somebox

Thoughts about Rails Presenters

This is a collection of links, examples and rants about Presenters/Decorators in Rails.

---

The "Decorator" pattern slowly started gaining popularity in Rails several years ago. It is not part of core Rails, and there's many different interpretations about how it should work in practice.

Jay Fields wrote about it in 2007 (before he switched back to Java and then Clojure): http://blog.jayfields.com/2007/03/rails-presenter-pattern.html

pocotan001

• 🎨 when improving the format/structure of the code
• 🚀 when improving performance
• ✏️ when writing docs
• 💡 new idea
• 🚧 work in progress
• ➕ when adding feature
• ➖ when removing feature
• 🔈 when adding logging
• 🔇 when reducing logging
• 🐛 when fixing a bug

walkerjeffd

Configure Synology NAS as Git Server

Instructions for setting up a git server on a Synology NAS with Diskstation. Specifically, I am using a DS414 with DSM 5.0.

Set Up User and Folder

• Create user gituser via Diskstation interface (with File Station and WebDAV privilages)
• Add new shared folder called git (located at /volume1/git) with read/write access for gituser and admin. This folder will hold all the repos.
• Install Git Server package via Diskstation

youngbrioche

module ImagesHelper
  # Acts as a thin wrapper for image_tag and generates an srcset attribute for regular image tags
  # for usage with responsive images polyfills like picturefill.js, supports asset pipeline path helpers.
  #
  # image_set_tag 'pic_1980.jpg', { 'pic_640.jpg' => '640w', 'pic_1024.jpg' => '1024w', 'pic_1980.jpg' => '1980w' }, sizes: '100vw', class: 'my-image'
  # 
  # => <img src="/assets/ants_1980.jpg" srcset="/assets/pic_640.jpg 640w, /assets/pic_1024.jpg 1024w, /assets/pic_1980.jpg 1980w" sizes="100vw" class="my-image">
  #
  def image_set_tag(source, srcset = {}, options = {})
    srcset = srcset.map { |src, size| "#{path_to_image(src)} #{size}" }.join(', ')

tispratik

module CacheKeyMonkeyPatch
  module ActiveRecord
    module Integration

      # Returns a cache key that can be used to identify this record.
      #
      # ==== Examples
      #
      #   Product.new.cache_key     # => "products/new"
      #   Product.find(5).cache_key # => "products/5" (updated_at / last_modified_time not available)

igrigorik

\o/ ... for HAProxy. Recent patches to make TLS faster:

• MINOR: ssl: add DEFAULT_SSL_MAX_RECORD to set the record size at build time
• MINOR: config: make the stream interface idle timer user-configurable
• MEDIUM: stream-int: automatically disable CF_STREAMER flags after idle
• MINOR: channel: add the date of last read in the channel
• OPTIM: ssl: implement dynamic record size adjustment
• MINOR: ssl: handshake optim for long certificate chains.

leon

import sbt._
import Keys._
import java.net._
import java.io.File
import play.PlayRunHook

/*
  Grunt runner should be in project directory to be picked up by sbt
*/
object Grunt {

DeaconDesperado

class BloomSet[A] private (val size: Int, val k: Int,private val contents: Vector[Boolean]){
  
  val width = contents.length
 
  def this(width: Int, k: Int) = this(0, k, BloomSet.alloc(width))

  def contains(e:Any) = {
    (0 to k).foldLeft(true) { (acc,i) =>
      acc && contents(hash(e,i,width))
    }

milessabin

scala> :paste
// Entering paste mode (ctrl-D to finish)

// tag is a module which can be imported from, but also, thanks to its apply method and Scala's
// syntactic sugar, a function-like value which can be invoked directly.
object tag {
  def apply[U] = new Tagger[U]

  trait Tagged[U]
  type @@[+T, U] = T with Tagged[U]

stex

#Overrides the default way how rails marks form fields with errors.
#In this version, it only adds the class 'error' to label and element

ActionView::Base.field_error_proc = Proc.new do |html_tag, instance|
  if html_tag =~ /<(input|label|textarea|select)/
    html_field = Nokogiri::HTML::DocumentFragment.parse(html_tag)
    html_field.children.add_class 'error'
    html_field.to_s
  else
    html_tag