Ruby/Sinatra: Passing a URL variable to an .erb template

Question

I'm using Padrino, and I want to take parameters out of URL and use them in an .erb template.

In my app setup I have:

get '/testpage/:id' do
  userID = params[:id]
  render 'test/index'
end

In my test/ folder I have index.html.erb which is successfully rendered, for a url like http://localhost:9000/testpage/hello123.

However, I've tried printing the params[:userID] on the page with:

<%= @userID %>

The rest of the page renders fine but hello123 isn't anywhere to be found. When I try <%= userID %> I get undefined local variable or method `userID' for #<stuff>

What am I missing here?

Change title: it's padrino specific, not sinatra – somenxavier Jun 12 '22 at 21:49 — somenxavier, Jun 12 '22 at 21:49

score 3 · Accepted Answer · answered Oct 02 '15 at 17:56

3

Just a guess, because I've never used Padrino, but if it works like Rails this may help you:

get '/testpage/:id' do
  @userID = params[:id]
  render 'test/index'
end

answered Oct 02 '15 at 17:56

chadoh

4,343
6
39
64

That was annoyingly simple to fix. Thanks! – JVG Oct 02 '15 at 17:59
I'm glad it was easy, @Jascination! – chadoh Oct 02 '15 at 18:04

score 0 · Answer 2 · answered Jun 12 '22 at 21:47

0

In sinatra, it's just like this (see "Views/Templates" section):

get '/testpage/:id' do |id|
  erb :index, :locals => {:id => id}
end

The template is located in views/index.erb by default. It could be change.

answered Jun 12 '22 at 21:47

somenxavier

1,206
3
20
43

Ruby/Sinatra: Passing a URL variable to an .erb template

2 Answers2