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class ApplicationController < ActionController::Base
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end
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class AutomobilesController < ApplicationController
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before_action :set_automobile, only: [:show, :edit, :update, :destroy]
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# GET /automobiles
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# GET /automobiles.json
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def index
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@automobiles = Automobile.includes(:manufacture).all
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end
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# GET /automobiles/1
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# GET /automobiles/1.json
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def show
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end
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# GET /automobiles/new
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def new
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@automobile = Automobile.new
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end
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# GET /automobiles/1/edit
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def edit
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end
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# POST /automobiles
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# POST /automobiles.json
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def create
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@automobile = Automobile.new(automobile_params)
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respond_to do |format|
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if @automobile.save
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format.html { redirect_to @automobile, notice: 'Automobile was successfully created.' }
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format.json { render :show, status: :created, location: @automobile }
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else
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format.html { render :new }
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format.json { render json: @automobile.errors, status: :unprocessable_entity }
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end
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end
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end
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# PATCH/PUT /automobiles/1
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# PATCH/PUT /automobiles/1.json
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def update
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respond_to do |format|
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if @automobile.update(automobile_params)
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format.html { redirect_to @automobile, notice: 'Automobile was successfully updated.' }
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format.json { render :show, status: :ok, location: @automobile }
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else
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format.html { render :edit }
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format.json { render json: @automobile.errors, status: :unprocessable_entity }
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end
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end
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end
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# DELETE /automobiles/1
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# DELETE /automobiles/1.json
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def destroy
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@automobile.destroy
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respond_to do |format|
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format.html { redirect_to automobiles_url, notice: 'Automobile was successfully destroyed.' }
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format.json { head :no_content }
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end
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end
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private
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# Use callbacks to share common setup or constraints between actions.
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def set_automobile
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@automobile = Automobile.includes(:parts).find(params[:id])
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end
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# Never trust parameters from the scary internet, only allow the white list through.
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def automobile_params
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params.require(:automobile).permit(:manufacture_id, :name, :year, part_ids: [])
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end
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end
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class ManufacturesController < ApplicationController
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before_action :set_manufacture, only: [:show, :edit, :update, :destroy]
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# GET /manufactures
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# GET /manufactures.json
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def index
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@manufactures = Manufacture.all
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end
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# GET /manufactures/1
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# GET /manufactures/1.json
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def show
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end
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# GET /manufactures/new
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def new
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@manufacture = Manufacture.new
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end
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# GET /manufactures/1/edit
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def edit
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end
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# POST /manufactures
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# POST /manufactures.json
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def create
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@manufacture = Manufacture.new(manufacture_params)
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respond_to do |format|
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if @manufacture.save
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format.html { redirect_to @manufacture, notice: 'Manufacture was successfully created.' }
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format.json { render :show, status: :created, location: @manufacture }
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else
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format.html { render :new }
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format.json { render json: @manufacture.errors, status: :unprocessable_entity }
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end
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end
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end
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# PATCH/PUT /manufactures/1
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# PATCH/PUT /manufactures/1.json
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def update
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respond_to do |format|
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if @manufacture.update(manufacture_params)
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format.html { redirect_to @manufacture, notice: 'Manufacture was successfully updated.' }
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format.json { render :show, status: :ok, location: @manufacture }
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else
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format.html { render :edit }
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format.json { render json: @manufacture.errors, status: :unprocessable_entity }
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end
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end
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end
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# DELETE /manufactures/1
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# DELETE /manufactures/1.json
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def destroy
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@manufacture.destroy
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respond_to do |format|
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format.html { redirect_to manufactures_url, notice: 'Manufacture was successfully destroyed.' }
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format.json { head :no_content }
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end
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end
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private
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# Use callbacks to share common setup or constraints between actions.
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def set_manufacture
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@manufacture = Manufacture.find(params[:id])
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end
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# Never trust parameters from the scary internet, only allow the white list through.
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def manufacture_params
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params.require(:manufacture).permit(:name)
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end
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end
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class RecallsController < ApplicationController
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before_action :set_recall, only: [:show, :edit, :update, :destroy]
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# GET /recalls
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# GET /recalls.json
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def index
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@recalls = Recall.all
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end
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# GET /recalls/1
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# GET /recalls/1.json
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def show
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end
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# GET /recalls/new
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def new
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@recall = Recall.new
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end
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# GET /recalls/1/edit
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def edit
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end
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# POST /recalls
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# POST /recalls.json
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def create
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@recall = Recall.new(recall_params)
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respond_to do |format|
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if @recall.save
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format.html { redirect_to @recall, notice: 'Recall was successfully created.' }
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format.json { render :show, status: :created, location: @recall }
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else
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format.html { render :new }
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format.json { render json: @recall.errors, status: :unprocessable_entity }
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end
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end
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end
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# PATCH/PUT /recalls/1
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# PATCH/PUT /recalls/1.json
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def update
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respond_to do |format|
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if @recall.update(recall_params)
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format.html { redirect_to @recall, notice: 'Recall was successfully updated.' }
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format.json { render :show, status: :ok, location: @recall }
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else
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format.html { render :edit }
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format.json { render json: @recall.errors, status: :unprocessable_entity }
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end
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end
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end
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# DELETE /recalls/1
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# DELETE /recalls/1.json
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def destroy
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@recall.destroy
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respond_to do |format|
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format.html { redirect_to recalls_url, notice: 'Recall was successfully destroyed.' }
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format.json { head :no_content }
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end
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end
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private
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# Use callbacks to share common setup or constraints between actions.
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def set_recall
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@recall = Recall.find(params[:id])
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end
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# Never trust parameters from the scary internet, only allow the white list through.
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def recall_params
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params.require(:recall).permit(:part_id, :description)
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end
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end
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class WelcomeController < ApplicationController
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def index
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end
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end
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module ApplicationHelper
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end
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module AutomobilesHelper
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end
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module ManufacturesHelper
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end
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class ApplicationJob < ActiveJob::Base
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# Automatically retry jobs that encountered a deadlock
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# retry_on ActiveRecord::Deadlocked
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# Most jobs are safe to ignore if the underlying records are no longer available
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# discard_on ActiveJob::DeserializationError
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end
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class ApplicationMailer < ActionMailer::Base
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default from: 'from@example.com'
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layout 'mailer'
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end
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class ApplicationRecord < ActiveRecord::Base
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self.abstract_class = true
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end
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class Automobile < ApplicationRecord
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belongs_to :manufacture
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has_many :automobile_parts, dependent: :destroy
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has_many :parts, through: :automobile_parts
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end
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class AutomobilePart < ApplicationRecord
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belongs_to :automobile
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belongs_to :part
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end
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class Manufacture < ApplicationRecord
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has_many :automobiles, dependent: :destroy
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end
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class Part < ApplicationRecord
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has_many :automobile_parts
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has_many :automobiles, through: :automobile_parts
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has_many :recalls
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end
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class Recall < ApplicationRecord
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belongs_to :part
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def number_of_affected_automobiles
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part.automobiles.size # + 1
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end
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end
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module Automobiles
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class CalculatePrice
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# Automobiles::CalculatePrice.new(automobile).call
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# Automobiles::CalculatePrice.call(automobile)
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def self.call(automobile)
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new(automobile).call
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end
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attr_accessor :automobile
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def initialize(automobile)
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@automobile = automobile
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end
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def call
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automobile.parts.sum(:price)
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end
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end
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end
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module Automobiles
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class CalculateWeight
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# Automobiles::CalculateWeight.new(automobile).call
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# Automobiles::CalculateWeight.call(automobile)
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def self.call(automobile)
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new(automobile).call
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end
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attr_accessor :automobile
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def initialize(automobile)
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@automobile = automobile
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end
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def call
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automobile.parts.sum(:weight)
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end
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end
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end
