controller_refactoring.rb

# Remove business logic from controller

class CreatePortFolioItem
  Response = Struct.new(:saved?, :message)
  
  def initialize(portfolio_repository: Portfolio)
    @portfolio_repository = portfolio_repository
  end
  
  def call(request_params)
    item = @portfolio_repository.new(request_params)    
    
    if item.save
     Response.new(true, 'A coisa correu bem :)')
    else
     Response.new(false, 'A coisa correu mal :)')
    end    
  end
end

class ShowPortFolio
  def initialize(portfolio_repository: Portfolio)
    @portfolio_repository = portfolio_repository
  end
  
  def call
    @portfolio_repository.my_lastest_work # scope where created_at within 90 days
    @portfolio_repository.map do |portfolio_item|
      {
        id:   portfolio_item.id,
        name: portfolio_item.name
      }
    end
  end
end

class Portfolio < ApplicationRecord
  validates_presence_of :title, :body, :main_image, :thumb_image
  
  def show
   @portolio = ShowPortFolio.new.call
  end

  def create    
    request_params = params.require(:portfolio).permit(:title, :subtitle, :body)
    
    response = CreatePortFolioItem.new.call(request_params)
    
    respond_to do |format|
      if response.saved?
        format.html { redirect_to portfolios_path, notice: response.message }
        format.html { render :new }
      end
    end
  end
end