salmanx

var OFF = 0, WARN = 1, ERROR = 2;

module.exports = exports = {
    "env": {
        "es6": true
    },

    "ecmaFeatures": {
        // env=es6 doesn't include modules, which we are using
        "modules": true

salmanx

<div class="container">
  <h3 class="page-header">Upload Photos Page</h3>

  <form class="form-horizontal">
    <div class="form-group">
      <label for="photo" class="col-sm-2 control-label">Upload</label>
      <div class="col-sm-10">
        <input type="file" class="form-control" name="photo" id="photo" accept=".png, .jpg, .jpeg" onchange="readFile(this);" multiple>
      </div>
    </div>

salmanx

module BrowserClassHelper
  def browser_class
    if ie11?
      "is-ie11"
    else
      "is-" + request.browser.downcase
    end
  end

  def ie11?

salmanx

// borrowed from https://getbootstrap.com/docs/4.4/getting-started/browsers-devices/
<script>
$(function () {
  var nua = navigator.userAgent
  var isAndroid = (nua.indexOf('Mozilla/5.0') > -1 && nua.indexOf('Android ') > -1 && nua.indexOf('AppleWebKit') > -1 && nua.indexOf('Chrome') === -1)
  if (isAndroid) {
    // do stuff
  }
})
</script>

salmanx

1. Add gem 'rails_12factor' to your Gemfile. This will add error logging and the ability for your app to serve static assets.
2. bundle
3. Run RAILS_ENV=production rake db:create db:migrate db:seed
4. Run rake secret and copy the output
5. From the command line: export SECRET_KEY_BASE=output-of-rake-secret
6. To precompile your assets, run rake assets:precompile. This will create a folder public/assets that contains all of your assets.
7. Run RAILS_ENV=production rails s and you should see your app.

Remember to clobber your assets (rake assets:clobber) and re-precompile (rake assets:precompile) if you make changes.

salmanx

VSCode - ESLint, Prettier & Airbnb Setup

1. Install ESLint & Prettier extensions for VSCode

Optional - Set format on save and any global prettier options

2. Install Packages

npm i -D eslint prettier eslint-plugin-prettier eslint-config-prettier eslint-plugin-node eslint-config-node

salmanx

import React, { Component } from 'react';
import styled from 'styled-components';

export default class Tab extends Component {
	constructor(props) {
		super(props);
		console.log(this.props);

		this.state = {
			activeTabIndex:  1

salmanx

MongoDB Cheat Sheet

Show All Databases

show dbs

Show Current Database

salmanx

var arr = [
        {'id':1 ,'parentid' : 0},
        {'id':2 ,'parentid' : 1},
        {'id':3 ,'parentid' : 1},
        {'id':4 ,'parentid' : 2},
        {'id':5 ,'parentid' : 0},
        {'id':6 ,'parentid' : 0},
        {'id':7 ,'parentid' : 4}
];

salmanx

### DigitalOcean Ubuntu 18.04 x64 + Rails 5 + Nginx + Unicorn + PostgreSQL9.6 + Capistrano 3

SSH into Root

    $ ssh [email protected]

Change Root Password

    $ passwd