Route definition in routes.rb in Ruby on Rails - Mini Project: Build & Apply

Route definition in routes.rb

📖 Scenario: You are building a simple blog application using Ruby on Rails. You need to define routes so that users can visit pages to see all posts, view a single post, create a new post, and edit existing posts.

🎯 Goal: Define routes in the config/routes.rb file to connect URL paths to controller actions for posts.

📋 What You'll Learn

Create a root route that points to the posts#index action

Define a route for GET /posts to list all posts

Define a route for GET /posts/:id to show a single post

Define a route for GET /posts/new to show the new post form

Define a route for GET /posts/:id/edit to show the edit form

💡 Why This Matters

🌍 Real World

Defining routes is essential in Rails apps to connect URLs to the code that handles requests, like showing pages or submitting forms.

💼 Career

Rails developers must know how to configure routes to build web applications that respond correctly to user navigation and actions.

1

Set up the root route

In the config/routes.rb file, write a line to set the root route to the posts#index action.

Ruby on Rails

# Your code here to set root route

Need a hint?

The root route uses the root method followed by the controller and action in quotes.

2

Add route for listing all posts

Add a route for GET /posts that maps to the posts#index action using the get method.

Ruby on Rails

Rails.application.routes.draw do
  root 'posts#index'
  # Add route for GET /posts here

Need a hint?

Use get '/posts', to: 'posts#index' to define this route.

3

Add routes for showing, creating, and editing posts

Add routes for these paths and actions using get:

• GET /posts/:id to posts#show
• GET /posts/new to posts#new
• GET /posts/:id/edit to posts#edit

Ruby on Rails

Rails.application.routes.draw do
  root 'posts#index'
  get '/posts', to: 'posts#index'
  # Add routes for show, new, and edit actions here

Need a hint?

Use get with the path and to: option for each route.

4

Complete the routes file

Ensure the config/routes.rb file has all the routes inside the Rails.application.routes.draw do ... end block exactly as specified.

Ruby on Rails

Rails.application.routes.draw do
  root 'posts#index'
  get '/posts', to: 'posts#index'
  get '/posts/:id', to: 'posts#show'
  get '/posts/new', to: 'posts#new'
  get '/posts/:id/edit', to: 'posts#edit'
  # Confirm all routes are inside the block

Need a hint?

Make sure all routes are inside the Rails.application.routes.draw do ... end block.