Add track/{new,create} with file upload for the track

app/controllers/tracks_controller.rb

@@ -3,6 +3,22 @@ class TracksController < ApplicationController
     @track = Track.find params[:id]
   end
 
+  def new
+    @track = Track.new
+  end
+
+  def create
+    @track = Track.new(:name => params[:track][:name])
+    if params[:track][:file]
+      @track.uploaded_file = params[:track][:file]
+    end
+    if @track.save
+      redirect_to @track
+    else
+      render :new
+    end
+  end
+
   def stream
   end
 end

app/models/track.rb

@@ -1,3 +1,17 @@
 class Track < ActiveRecord::Base
   validates_presence_of :name
+
+  after_create :save_file
+
+  def uploaded_file=(file)
+    @file = file
+  end
+
+  def save_file
+    if @file
+      File.open("#{Rails.root}/data/tracks/#{id}", 'w') do |f|
+        f.write @file.tempfile.read
+      end
+    end
+  end
 end

app/views/playlists/index.html.haml

@@ -1,4 +1,5 @@
 = link_to 'Create playlist', new_playlist_path
+= link_to 'Add a track', new_track_path
 %ul
   - @playlists.each do |p|
     %li

app/views/tracks/new.html.haml

@@ -0,0 +1,6 @@
+= form_for @track, :html => { :multipart => true } do |t|
+  = t.label :name
+  = t.text_field :name
+  = t.label :file
+  = t.file_field :file
+  = t.submit 'Upload'