ecoologic

class: center, middle

@net_engine

@erikecoologic

Slides available at ???????

---

class: center, middle

Boundaries

ecoologic

Template Inheritance

Similarly to the Layout Inheritance logic, if a template or partial is not found in the conventional path, the controller will look for a template or partial to render in its inheritance chain. For example:

# in app/controllers/application_controller
class ApplicationController < ActionController::Base
end

# in app/controllers/admin_controller

ecoologic

cardType = (cc) ->
  result = "unknown"
  result = "mastercard" if /^5[1-5]/.test(cc)
  result = "visa"       if /^4/.test(cc)
  result = "amex"       if /^3[47]/.test(cc)
  result

luhn = (cc) ->
  sum = 0
  alt = false

ecoologic

POODIR (Sandi Metz)

In this post I'm going to answer the question: Why should every ruby developer read Practical Object Oriented Design In Ruby by Sandi Metz?

In short: two reasons:

1. As correctly suggested by the title, it's about useful everyday choices of design, arguably your most important skill as a developer

2. It's easy and useful to read cover to cover

ecoologic

App = Em.Application.create() # use App for every app and Em as a shortcut

window.h = # h a hash with all the non oo helpers
  formatDate: (date) ->
    date = new Date unless date?
    [date.getDate(), (date.getMonth() + 1), date.getFullYear(), ].join('/')

$ ->
  $('.datepicker').datepicker()
  $('.tab').tabs()

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  $('form#new_invoice:not(".invoice-project-select")').submit ->
    $form = $('form#new_invoice')
    $tasks = $form.find('.task-checkbox')
    $flatFees = $form.find('[data-flatfee]')
    confirmCheckAll = 'You have not selected a single item.  Please take note that all items that are unbillable are unchecked by default.\n\nDo you want to check them all and create the invoice?'
    confirmInvoiceWithFlatFees = "There are either tasks or projects that have a fixed fee set. If you would like to instead invoice these by hours logged, please set them to 'hourly' before creating the invoice.\n\nDo you still wish to create the invoice now?"
 
    # $tasks.find(':not(:checked)').click() # this keeps the graphic in sync
    $tasks.attr('checked', true) if $tasks.find(':checked').length == 0 && confirm(confirmCheckAll)
 

ecoologic

{}.as_json # {}
{}.to_json # "{}"

# query / command
user_params # query, no get_params etc, prefer queries over commands, leads to more declarative code, which is simpler
remote_document # Query, not get_document, more declarative
buy_document! # Exception to the above, it's probably a POST and I want to express that it's not a free call
prepare_document! # Bang to express imperative behaviour (?)
compact_params(params) # command - takes args and can be reused
compacted_user_params # YES, a noun is better

ecoologic

[user]
  name = erik
	email = erikecoologic@gmail.com
[color]
	ui = auto
[core]
	whitespace = trailing-space,space-before-tab
	editor = vim
	excludesfile = /Users/netengine/.gitignore_global
[diff]

ecoologic

What is Earth Day

Every year, the 22nd April (since 1970) is known as Earth Day! It is a day where everyone is encouraged to think a little bit more of the environment. We asked to mindful of catastrophic changes which might result if our society continues to disrespect the earth.

NetEngine

NetEngine is very happy to exist on this planet and in order to minimize our collective impact to our environment we already have in place some simple practices, which we encourage others to adopt if you aren't already adept to them. They include, recycling or providing showers so people can come to work by bike.

We are always thinking of how to take this further. In the meantime, to show our respect for Mother Earth on its day we're taking some simple steps like, inviting everyone to avoid using the car; keeping the aircon off for the entire day; minimising the use of lights and other polluting devices, and given we'll likely survive the day without these things, we'll likely adopt them as common practice.

ecoologic

What is Earth Day

Every year, the 22nd April (since 1970) is known as Earth Day! It is a day where everyone is encouraged to think a little bit more of the environment. We asked to mindful of catastrophic changes which might result if our society continues to disrespect the Earth.

NetEngine

NetEngine is very happy to exist on this planet and in order to minimize our collective impact to our environment we already have in place some simple practices, which we encourage others to adopt if you aren't already adept to them. They include, recycling or providing showers so people can come to work by bike.

We are always thinking of how to take this further. In the meantime, to show our respect for Mother Earth on its day we're taking some simple steps like, inviting everyone to avoid using the car; keeping the aircon off for the entire day; minimising the use of lights and other polluting devices, and given we'll likely survive the day without these things, we'll likely adopt them as common practice.