Week 3, Day 1

til.txt

http://localhost:3000/strawberry-pie                  Examples of possible URLs we have worked with
http://localhost:3000/api/recipe/strawberry-pie       Command C will default to copying the line if nothing is highlighted.
http://localhost:3000/api/cookbook/3/recipes/4
http://localhost:3000/api/recipes/4   <-- Example of "restful routing"
http://localhost:3000/api/4                     

GET         /photos         photos#index        display a list of all photos
GET         /photos/new     photos#new          return an HTML form for creating a new photo
POST     
GET     
GET     
PATCH/PUT       
DELETE           

Command P in sublime allows you to open a file by searching (VERY USEFUL)

Rails.application.routes.draw do
  namespace :api do
    get '/recipes' => 'recipes#index'
    post '/recipes/' => 'recipes#create'
    get '/recipes/:id' => 'recipes#show'
  end
end

class Api::RecipesController < ApplicationController      <- controller file
  def index
    @recipes = Recipe.all
    render 'index.json.jbuilder'    <- references index view file
  end
  
  def show
    @recipe = Recipe.find(params[:id])    
    render 'show.json.jbuilder'       <- references show view file
  end
end

json.array! @recipes.each do |recipe|       <- index view file (a view all)
  json.id recipe.id
  json.title recipe.title
  json.chef recipe.chef
  json.prep_time recipe.prep_time
  json.ingredients recipe.ingredients                             Aim to do at least 10 of these, 5 without notes, for fluency
  json.directions recipe.directions
  json.image_url recipe.image_url
end



"Computers only know zero, one, and many."
URLs should be named plural


Uncomment cors.rb in config->initializers    <- This file is not normally in Rails. It was added by Actualize to our Rails to make it easier.

===========================================================================================================================

Whiteboarding
                                  
                                  
                                  
Examples of how to whiteboard                     O O O X X X   O = rock, X = red rock
1) list all red rocks
2) find all red rocks


• Stay simple. Stick to times loops. Don't use complex methods like .flatten or .sort.
• Think ahead so you aren't erasing constantly.
• Used commonly in interviews. If you don't ask questions, you will have points deducted.
• Give a narrative of your thought process or even stream of consciousness.

Problem: An array of 3 strings. Smash them together.

Whiteboarding:

input: array of strings. example: ["Peter", "Paul", "Mary"]     
output: string "PeterPaulMary"

If the array is long, enough to show the pattern, beginning and ending

1) Take in a list of names
2) Create a location to collect our names
3) Add names one at a time to our collection
4) Give back our collection

def smasher(names)
  collected_names = ""
  index = 0
  names.length.times do
    collected_names += names[index]
    index += 1
  end
  
  return collected_names
end

def smasher_each(names)
  collected_names = ""
  names.each do |name|
    collected_names += name
  end
  
  return collected_names
end

__________________________________________________|
times   | index | names[i]    |        coll_names |
________|_____________________|___________________|
 1      |  0    | "Peter"     |   "Peter"         |             Sometimes visualization helps.
 2      |  1    |  "Paul"     |   "PeterPaul"     |             Drawing may
 3      |  2    |  "Mary"     |   "PeterPaulMary" |