Parameters with rails link_to new_path remote

Question

I have an object title with an association song

In my index of a titles, each title has a link_to button that creates a new title that I would like associated with the same song object. So it's something like this:

link_to "Add Title", new_title_path, remote: true

In the view that has the above code I have the song_id. I can display the form that gets returned when this link is clicked, I can submit the data and create the new title but how do I get the song_id into that form or into the new title?

Answer 1

Add parameter to the link, assuming song is the object

link_to "Add Title", new_title_path(song_id: @title.song_id), remote: true

Now in the new action

def new
  @title = Title.new(song_id: params[:song_id])
end

and finally in the new.html.erb form, add a hidden field tag

<%= f.hidden_field :song_id, @title.song_id %>

Hope this helps!