brianjbayer

Unlocking the Secrets of Rails Secrets and Credentials

---

If you are like many (most?) of us, you have encountered Rails Credentials/Secrets and secret_key_base and may have been left a bit (or more) confused.

This post is an attempt to remove some of that confusion by

mabenson00

# 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

dansuh17

From Stack Overflow.

# Fetch the submodule commits into the main repository
git remote add submodule_origin git://url/to/submodule/origin
git fetch submodule_origin

# Start a fake merge (won't change any files, won't commit anything)
git merge -s ours --no-commit submodule_origin/master

alexellis

This guide has moved to a GitHub repository to enable collaboration and community input via pull-requests.

https://github.com/alexellis/k8s-on-raspbian

Alex

Oxicode

Install wkhtmltopdf on Ubuntu

This was tested on:

• Ubuntu 14.04 x64
• Ubuntu 16.04 x64

Step 1

Install the xvfb server by running

spalladino

# Backup
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

# Restore
cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE

akras14

Git Cheat Sheet

Commands

Getting Started

git init

or

branneman

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

const Article = require('../../../../app/models/article');

Those suck for maintenance and they're ugly.

Possible solutions

linjunpop

Deploy Rails 4 app with Dokku on DigitalOcean

Install dokku

First create a Ubuntu 13.04 x64 droplet on DigitalOcean Control Panel

Then ssh with root account, run this in termianl:

$ wget -qO- https://raw.github.com/progrium/dokku/master/bootstrap.sh | sudo bash

rainchen

class Photo < ActiveRecord::Base
    module Statues
      QUEUED = 'queued'
      NEW    = 'new'

      def self.values
        constants.map(&method(:const_get))
      end
      # you can define more special methods as you wanted for Statues
    end