Scaffold Sandbox

Scaffold

Try the scaffold generator:

rails generate scaffold task title:string description:text complete:boolean

Compare the output with the draft:resource generator's output.

Start your server and visit /tasks. Test it out.

Do you understand every line of scaffold? Ask lots of questions.

Validations

Add a presence validation to the title column of tasks. Test it out.

Devise

Add Devise and try generating a Devise model.

rails g devise user first_name:string last_name:string

This does something similar to rails g draft:account, but a lot better. Try out the current_user helper method that Devise provides.

• Add a navbar with sign up, sign in, edit profile, and sign out links.
• While we're at it, add flash messages to the application layout.
• Make the necessary changes to allow first_name and last_name to be set via the sign up/edit profile forms.

Add a foreign key column

rails g migration AddUserIdToTasks user:belongs_to

Add association accessors

• A user has many tasks.
  • When a user is destroyed, destroy its tasks.
• A task belongs to a user.

Update the create action

Try out the create action. It won't work right away — why?

Fix it.

Filter tasks#index

Only display the signed in user's tasks on the home page.

Add tasks_count to User

• Add the column:

  rails g migration AddTasksCountToUsers tasks_count:integer
  

• Add the :counter_cache option to belongs_to:

  belongs_to :user, counter_cache: true

Better redirects

• Make the tasks#create, tasks#update, and tasks#destroy actions redirect to /tasks#index instead of tasks#show.