Is this the correct way to set up has many with multiple associations?
- by user323763
I'm trying to set up a new project for a music site. I'm learning ROR and am a bit confused about how to make join models/tables. Does this look right?
I have users, playlists, songs, and comments. Users can have multiple playlists. Users can have multiple comments on their profile. Playlists can have multiple songs. Playlists can have comments. Songs can have comments.
class CreateTables < ActiveRecord::Migration
def self.up
create_table :users do |t|
t.string :login
t.string :email
t.string :firstname
t.string :lastname
t.timestamps
end
create_table :playlists do |t|
t.string :title
t.text :description
t.timestamps
end
create_table :songs do |t|
t.string :title
t.string :artist
t.string :album
t.integer :duration
t.string :image
t.string :source
t.timestamps
end
create_table :comments do |t|
t.string :title
t.text :body
t.timestamps
end
create_table :users_playlists do |t|
t.integer :user_id
t.integer :playlist_id
t.timestamps
end
create_table :playlists_songs do |t|
t.integer :playlist_id
t.integer :song_id
t.integer :position
t.timestamps
end
create_table :users_comments do |t|
t.integer :user_id
t.integer :comment_id
t.timestamps
end
create_table :playlists_comments do |t|
t.integer :playlist_id
t.integer :comment_id
t.timestamps
end
create_table :songs_comments do |t|
t.integer :song_id
t.integer :comment_id
t.timestamps
end
end
def self.down
drop_table :playlists
drop_table :comments
drop_table :songs_comments
drop_table :users_comments
drop_table :users_playlists
drop_table :users
drop_table :playlists
drop_table :songs
drop_table :playlists
end
end
