ruby on rails scaffold generator example with belongs to relationship
To generate a scaffold with a "belongs to" relationship in Ruby on Rails, follow these steps:
Step 1: Open your terminal and navigate to your Rails application directory.
Step 2: Run the following command to generate a new scaffold:
rails generate scaffold Book title:string author:string
This command will create a new scaffold named "Book" with two attributes: "title" and "author".
Step 3: Next, generate another scaffold for the related model (let's say "Genre") using the following command:
rails generate scaffold Genre name:string
Step 4: Now, you need to create a relationship between the "Book" and "Genre" models. Open the app/models/book.rb
file and add the following line:
belongs_to :genre
This line specifies that a book belongs to a genre.
Step 5: Similarly, open the app/models/genre.rb
file and add the following line:
has_many :books
This line specifies that a genre has many books.
Step 6: Run the database migration to create the necessary tables:
rails db:migrate
Step 7: Finally, start your Rails server by running:
rails server
You can now access the application in your browser and see the generated scaffold with the "belongs to" relationship.
Please note that the above steps assume you have a basic understanding of Ruby on Rails and have it properly installed and configured on your system.