zxbodya

Observable React elements with RxJS

Note: if you want to skip history behind this, and just looking for final result see: rx-react-container

When I just started using RxJS with React, I was subscribing to observables in componentDidMount and disposing subscriptions at componentWillUnmount.

But, soon I realised that it is not fun to do all that subscriptions(that are just updating property in component state) manually, and written mixin for this...

Later I have rewritten it as "high order component" and added possibility to pass also obsarvers that will receive events from component.

hopsoft

# lib/tasks/db.rake
namespace :db do

  desc "Dumps the database to db/APP_NAME.dump"
  task :dump => :environment do
    cmd = nil
    with_config do |app, host, db, user|
      cmd = "pg_dump --host #{host} --username #{user} --verbose --clean --no-owner --no-acl --format=c #{db} > #{Rails.root}/db/#{app}.dump"
    end
    puts cmd

mateusmedeiros

[Unit]
Description=App running with puma + improvised rvm gemset support

[Service]
RootDirectory=/srv/http
WorkingDirectory=/www/doodad
User=http
Group=http
EnvironmentFile=/etc/systemd/system/doodad.vars

dhh

class Profile < ActiveModel::Aggregator
  aggregate :user
  aggregate :email

  def combine
    user.save
    user.emails.build(email_attributes).save
  end
end

thomasfr

How-to setup a simple git push deployment

These are my notes basically. At first i created this gist just as a reminder for myself. But feel free to use this for your project as a starting point. If you have questions you can find me on twitter @thomasf https://twitter.com/thomasf This is how i used it on a Debian Wheezy testing (https://www.debian.org/releases/testing/)

Discuss, ask questions, etc. here https://news.ycombinator.com/item?id=7445545

On the server (example.com)

jswanner

# before
def self.front_page
  where(:front_page => true).select('*, coalesce(position, 999999999) AS position').order('position ASC')
end

# after
def self.front_page
  where(:front_page => true).select([
    Arel.sql('*'),
    Arel::Nodes::NamedFunction.new('COALESCE', [arel_table[:position], 999999999]).as('position')