Trailblazer Introduction by Nick Sutterer

class CommentsController < AppController def create Comment::Create.(params) endend

class Comment < ActiveRecord::Base belongs_to :authorend

.comment .text = body .author = avatar

FUNCTIONS

”Create comment”

”View profile”

”Follow user”

POST /comments/

”Create comment”

”View profile”

”Follow user”GET /profiles/1

POST /users/1/follow

POST /comments/

”Create comment”

POST /comments/

”Create comment”

POST /comments/

”Create comment”

“Most Rails developers do not write object-oriented Ruby code.

They write MVC-oriented Ruby code by putting models and controllers in the expected locations.

It takes 2-3 years before developers realize: “Rails is just Ruby.”

-- Mike Perham

POST /comments { id : 1 body: “Great!”, author: { “id”: 1 }}

app concepts comment cell index.rb show.rb contract create.rb update.rb operation create.rb update.rb view index.haml show.haml

app concepts comment cell index.rb show.rb contract create.rb update.rb operation create.rb update.rb view index.haml show.haml

POST /comments { body: “Great!”, author: { “id”: 1 }}

POST /comments

class CommentsController < AppController def create Comment::Create.(params) endend

POST /comments

Comment::Create.(params)

POST /comments

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation def process(params) validate do end end endend

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation def process(params) validate do end end endend

app concepts comment cell index.rb show.rb contract create.rb update.rb operation create.rb update.rb view index.haml show.haml

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation def process(params)

end endend

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation def process(params)

end endend

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation def process(params) Comment.create(params)

end endend

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation def process(params) model = Comment.new validate(params, model) do |f| f.save end end endend

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation def process(params) model = Comment.new validate(params, model) do |f| f.save end end endend

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation contract do

end

def process(params) model = Comment.new validate(params, model) do |f| f.save end end endend

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation contract do property :body validates :body, presence: true end

def process(params) model = Comment.new validate(params, model) do |f| f.save end end endend

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation contract Contract::Create

def process(params) model = Comment.new validate(params, model) do |f| f.save end end endend

class Comment < ActiveRecord::Base module Contract class Create < Reform::Form

end endend

class Comment < ActiveRecord::Base module Contract class Create < Reform::Form

end endend

app concepts comment cell index.rb show.rb contract create.rb update.rb operation create.rb update.rb view index.haml show.haml

class Comment < ActiveRecord::Base module Contract class Create < Reform::Form

end endend

class Comment < ActiveRecord::Base module Contract class Create < Reform::Form property :body validates :body, presence: true

end endend

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation contract Contract::Create

def process(params) model = Comment.new validate(params, model) do |f| f.save end end endend

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation contract Contract::Create

def process(params) model = Comment.new validate(params, model) do |f| f.save end end endend

class Comment < ActiveRecord::Base belongs_to :authorend

class CommentsController < AppController def create Comment::Create.(params) endend

describe Comment::Create do it do Comment::Create.(params)

endend

describe Comment::Create do it do Comment::Create.(params). model.persisted? must_equal true endend

describe Comment::Update do let(:comment) { Comment::Create.(..) } end

describe Comment::Create do it do Comment::Create.(params). model.persisted? must_equal true endend

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation contract Contract::Create

def process(params) model = Comment.new validate(params, model) do |f| f.save

end end endend

class Comment < ActiveRecord::Base class Create < Trailblazer::Operation contract Contract::Create

def process(params) model = Comment.new validate(params, model) do |f| f.save after_save! end end endend

= cell("comment/cell/show", comment)

class Comment::Cell::Show < Cell::ViewModel

end

class Comment::Cell::Show < Cell::ViewModel

end

app concepts comment cell index.rb show.rb contract create.rb update.rb operation create.rb update.rb view index.haml show.haml

class Comment::Cell::Show < Cell::ViewModel property :body def show render end

private def avatar image_tag model.image.url endend

.comment .text = body .author = avatar

class Comment::Cell::Show < Cell::ViewModel property :body def show render end

private def avatar image_tag model.image.url endend

.comment .text = body .author = avatar

app concepts comment cell index.rb show.rb contract create.rb update.rb operation create.rb update.rb view index.haml show.haml

http://leanpub.com/trailblazer

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