Katrina DeVaney kattak

##What are Service Objects?

 Service objects contain business logic with an interface that is easy to test.
 View > Controller > Model, but sometimes need other data, i.e. from an API

Where are service objects located?

├── app

#Checkbox Field

<div class="field">
<%= f.label "Mechanics in Game:" %><br />
<%= f.collection_check_boxes :mechanic_ids, @mechanics.all, :id, :name do |m| %>
  <div class="collection-check-box">
    <%= m.check_box %>
    <%= m.label %>
  </div>

##Bookmarklets

#####What is it?

An anonymous JS function
Saved in the url of a bookmark in your browser
Can also reference an external file

#####What can it be used for?:

Hide the subscription blocker on NYT
Fill in forms for you

Make a Rails blog in 10 minutes

New Rails App with postgres

rails new APPNAME --database=postgresql

Why can't we use the default (sqlite) database?

Heroku is a popular free hosting service.
Heroku doesn’t use SQLite3, which is the default database in new Rails apps.

#About d3.js

Gallery

#First Step ✮ Either use a gem - this one is most popular iblue/d3-rails

-You might get a json v1.8.1 error

-Delete the Gemfile.lock

###Big Questions for search optimization

How many queries? Can get (and parse) full lyrics? Can store/serialize lyrics? How to store once acquired? Restricted list Possible queries and benchmarks from existing APIs

https://www.npmjs.com/package/api-benchmark

Crawler Search and ranking already done when you do a search. To make search so fast, the search layer just returns the next 10 results from a list starting at position 1.

#Sentiment Analysis Options

####Alchemy

SDK :/

####Google Prediction API Developer Guide: https://cloud.google.com/prediction/docs/developer-guide#designrecommendations

##Built-in Rails/Gems

[0] Rails guide to caching in rails - read this first http://guides.rubyonrails.org/caching_with_rails.html

Heroku Guide to Caching Strategies for Rails - read this second https://devcenter.heroku.com/articles/caching-strategies

[1] Countercache in ActiveAssocation

	```bash
	'rails new APPNAME --database=postgresql’
	*heroku doesn’t use sqlite3, which is default in new rails apps
	*SQLite just stores the database to a file in your db/ folder, which is why it's incompatible with Heroku.*

	**Redo blog app using postgresql DB
	**Then try deploying to heroku


	How to deploy app to heroku

	Types of Languages
	Interpreted/Dynamic: Python, Ruby
	Compiled: C, C++, Java
	Scripting: ECMA
	Markup: HTML, Markdown

	What is a scripting language?
	-A scripting or script language is a programming language that supports scripts, programs written for a special run-time environment that automate the execution of tasks that could alternatively be executed one-by-one by a human operator.[1] Scripting languages are often interpreted (rather than compiled).

	JavaScript is an interpreted language, not a compiled language. A program such as C++ or Java needs to be compiled before it is run. The source code is passed through a program called a compiler, which translates it into bytecode that the machine understands and can execute.