There are several ways of getting parameters and data into your Sinatra application.

1) URL Options

get '/post/:id' do
  post_id = params[:id]
end

# Several options, period gets interpreted as a separator between the two.
get '/author/:id.:format' do
  author_id = params[:id]
  format = params[:format]
end

# Several options, separated by '/'
get '/author/:author_id/comments/:comment_id' do
  author_id = params[:author_id]
  comment_id = params[:comment_id]
end

2) URL Parameters - the classic ?foo=bar&baz=quux

# this will get the post id out of /author?id=2
get '/author' do
  author_id = params[:id]
end

# Works the same way for the POST method (and DELETE and PUT of course)
post '/author' do
  author_id = params[:id]
end

3) Raw Posted Data - if the POSTed content is in the “application/x-www-form-urlencoded” format, it will get parsed as above, with the params[:id] method of getting the data. But occasionally, you want the whole chunk of raw data. This is useful for images, or big chunks of xml.

post '/data' do
  raw = request.env["rack.input"].read
end

This entry was posted on Sunday, June 15th, 2008 at 1:58 pm and is filed under Programming, Ruby, Sinatra. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.