Passing post data to other pages in Sinatra - ruby

Question

This seems to work fine:
views/index.haml:
%form{:method => 'POST' :action => '/'}
%label{:for => 'name'} Name:
%input{:type => 'text, :value => #values[:name] || ""}
%input{:type => 'submit'}
app.rb:
post '/' do
#values = params
haml :review
end
views/review.rb
Hello #{params[:name]}!
However, when I try to send my post-data to the same view on a different URL I get an error, or in other words:
app.rb:
post '/' do
#values = params
redirect '/review'
end
get '/review' do
#values = params
haml :review
end
The data is not going through, but no error is raised.
How do I send the post-data across pages like this? Ideally, I do not want to create a database.

Answer 1

You can store the parameters in a session or specify the query string explicitly. Browser Redirect from Sinatra Documentation
As specified in the documentation, you may use sessions or convert the POST params to a query string and use it in the redirect method. A crude example would be:
Say the POST params hash inside the '/' block is:
{
:name => "Whatever",
:address => "Wherever"
}
This hash can be made into a string like so:
query = params.map{|key, value| "#{key}=#{value}"}.join("&")
# The "query" string now is: "name=Whatever&address=Wherever"
Now use this inside the post '/' do
redirect to("/review?#{query}")