rubyonrails.txt

>>>>>> Ruby On Rails <<<<<<<<<<<

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Keys: controller, model, view, simple rest api
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RubyOnRais (Create Api's Commands):

Make the ApplicationController inherit from ActionController::API instead of ActionController::Base.


Models:

$ rails new rest-api-guide --api --database=postgresql

$ rails generate model User username:string password:string
$ rails generate model Fact user:references fact:string likes:integer

$ rails db:setup
$ rails db:migrate



Controllers:

$ rails g controller api/v1/Users
$ rails g controller api/v1/Facts


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>>>>>>>>>>>>> All Templates <<<<<<<<<<<<<<<<<<<<<


Ruby On Rails:



--> ( Model ) <---

//app/models/article.rb

class Article < ApplicationRecord
  belongs_to :author, default: -> { Current.user }
  has_many :comments

  has_one_attached :avatar
  has_rich_text :content, encrypted: true
  enum status: [ :drafted, :publised ]

  scope :recent, -> { order(created_at: :desc).limit(25)}

  after_save_commit :deliver_later, if: :publised?

  def byline
    "Written by #{author.name} on #{created_at.to_s(:short)}"
  end

  def deliver_later
    Article::DeliveryJob.perform_later self
  end
end




--> ( Controller ) <--

//app/controllers/articles_controller.rb

class ArticleController < ApplicationController

  def index
    @articles = Article.recent
  end

  def show
    @article = Article.find(params[:id])
    fresh_when etag: @article
  end

  def create
    article = Article.create!(article_params)
    redirect_to article
  end

  
  private
    def article_params
      params.require(:article).permit(:title, :content)
    end

end



--> ( Views ) <-- 

//app/views/articles/show.html.erb


<h1><%= @article.title %></h1>

<%= image_tag @article.creator.avatar.url %>
<p><%= @article.content %></p>

<%= link_to "Edit", edit_article_path(@article) if Current.user.admin? %>



--> ( Routes ) <--

//config/routes.rb

Rails.application.routes.draw do
  resource :article do     # /articles, /article/1

    resources :connents    # /articles/1/comments, /comments/1
  end

  root to: "articles#index" # /
end


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>>>> Rails 7 Simple Rest Api <<<<<<<

Table: users


Models:
    rails generate model User

Controller:
    rails generate controller User


    rails routes

  http://localhost:3000
  http://localhost:3000/users


Model: 

class User < ApplicationRecored  
end

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create_table "users", force :: cascade do |t|
  t.string "username"
  t.string "password"
  t.datetime "created_at", null: false
  t.datetime "updated_at", null: false
end


//User Controller 

class UserController < ApplicationController
  skip_before_action :verify_authenticity_token
  #before_action :find_fact, only: [:show, :update, :destroy]

  # GET /users
  def index
     @user = User.all() # find(x) # x = given id
     render json: @user
  end

    # GET /users/id
  def show
    @user = User.find(params[:id])
      if @user        
          render json: @user
      else
        render error: { error: 'Unable to create User.'}, status: 400
      end
  end

    # POST /users
  def create
      @user = User.new(user_params) 
      if @user
        @user.save
          render json: @user
      else
        render error: { error: 'Unable to create User.'}, status: 400
      end
  end

  # PUT /users/id
  def update
      @user = User.find(params[:id])
      if @user
         @user.update(user_params)
          render json: { message: 'User successfully updated.'}, status: 200
      else
        render json: { error: 'Unable to update User.'}, status: 400
      end 
  end

    # DELETE /users/id
  def destroy
      @user = User.find(params[:id])
      if @user
         @user.destroy()
          render json: { message: 'User successfully deleted.'}, status: 200
      else
        render json: { error: 'Unable to delete User.'}, status: 400
      end
  end

    private

  def user_params  
     params.require(:user).permit(:name, :email)  
     #params.permit(:name, :email) 
  end

  #def contact
    #redirect_to action: 'services', id: 2    
  #end
end


---------> End Conroller <----------------------------


Rails.application.routes.draw do
  get '/users', to: "user#index"
  get '/users/:id', to: "user#show"
  get '/users/new', to: "user#new"
  post '/users', to: "user#create"
  get '/users/:id/edit', to: "user#edit"
  put '/users/:id', to: "user#update"
  delete '/users/:id', to: "user#destroy"
end


 -- OR --

 Rails.application.routes.draw do
   resources :users      #OR resource :user
end
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