ruby on rails: comedia en 3 actos
DESCRIPTION
Intro a Rails para no iniciados totalmente básica y vistazo por encima a ActiveRecord.TRANSCRIPT
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Ruby on Rails:Comedia en 3 actos
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I.PrólogoO de cómo un lenguaje creado en Japón y un framework hecho por un tío danés pueden tener algo que ver con tu vida.
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Linux“..
.Inst
alan
do q
ue e
s ger
undi
o...”
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Windows
http://bitnami.org/stack/rubystack
“...In
stal
ando
que
es g
erun
dio.
..”
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Buenas intros“..
.y se
hiz
o Ru
by...
”
http://www.humblelittlerubybook.com/
http://www.ruby-lang.org/es/documentation/
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Podéis tener abierto...“..
.y se
hiz
o Ru
by...
”
http://www.ruby-lang.org/es/documentation/quickstart/
http://railsapi.com/
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“...y
se h
izo
Ruby
...”
Snippetsen Textmate e IRB
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II. Romance O de cómo te puedes enamorar de una tecnología en 30 minutos.
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“... e
n el
pri
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inab
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as...
”
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“... e
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”
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“... e
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1 # SQLite version 3.x 2 # gem install sqlite3-ruby (not necessary on OS X Leopard) 3 development: 4 adapter: sqlite3 5 database: db/development.sqlite3 6 pool: 5 7 timeout: 5000 8 9 # Warning: The database defined as "test" will be erased and 10 # re-generated from your development database when you run "rake". 11 # Do not set this db to the same as development or production. 12 test: 13 adapter: sqlite3 14 database: db/test.sqlite3 15 pool: 5 16 timeout: 5000 17 18 production: 19 adapter: sqlite3 20 database: db/production.sqlite3 21 pool: 5 22 timeout: 5000
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“... e
n el
pri
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inab
an la
s tin
iebl
as...
”
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“... e
n el
pri
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s tin
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”
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“... e
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Hello, Rails!
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“... e
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”
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“... e
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”
Scaffolding
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“... e
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” Scaffolding
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“... e
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”Migration
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“... e
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”Migration
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“... e
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”
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“... e
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Bingo!(revisemos...)
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“... e
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“... e
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”
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“... e
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”
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“... e
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”
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“... e
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”
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“... e
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”
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“... e
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”
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“... e
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“... e
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”
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“... e
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”
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“... e
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”
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“... e
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”
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“... e
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”
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“... e
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“... e
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DRY
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“... e
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“... e
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“... e
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“... e
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“... e
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“... e
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“... e
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“... e
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” 1 class CommentsController < ApplicationController 2 def index 3 @post = Post.find(params[:post_id]) 4 @comments = @post.comments 5 end 6 7 def show 8 @post = Post.find(params[:post_id]) 9 @comment = @post.comments.find(params[:id]) 10 end 11 12 def new 13 @post = Post.find(params[:post_id]) 14 @comment = @post.comments.build 15 end 16 17 def create 18 @post = Post.find(params[:post_id]) 19 @comment = @post.comments.build(params[:comment]) 20 if @comment.save 21 redirect_to post_comment_url(@post, @comment) 22 else 23 render :action => "new" 24 end 25 end 26
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”27 def edit 28 @post = Post.find(params[:post_id]) 29 @comment = @post.comments.find(params[:id]) 30 end 31 32 def update 33 @post = Post.find(params[:post_id]) 34 @comment = Comment.find(params[:id]) 35 if @comment.update_attributes(params[:comment]) 36 redirect_to post_comment_url(@post, @comment) 37 else 38 render :action => "edit" 39 end 40 end 41 42 def destroy 43 @post = Post.find(params[:post_id]) 44 @comment = Comment.find(params[:id]) 45 @comment.destroy 46 47 respond_to do |format| 48 format.html { redirect_to post_comments_path(@post) } 49 format.xml { head :ok } 50 end 51 end 52 53 end
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Intermedio
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III.Tocata y fugaO de cómo lo que parecía una sola cosa es en realidad diferentes partes que funcionan juntas y tienen su propia alma.
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“... s
obre
tí le
vant
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mi i
gles
ia...
”
ActiveRecordActionControllerActionViewMigrations
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“... s
obre
tí le
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”
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“... s
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“... s
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“... s
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“... s
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validates_presence_ofvalidates_uniqueness_ofvalidates_associated
etc...
“... s
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”
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“... s
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“... s
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“... s
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“... s
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“... s
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“... s
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“... s
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“... s
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“... s
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“... s
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“... s
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”
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“... s
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Relaciones
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“... s
obre
tí le
vant
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mi i
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La manera coñazo:
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Rails way:
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Tipos
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belongs_to
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aré
mi i
gles
ia...
”
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has_one
“... s
obre
tí le
vant
aré
mi i
gles
ia...
”
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has_many
“... s
obre
tí le
vant
aré
mi i
gles
ia...
”
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has_many :through
“... s
obre
tí le
vant
aré
mi i
gles
ia...
”
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has_many :through“..
. sob
re tí
leva
ntar
é m
i igl
esia
...”
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has_many :through como atajo
“... s
obre
tí le
vant
aré
mi i
gles
ia...
”
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Polimórficas
“... s
obre
tí le
vant
aré
mi i
gles
ia...
”
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Polimórficas
“... s
obre
tí le
vant
aré
mi i
gles
ia...
”
![Page 79: Ruby on Rails: Comedia en 3 actos](https://reader033.vdocuments.us/reader033/viewer/2022052907/558ebc741a28ab7b1f8b46d8/html5/thumbnails/79.jpg)
Metodos añadidos por las relaciones“..
. sob
re tí
leva
ntar
é m
i igl
esia
...”
![Page 80: Ruby on Rails: Comedia en 3 actos](https://reader033.vdocuments.us/reader033/viewer/2022052907/558ebc741a28ab7b1f8b46d8/html5/thumbnails/80.jpg)
Metodos añadidos por las relaciones
“... s
obre
tí le
vant
aré
mi i
gles
ia...
”
![Page 81: Ruby on Rails: Comedia en 3 actos](https://reader033.vdocuments.us/reader033/viewer/2022052907/558ebc741a28ab7b1f8b46d8/html5/thumbnails/81.jpg)
Callbacks
“... s
obre
tí le
vant
aré
mi i
gles
ia...
”
![Page 82: Ruby on Rails: Comedia en 3 actos](https://reader033.vdocuments.us/reader033/viewer/2022052907/558ebc741a28ab7b1f8b46d8/html5/thumbnails/82.jpg)
Callbacks
“... s
obre
tí le
vant
aré
mi i
gles
ia...
”
![Page 83: Ruby on Rails: Comedia en 3 actos](https://reader033.vdocuments.us/reader033/viewer/2022052907/558ebc741a28ab7b1f8b46d8/html5/thumbnails/83.jpg)
Extensiones
“... s
obre
tí le
vant
aré
mi i
gles
ia...
”
![Page 84: Ruby on Rails: Comedia en 3 actos](https://reader033.vdocuments.us/reader033/viewer/2022052907/558ebc741a28ab7b1f8b46d8/html5/thumbnails/84.jpg)
Querys
![Page 85: Ruby on Rails: Comedia en 3 actos](https://reader033.vdocuments.us/reader033/viewer/2022052907/558ebc741a28ab7b1f8b46d8/html5/thumbnails/85.jpg)
Escenario
![Page 86: Ruby on Rails: Comedia en 3 actos](https://reader033.vdocuments.us/reader033/viewer/2022052907/558ebc741a28ab7b1f8b46d8/html5/thumbnails/86.jpg)
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Migraciones
![Page 95: Ruby on Rails: Comedia en 3 actos](https://reader033.vdocuments.us/reader033/viewer/2022052907/558ebc741a28ab7b1f8b46d8/html5/thumbnails/95.jpg)
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Fin y Comienzo