1. Populate select options based on association options.
2. Assign a FK based on a select box value directly through mass assignment. (post[category_id])
3. Define a belongs_to association writer.
4. Build a form field that will delegate to a belongs_to association writer. (post#category_name=) through controller mass assignment.
5. Define a has_many association writer.
6. Build a form field that will delegate to a has_many association writer. (owner#pet_names=) through controller mass assignment.

In this lab, we're going to make a song library. Our data model looks like this:

• Artist
  • artists have a name (string)
  • artists have many Songs
• Song
  • songs have a title (string)
  • songs belong to an Artist
  • songs belong to a Genre
• Genre
  • genres have a name (string)
  • genres have many songs
• Notes
  • notes have content (string)
  • notes belong to a Song

The base models, controllers, and seed data have been provided for you. The associations have not been wired up.

1. The basic models and such have been made for you.
2. Write app/views/songs/new.html.erb. This form should have:

• A text input box that sets the song's title.
• A text input box for the artist, which autocompletes with existing Artist names.
• A selection box for genre. Users should be able to pick amongst existing genres only.
• Several text input boxes to add notes to the song. These should have the ids song_note_contents_1, song_note_contents_2, and so on for the specs to pass. (You might need to search around for how to pass an array using strong_params!)

There are feature tests!

View Forms And Basic Associations Rails Lab on Learn.co and start learning to code for free.

View Forms and Basic Associations Lab on Learn.co and start learning to code for free.