Initialgram

In this app, we'll put together all the things we've learned to create a service where users can upload pictures, follow other users to see their pictures, comment on pictures, and favorite pictures.

Topics covered include:

• File uploads with CarrierWave
• Authentication and authorization with Devise
• Customizing Bootstrap with Less
• Advanced model associations
• Customizing variable route segment parameters

Devise Helpers

Named routes

• new_user_registration_path
• edit_user_registration_path
• new_user_session_path
• destroy_user_session_path (HTTP Verb 'DELETE')

Bread and butter helper methods

• user_signed_in?
• current_user

Predefined filter method

• authenticate_user! to require that someone (anyone) be signed in
• Most of the time, you still have to define your own.

If necessary, direct cookie access

• user_session

Authorization

• Make it so that users cannot modify or destroy other users
• Make it so that users cannot modify or destroy other users' pictures
• Make it so that users cannot create, modify or destroy other users' follows

Miscellaneous

• A user's home feed should be the pictures#index action. Their show page should be their own pictures only.
• A user should be able to follow/unfollow another user by clicking a link on the other user's show page.
• A user should not be able to follow another user twice.
• What are some ways we could mix in a user's own pictures into the home feed?