Hi, I'm Nicholas Johnson!

software engineer / trainer / AI enthusiast

Social Media Integration


  • Create a person using the scaffold generator
  • Show rake:db:migrate
  • Set the root URL to people#index
  • Show the resources routes
  • Show the person_params method
  • Show validation


  • Create a profile object using the scaffold generator with name and description fields
  • Talk about bloated user models
  • Create a belongs_to relationship by adding the foreign key
  • Show rake db:migrate:reset
  • Show an after hook to create and destroy the profile
  • Talk about REST
  • Create profile controller with edit (GET) and update (POST) methods

Update Person Show

  • Add the profile to the person show
  • Talk about partials - extract into a partial
  • Talk about layouts - demonstrate a layout
  • Talk about assets - demonstrate an SCSS asset


  • Adjust your person/show.html.erb to show all the fields of the profile.
  • Improve the output of the person/show.html.erb page a little.
  • Improve the output of the person/index.html.erb page. Remove the html table.
  • Create a header for your site in application.html.erb.
  • Extract your header into a partial.
  • Extend your profile with a field of your choice. Display it on the person/show.html.erb page. Modify the profile migration and use rake db:migrate:redo to load it in.


  • Create a session controller with new, create and destroy methods
  • Add the user id to the session on create
  • Get the current_user in a before_filter on application_controller
  • Create a helper to check login and redraw the top bar and admin links
  • Create a not_authorised method in application_controller to redirect to login if the user clicks person#show
  • Create a filter on the Person method


  • Attempt to implement the session#destroy method (it should remove the user ID from the session)
  • Add a top nav bar to your site. It should have a link to your profile, and a link to the index of people.
  • Add a link to edit your profile to the header.
  • Why do you think storing the User ID in the session might be problematic? Can you think of a better approach?

Further Exercise

Further Further Exercise

  • Create a Status object, so the user can set their current status.
  • The person has_many :statuses
  • The status belongs_to :person
  • Show a has_many method