Rails - May 2013 - possible to pass two view id's to controller?

I have has_many through for User, Prog and Enrollment models. Idea is that 
User is able to add Prog to his profile and Prog is able to remove 
association from Enrollment or update status attribute. 

  def create
    @prog = Prog.find(params[:id])
    Enrollment.create(user_id: current_user.id, prog_id: @prog.id, status: 
"pending")
    redirect_to @prog, notice: "Programme is added"
  end

   def accept
     @enrollment = Enrollment.find_by_user_id(params[:id]) 
     @enrollment.status = "accepted"
     @enrollment.save!
    redirect_to progs_path, notice: "added"
  end

<% @prog.users.each do |user| %>
<%= link_to "#{user.email} accept", controller:
"/enrollments", action:
"accept", method: "post", id: user.id, id: @prog %>/
<% end %>

I understand that accept method is lack of @prog to find right column in 
Enrollment table, but I don''t undestand how do I pass this id?

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Vitalis wrote in post #1110889:
> <%= link_to "#{user.email} accept", controller:
"/enrollments", action:
> "accept", method: "post", id: user.id, id: @prog %>/
> I understand that accept method is lack of @prog to find right column in
> Enrollment table, but I don''t undestand how do I pass this id?
<%= link_to "#{user.email} accept", controller:
"/enrollments",
  action: "accept", method: "post", id: user.id, prog_id:
@prog.id %>

before_filter :load_prog

def create
  Enrollment.create(user_id: current_user.id, prog_id: @prog.id, status: 
"pending")
  redirect_to @prog, notice: "Programme is added"
end

def accept
  @enrollment.status = "accepted"
  @enrollment.save!
  redirect_to progs_path, notice: "added"
end

private
def load_prog
  @prog = Prog.find(params[:prog_id])
end

If you decide to use a before_filter as shown here make sure you pass 
the Prog ID as "prog_id" for all actions.

P.S. It is generally considered good practice to avoid abbreviations in 
domain objects. What is a "Prog"? Could be Program, could be 
Progression, etc. If you mean "Program" then use "Program"
as your class
name and variable references. There are exceptions to every rule, such 
as Proc objects and abbreviations that are very well understood by 
everyone. it''s still good practice to avoid them whenever there is a 
possibility of ambiguity.

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