track model not being created in my rails app

Question

in my rails app, I am running into an issue. As a heads up I am using devise.

tracks_controller.rb

def new
  @track = Track.new
end

def create
  @track = current_user.tracks.build(params[:content])
  if @track.save
    flash[:success] = "Track created!"
    redirect_to @user 
  else
    render 'static_pages/home'
  end

users_controller.rb

def show
  @user = User.find(params[:id])
  @tracks = @user.tracks
  if signed_in?
    @track  = current_user.tracks.build
  end
end

I am logged in as a current user, and when I try to add a new track (through the current user) it is not saving.. (and instead redirects to root_url)

track.rb

class Track < ActiveRecord::Base
  attr_accessible :content
  belongs_to :user
end

user.rb

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :token_authenticatable, :confirmable,
  # :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
     :recoverable, :rememberable, :trackable, :validatable

  # Setup accessible (or protected) attributes for your model
  attr_accessible :username, :email, :password, :password_confirmation, :remember_me
  # attr_accessible :title, :body

  validates :username, uniqueness: {  case_sensitive: false }

  has_many :tracks, dependent: :destroy

end

shared/_track_form.html.erb

<%= form_for(@track) do |f| %>
<div class="track_field">
    <%= f.text_area :content, placeholder: "Upload a youtube song URL...", :id => "message_area" %>
</div>
<%= f.submit "Post", class: "btn btn-large btn-primary" %>

relavent section for /users/show.html.erb

<div class="span8">
    <% if signed_in? %>
        <section>
            <%= render 'shared/track_form' %>
        </section>
    <% end %>

I believe the issue is in my TracksController #create method, however I just can't figure it out. any help is greatly appreciated, thanks!

Answer 1

In your controller create action change

@track = current_user.tracks.build(params[:content])

to this

@track = current_user.tracks.build(params[:track])

Since you used form_for(@track) the params hash will contain the :content field filled into the form.

The way you have it now the create action cant find the form :content because there isn't a form named content. content is an attribute of the Track model.