rheehot/general_memo

useful coding related memo

Git memo

Set always commit for merge

$ git config --global --add merge.ff false

Remove all untracked files and folders

$ git clean -fd

Change previous commit history

$ git rebase -i --root
$ git commit --amend
$ git rebase --continue

Check git log graph

$ git log --graph --oneline

AWS

RDS - PostgreSQL

• create database with free tier option
• #connectivity: create new VPC (or set proper VPC setting for rds)
• #connectivity - additional connectivity configuration - Publicly accessible: yes
• create button

linux commands

find program location

$ locate -b '\atom'

Node memo

update method

• consider to use lodash npm _.merge
• use put or patch

API memo

json placeholder website

http://jsonplaceholder.typicode.com/

axios

Promise based HTTP client for the browser and node.js

async-await

async means a function returns a resolved Promise. await means wait until the Promise settles and return its result.

Typescript

Type

easy way to refer to the different properties + functions that a value has

Rails memo

Rails new default option set

• postgresql default database / not using minitest / skip coffee auto generating

# ~/.railsrc
--database=postgresql
-T
--skip-coffee

After rails new with postgresql

$ rails db:create
$ rails db:migrate

After setting back-end environment, check working

$ curl -H "Content-Type: application/json" -X POST -d '{"username":"1st_user","password":"foobar"}' http://localhost:3001/login

$ curl -H "Content-Type: application/json" -X POST -d '{"username":"2nd_user","password":"foobar"}' http://localhost:3001/login

Push heroku

$ heroku git:remote -a [name of heroku app]
$ heroku run rails db:migrate
$ heroku run rails db:seed

Rubocop code style check

• Choose the option one of this below

$ rubocop -x
$ rubocop --auto-correct

• Make exception

$ rubocop --auto-gen-config  

Postgresql restart

$ sudo service postgresql restart

Server restart

$ ps -aef | grep rails    
$ kill -9 [pID]   

Rails console save error

> p.errors.messages

Heroku rails app image not showing

• config > environments > production.rb

config.assets.compile = true
config.assets.digest = true

heroku server reset

$ heroku pg:reset DATABASE

Haml

• tutorial

Nested form

• with stimulus

Active Storage

• tutorial

Rails 6 connect bootstrap

• tutorial

General memo

generate random image

https://source.unsplash.com/featured?galaxy

E-R diagram tool

https://app.lucidchart.com/

Get some dummy texts

https://hipsum.co

CSS memo

sass watch

• basic

sass --watch scss/style.ss:dist/css/style.css

• compressed

sass --watch scss/style.ss:dist/css/style.min.css --style compressed

gradient picker

• https://uigradients.com

css 3 generator

• https://css3generator.com/

float with clearfix

<div class="clearfix">
  <div class="float-left">
  </div>
</div>

.clearfix:after {
   content: ".";
   visibility: hidden;
   display: block;
   height: 0;
   clear: both;
}