bit.ly rails copy

index.html.erb

<h1>Link shortener</h1>

<%= form_for(Link.new, url: link_path) do |f| %>
  <%= f.text_field :original_url %>
  <%= f.submit "Create short link" %>
<% end %>

links_controller.rb

class LinksController < ApplicationController
    def index
    end
  
    def show
      @link = Link.find(params[:id])
    end
  
    def go_to_link
      link = Link.find_by_hash_value(params[:hash])
      if !link.original_url.include?("http")
        redirect_to "https://#{link.original_url}"
      else
        redirect_to link.original_url 
      end
    end 
  
    def create
      @link = Link.new(link_params)
      respond_to do |format|
        if @link.save
          format.html  { redirect_to(link_show_path(@link)) }
          format.json  { render :json => @link, :status => :created, :location => @link }
        else
          format.html  { render :action => "index" }
          format.json  { render :json => @link.errors, :status => :unprocessable_entity }
        end
      end
      @link.hash_value = @link.id.to_s(36)
      @link.save
    end
  
    private 
  
    def link_params
      params.require(:link).permit(:original_url)
    end 
end  

routes.rb

Rails.application.routes.draw do
    root to: 'links#index'
    get 'links/:id', to: 'links#show', as: 'link_show'
    post 'link', to: 'links#create'
    get '/:hash', to: 'links#go_to_link', as: 'go_to_link'
end