johnlane

Keybase proof

I hereby claim:

• I am johnlane on github.
• I am johnlane (https://keybase.io/johnlane) on keybase.
• I have a public key ASDE5-a54ZM6flDHH8atfeVPVgu1sXGE16_2aNJ4OPnG-go

To claim this, I am signing this object:

johnlane

-----------------------------------------------------------------
VERSION INFORMATION
gpg (GnuPG) 2.1.17
libgcrypt 1.7.5
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Home: /home/john/.gnupg

johnlane

#!/bin/sh
#

export GNUPGHOME

echo -----------------------------------------------------------------
echo VERSION INFORMATION
gpg --version
uname -vimposr

johnlane

$(document).on('ready page:load ajaxComplete', function() {

  $('textarea.wysiwyg').each(function() {
    var textarea = $(this)
    textarea.hide().uniqueId();
    var textarea_id = textarea[0].id;
    var textarea_class = textarea[0].className;

    var wysiwyg_id  = "wysiwyg_" + textarea_id;
    var wysiwyg_class  = textarea_class + " wysiwyg";

johnlane

# in-ruby-is-it-possible-to-move-a-module-up-the-ancestor-chain
# http://stackoverflow.com/questions/36799396
module A
  def hiya(str)
    puts "ho #{str}"
  end
  def if_what?
  end
end

johnlane

The effect of multiple inheritance can be achieved by using modules.

First define the ActiveRecord objects like this:

class Topic < ActiveRecord::Base; end
class Location < ActiveRecord::Base; end

There is no longer a base Tag abstract class, allowing Tag to be defined as a module like this (app/concepts/tag/crud.rb):

module Tag

johnlane

The Ins and Outs of a Trailblazer Operation Contract

These notes record my attempts to understand how and when to populate a Trailblazer contract. They may be incomplete, inaccurate or just plain wrong. They may also be right; I hope they are! Comments are welcome.

It all began with the requirement to seed a presenting contract from the inbound request. Having looked for answers in the Trailblazer book and on Gitter (there was a similar conversation on the 25th September), taking

johnlane

The Session

The application can behave differently based on the request URL by presenting a diferent 'site' experience to the end-user, who may also choose from the locales (language presentations) that the site supports.The Session manages this: it's a PORO plus some Trailblazer operations. It keeps state for the current request including current user, the Rails session and site and locale selections. It's established with a Session::Create operation before processing a request.

The Session does not persist across requests, except for data placed in its persistent store, for which the Rails session is used (but another Hash-like object could be used instead).

The Session is established in the ApplicationController:

  before_action do
    Session::Create.reject(params.merge(store: session, host: request.host,           
 preferred_locales: get_preferred_locales_from_http_request)) do |op|

johnlane

# app/concepts/widget/cell.rb
# A very basic "Widget" that is a container of Cell objects                           
# When rendered, it recursively renders all cells that it
# contains.
class Widget < Cell::Concept

  attr_reader :parent
  attr_reader :children

  # Create a new widget

johnlane

Injecting Terminal Input

Some examples demonstrating how to inject keystrokes into a terminal's input stream.