Passing arguments from one controller to another in ruby on rails

Question

I want to pass an argument from one controller to another in rails. This is first controller:

def create
@grouptorepo = Grouptorepo.new(params[:grouptorepo])
if @grouptorepo.save
  fileUpdate
  redirect_to create_usermailinglist_path, :group_id => @grouptorepo.group_id, :notice => "Group to repo relation created!"
else 
     render "new"
   end
end

And this is the second one:

def create
@g = params[:group_id]
@users = Usertogroup.where("group_id = ?", @g).first

@usermailinglist.user_id = @users.user_id

  if @usermailinglist.save
    redirect_to repositories_path, :notice => "Relation Created!"
  else
    render "new"
  end
end

@g is always nil I have no idea why.

redirect_to should redirect to a get action. But :create is a post action. what is the use case here? — itz2k13
– itz2k13, Commented Jun 3, 2013 at 19:23
after assigning group to repository admin will have an option to see if users in that group want to get mail notifications about the repository. — Sławomir Kwaśniewski
– Sławomir Kwaśniewski, Commented Jun 3, 2013 at 19:38

MrYoshiji · Accepted Answer · 2013-06-03 19:29:46Z

1

You have a syntax problem with the create_usermailinglist_path helper:

redirect_to create_usermailinglist_path(:group_id => @grouptorepo.group_id)

Also, if you want the flash[:notice]

if @grouptorepo.save
  fileUpdate
  redirect_to(create_usermailinglist_path(:group_id => @grouptorepo.group_id), :notice => "Group to repo relation created!")
else 
  render "new"
end

edited Jun 3, 2013 at 19:29

answered Jun 3, 2013 at 19:23

MrYoshiji

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5 Comments

Sławomir Kwaśniewski Over a year ago

Thanks for help but it still does not work. undefined method user_id' for nil:NilClass app/controllers/usermailinglists_controller.rb:10:in create' Line 10 is this: @usermailinglist.user_id = @users.user_id

MrYoshiji Over a year ago

@users seems to refer to several users, not only one. You probably meant @user ?

Sławomir Kwaśniewski Over a year ago

it doesn't matter because it is only name. After changing it to @user it still doesn't work

Sławomir Kwaśniewski Over a year ago

ok i made some errors in syntax. Your answer helped me a lot thanks!

RajG Over a year ago

@MrYoshiji I find you here again! Greetings.

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