make resourceful

7/31/2019 Make Resourceful

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Choose Your Battles and

LetIt::RESTHampton Catlin and Jeffrey Hardy


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Obligatory Resume

50 years of Rails experience

PHDs from MIT

Founded the Dharma Initiative


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Invented

Haml, Scribbish, Sass, ASCII, Ruby, Lisp,

The DaVinci Code, Unicorns, Rainbows,Kittens, Cat Macros, Balloons, Prototype,Rails, Babies, Altoids, SQL, Religion, andMonkey Poop (not monkeys, though).


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The Beauty of

Resource-BasedControllers


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class PostsController < ApplicationController

def index

@posts = Post.find(:all)

respond_to do |format|

format.html # index.rhtml

format.xml { render:xml => @posts.to_xml }

end

end

def show

@post = Post.find(params[:id])


format.html # show.rhtml

format.xml { render:xml => @post.to_xml }

end

end

def new

@post = Post.new

end

def edit


end

def create

@post = Post.new(params[:post])


if @posts.save

flash[:notice] = 'Posts was successfully created.'

format.html { redirect_to post_url(@post) }

format.xml { head :created, :location => post_url(@post) }

else

format.html { render:action => "new" }format.xml { render:xml => @post.errors.to_xml }

end

end

end

def update



if @post.update_attributes(params[:post])

flash[:notice] = 'Posts was successfully updated.'


format.xml { head :ok }

else

format.html { render:action => "edit" }

format.xml { render:xml => @post.errors.to_xml }

end

end

end

def destroy@post = Post.find(params[:id])

@post.destroy


format.html { redirect_to posts_url }


end

end

end


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The Problem


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The Goal


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PRODUCTIONNo Shit!


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Exceptions areManageable


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Action Pattern

load resource object(s) optional preloads

perform modifying action (CUD)

respond


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def index

@posts = Post.find(:all)


format.html # index.rhtml

format.xml { render:xml => @posts.to_xml }

end

end

def show



format.html # show.rhtml

format.xml { render:xml => @post.to_xml }

end

end

def new

@post = Post.new

end

def edit


end

def create

@post = Post.new(params[:post])


if @posts.save

flash[:notice] = 'Posts was successfully created.'


format.xml { head :created, :location => post_url(@post) }

else

format.html { render:action => "new" }format.xml { render:xml => @post.errors.to_xml }

end

end

end

def update



if @post.update_attributes(params[:post])

flash[:notice] = 'Posts was successfully updated.'



else

format.html { render:action => "edit" }

format.xml { render:xml => @post.errors.to_xml }

end

end

end

def destroy@post = Post.find(params[:id])

@post.destroy


format.html { redirect_to posts_url }


end

end

end


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make_resourceful dobuild :all end

end


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class CommentsController < ApplicationController

make_resourceful dobuild :create, :destroy end

end


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map.resources:posts, :has_many => :comments


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make_resourceful do

build :create, :destroybelongs_to :post

end

end


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Association Proxy(our saviour)


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Post.find(params[:post_id]).comments.find(:all)Post.find(params[:post_id]).comments.find(params[:id])Post.find(params[:post_id]).comments.find(params[:id]).update_attributes(params[:comment])Post.find(params[:post_id]).comments.find(params[:id]).destroy

Post.find(params[:post_id]).comments.build(params[:comment])Post.find(params[:post_id]).comments.build(params[:comment]).save

notice something?


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current_model


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Comment.belongs_to:user


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current_user


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make_resourceful do

build:create, :destroy belongs_to:post associate_with:current_user end

end


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More Helpers


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def current_paramparams[:id]

end

def current_objectcurrent_model.find(current_param)

end

def current_objectscurrent_model.find(:all)

end

def load_objectinstance_variable_set("@#{model_name}", current_object)end


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Callbacks


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make_resourceful dobuild :all

before :showdo@page_title = "Awesome"

end end

end


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make_resourceful do

build :all

before :showdo@page_title = "Awesome"

end

response_for :showdo |format|format.html { redirect_to current_object }

end

response_for :update do

redirect_to root_url end end

end


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No Blocking


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Encourages Phat Models


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Experimental: Publish


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make_resourceful dobuild :all

#...publish :formats => [:xml, :yaml, :json],

:only => :show, :attributes => [:title, :body, { :comments => :body }] end

end


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super alpha(but were using it in production)


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http://[email protected]
mailto:[email protected]:[email protected]://hamptoncatlin.com/http://hamptoncatlin.com/

make resourceful

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