First Create application as follows
rails new apiStack --api --database=postgresql
In controller folder create api folder inside api folder create v1 folder
generate new controller for product
rails g controller api/v1/products index show --no-helper --no-assets --no-template-engine --no-test-framework
generate product model
rails g model product name:string brand:string price:string description:string --no-helper --no-assets --no-template-engine --no-test-framework
in db/seeds.rb add following
Product.create([
{
name:"Quite Comfort 35",
brand:"Bose",
price:"$279.99",
description:"Wireless Bluetooth HeadPhone,Noise Cancelling,with Alexa voice control-black"
}
])
create & run mibgration
rake db:create
rake db:migrate
save seed data
rake db:seed
edit product controller as
class Api::V1::ProductsController < ApplicationController
def index
products = Product.all
render json:products,status:200
end
def create
product = Product.new(
name:params[:name],
brand:params[:brand],
price:params[:price],
description:params[:description])
if product.save
render json:product,status:200
else
render json:{error:"Error creating product"}
end
end
def show
product = Product.find_by(id:params[:id])
if product
render json:product,status:200
else
render json:{error:"Product not found!"}
end
end
def update
product = Product.find_by(id:params[:id])
product.name = params[:name]
product.brand = params[:brand]
product.price = params[:price]
product.description = params[:description]
if product.save
render json:product,status:200
else
render json:{error:"Error Updating product"}
end
end
def destroy
if Product.destroy(params[:id])
render json:{message:"Deleted Product"}
else
render json:{error:"Error Deleting product"}
end
end
def by_brand_name
products = Product.where(brand:params[:name])
if products
render json:products,status:200
else
render json:{error:"Product not found!"}
end
end
end
In config/routes.rb edit as following
Rails.application.routes.draw do
namespace :api do
namespace :v1 do
resources:products,only:[:index,:show,:create,:update,:destroy]
get "products/brand/:name",to:"products#by_brand_name"
end
end
# Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
# Reveal health status on /up that returns 200 if the app boots with no exceptions, otherwise 500.
# Can be used by load balancers and uptime monitors to verify that the app is live.
get "up" => "rails/health#show", as: :rails_health_check
# Defines the root path route ("/")
# root "posts#index"
end
then run application as
rails s
Test API CAlls as following
a) GET ALL
curl --location 'http://localhost:3001/api/v1/products/'
b) Create Product
curl --location 'http://localhost:3001/api/v1/products' \
--header 'Content-Type: application/json' \
--data ' {
"name": "32 Inch LCD",
"brand": "TOSHIBA",
"price": "$500.00 USD",
"description": "Amazing LCD"
}'
3) Find By Id
curl --location 'http://localhost:3001/api/v1/products/2'
4) Update Product
curl --location --request PUT 'http://localhost:3001/api/v1/products/1' \
--header 'Content-Type: application/json' \
--data '{
"name": "PS4.0",
"brand": "Sony.0",
"price": "$500.00 USD",
"description": "NNextGen Gaming Console"
}'
5) Delete Product
curl --location --request DELETE 'http://localhost:3001/api/v1/products/3'
4) Find By brand
curl --location 'http://localhost:3001/api/v1/products/brand/Bose'
GitHub URL:https://github.com/gitsangramdesai/ror-crud
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