Any programmer can answer this in 2 sec, but I'm stumped.

rubyonrails-talk
1

I've just started working with Rails. And I can't figure out what seems to be the easiest thing imaginable. I need to send @ferry.id from a view in ferry_controller...

<%= link_to 'Add new schedule', {:controller => 'schedule', :action => 'new', ferry_id => @ferry.id }%></d>

to a method in schedule_controller...

def new     @schedule = Schedule.new end

and have that value survive into the 'new' view where it will be returned in Schedule.new(params[:schedule]).

How is this done? I'm must be utterly simple but I can't figure it out.

Gavin

2

Hey Gavin,

You can create an instance variable the same as you do with the schedule. @ferry_id = params[:ferry_id]

If the ferry_id is part of the schedule, then you might want to create the Schedule object with the ferry id @schedule = Schedule.new :ferry_id => params[:ferry_id]

In either case you'll need a hidden tag on the new page, so the param gets passed into the create action. If you do things the second way you just do <%= f.hidden_field :ferry_id %>

and it'll be slurped up in params[:schedule]

Pat

3

Hey Pat

Thanks for the quick reply. I'm still not sure how the @ferry_id travels from my ferry_controller's view to the schedule_controller. Is it something like this:

<%= link_to 'Add new schedule', {:controller => 'schedule', :action => 'new', ferry_id => @ferry.id }%>

then this:

def new(*args)     @schedule = Schedule.new :ferry_id => params[:ferry_id] end

Something stills feels awkward about it.

Gavin

4

That's precisely it, except you'll use :ferry_id in the link_to call of course.

How does it feel awkward to you?

Pat

5

Hey! It works!

I came from C# and .net and it seems to me that the syntax in Ruby and Rails is less clear. I've only been at it for a week though...probably just need more time to let it soak in.

Thanks for the help, Pat.

Gavin