Create Ruby and Rails app with Scaffold  Step by step guide :

What is Scaffold:

Scaffold Gernerate Model , view , controller.if you are beginner want to create rails app then this is the simplest form of  create crud (create ,read ,update ,delete) operation.

before starting scaffold you need created rails app click here to know how to create rails  app (for beginners).

now you need to generate scaffold using below command:

rails generate scaffold blog image:string title:string body:text 

output of above command.

Now we have to run migration using rails db:migrate command.

we have succefully created crud with ruby on rails.

run rails routes. 

run your rails app (rails s command).

on http://localhost:3000/blogs you find scaffold output .

click on New blog to create blog.

Now after fill all feild then create blog.

 

Feel free to ask question in comment for more click here