NoMethodError rails

Question

I am building a side project rails app. One feature I am trying to implement is a text_field where a user submits a youtube link, and that creates an embedded video to be displayed on their own page. I am running into the NoMethodError when i go to /users/2 , i was hoping you guys could give a newbie a hand:

/users/show.html.erb

<h1>Users#show</h1>
<p>Find me in app/views/users/show.html.erb</p>

<%= render partial: 'shared/track_form' %>

views/shared/_track_form.html.erb:

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

the error: undefined method 'model_name' for NilClass:Class

track.rb

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

  validates :content, presence: true
end

I have a tracks controller, but I think it is trying to use the Users Controller..

anymore code or info that you need let me know, thank you.

is @track created in the show action of your users controller? — Ghar, Jun 05 '13 at 01:40

Sagar.Patil · Answer 1 · 2013-06-05T11:00:03.850

What problem are you facing?? If your problem is related to NoMethodError only then let me know the more details like when its occurring and error report i.e. console part.

If your problem is with youtube part then this is your answer:

<iframe width='450' height='250' src='youtube_source' frameborder='0' allowfullscreen></iframe>

Enter this code in your view part and replace youtube_source with your youtube_url

If you are using youtube url directly from url region then you have to do some customization with url.

E.g.

Normal youtube url from url region:

http://www.youtube.com/watch?v=h5euwZEE4Mo

And in iframe tag we require url like this:

http://www.youtube.com/embed/h5euwZEE4Mo

You can see the difference in both links (embed and watch?v)

Basically one thing is conman in both link i.e. the code at the end h5euwZEE4Mo. So you need to extract this code from url, for extracting the code you can use this.

video_url = (/([\w-]{11})/.match(url)).to_s

Then you can use this url in iframe link this.

<iframe width='450' height='250' src='http://www.youtube.com/embed/<%=video_url%>' frameborder='0' allowfullscreen></iframe>

NoMethodError rails

1 Answers1