3.region = "ru-central1"
	s3.fog_options = { endpoint: "https://storage.yandexcloud.net" }
	end

	require 'active_record/connection_adapters/sqlite3_adapter'

	#
	# Monkey-patch for disable foreign keys during `alter_table` for sqlite3 adapter for Rails 5
	#

	module ActiveRecord
	module ConnectionAdapters
	class SQLite3Adapter < AbstractAdapter

	FROM ruby:2.3.1

	# Install dependencies
	RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs

	# Set an environment variable where the Rails app is installed to inside of Docker image:
	ENV RAILS_ROOT /var/www/app_name
	RUN mkdir -p $RAILS_ROOT

	# Set working directory, where the commands will be ran: