cupakromer

# No flash messages are set with this controller.
#
# This is a fairly basic / bare controller which does only the basic CRUD.
class BooksController < ApplicationController
  respond_to :html, :xml, :json

  before_action :set_book, only: [:show, :edit, :update, :destroy]

  def index
    respond_with @books = Book.all

whatthewhat

require 'sidekiq/api'

Sidekiq::ScheduledSet.new.find_job("61374d5d51db323507376158")

mlanett

HTTP status code symbols for Rails

Thanks to Cody Fauser for this list of HTTP responce codes and their Ruby on Rails symbol mappings.

Status Code Symbol
1xx Informational
100 :continue
101 :switching_protocols
102 :processing

mozamimy

require "resolv"

class Model < ActiveRecord::Base
  validates :ip_address, format: { with: Resolv::IPv4::Regex }
  validates :mac_address, format: { with: /\A([0-9A-F]{2}[-:]){5}([0-9A-F]{2})\z/ }
end

zulhfreelancer

It's important to note that running this reset will drop any existing data you have in the application

How to reset PG Database on Heroku?

• Step 1: heroku restart
• Step 2: heroku pg:reset DATABASE (no need to change the DATABASE)
• Step 3: heroku run rake db:migrate
• Step 4: heroku run rake db:seed (if you have seed)

One liner

MarkMurphy

Example Usage

Users

id	name
1	Jane
2	Max
3	John
4	Scott

ryanermita

Optimistic Locking assumes that a database transaction conflict is very rare to happen. It uses a version number of the record to track the changes. It raise an error when other user tries to update the record while it is lock.

usage

Just add a lock_version column to the table you want to place the lock and Rails will automatically check this column before updating the record.

Pessimistic locking assumes that database transaction conflict is very likely to happen. It locks the record until the transaction is done. If the record is currently lock and the other user make a transaction, that second transaction will wait until the lock in first transaction is release.

usage

SumitGA

Adding Google Sign In With Rails and React

For this blog post we will be using ruby version 2.4.0 and rails version 5.1.4 as backend and React/Redux as frontend. Adding Google Sign in functionality in your application can be done in two popular ways.

• Adding google sign in functionality in the frontend with google api client gapi.

• Adding google sign in functionality logic in the backend server.

If your application has separate backendend with APIs feeding data to the frontend React application, I suggest you to follow the step 2. If you want yo enhance your application security, then you implement both.

YamiOdymel

$ sudo apt-get update
$ sudo apt-get install unzip wget
$ wget https://bin.equinox.io/c/4VmDzA7iaHb/ngrok-stable-linux-amd64.zip
$ unzip ngrok-stable-linux-amd64.zip
$ sudo mv ./ngrok /usr/bin/ngrok
$ ngrok

bazzel

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