panpsychism/ruby_rails_sql_resources/books.md

Books_app

• Create a rails app called books_app
• Create a books controller
• Populate it with the following...

class BooksController < ApplicationController

	def index
		# Fake DB ORM call
		puts "============="
		@all_books = $BOOKS
		p @all_books
		puts "============="
	end

	def show
		# Get the id via params
		id = params[:id].to_i
		puts "============="
		puts id
		puts id.class
		puts "============="

		@book = {}
		$BOOKS.each do |book|
			if book[:id] === id
				@book = book
				puts "============="
				puts "book found"
				puts "============="
			end
		end

		# Remember, just putting the final variable makes it implicitly return
		@book

		# More statements to test
		puts "================"
		p @book
		puts "================"
	end

	def new
		@book = Book.new
	end

	def create
		name = book_params[:title]
		nickname = book_params[:author]
		new_id = $BOOKS.length + 1

		$BOOKS << { id: new_id, title: title, author: author}

		redirect_to :root
	end

	def edit
		id = params[:id].to_i
		puts "============="
		puts id
		puts id.class
		puts "============="

		find_book = {}
		$BOOKS.each do |book|
			if book[:id] === id
				find_book = book
				puts "============="
				puts "book found"
				puts "============="
			end
		end

		@book_teacher = Book.new(find_book)

		@book = @existing_book
	end

	def update
		id = params[:id].to_i
		new_title = book_params[:title]
		new_author = book_params[:author]

		$BOOKS.each do |book|
			if book[:id] == id
				book[:title] = new_title
				book[:authoer] = new_author
			end
		end

		redirect_to :root
	end

	def destroy
		id = params[:id].to_i
		$BOOKS.each do |book|
			if book[:id] == id
				$BOOKS.delete(book)
			end
		end

		redirect_to :root
	end


	private

	def book_params
		params.require(:book).permit(:title, :author)
	end

end

• Add dummy book data. Inside configs->initializers
  • create books.rb
  • populate it with the following...

  $BOOKS = [
  	{
  		id: 1,
  		title: "The Book of Awesomesauce",
  		author: "Joe"
  	},
  	{
  		id: 2,
  		title: "The Book of coolness",
  		author: "Matt",
  	},
  	{
  		id: 3,
  		title: "Death is yummy",
  		author: "Thom"
  	}
  ]
  

• Create your routes using resources on books.
• Create a tableless model so that we can use dummy data
  • Inside app/models
  • create books.rb
  • populate it with the following...

  class Book
  	include ActiveModel::Model
  
  	attr_accessor :title, :author, :id
  	validates :title, :author, presence: true
  end
  

• Build out views
  • Create a folder for books
  • Create the corresponding html.erb files for the following
    • index.html.erb
    • edit.html.erb
    • new.html.erb
    • show.html.erb
    • _form.html.erb
• Create links using the link_for helper to attach the user's experience to navigate the show and delete actions off the index page.
  • Be sure to play with the path prefixing off the rake routes.
• Create a link to show for each book off the index page.
• Use the following to create the _form.html.erb

<%= form_for @book do |form| %>
	Name: <%= form.text_field :title %><br>
	Nickname: <%= form.text_field :author %><br>
	<%= form.submit %>
<% end %>

• Use the _form.html.erb partial for the edit.html.erb and the new.html.erb
• Note that the edit form will continue to add a new instance of book, don't worry about this bug.

Rely on the various notes from today and the reference code as well as start looking up rails documentation and SO's.