Basic ferret example

gistfile1.rb

require 'rubygems'
require 'ferret'

# Create the full-text search index

jobs = Job.find(:all, :conditions => ["displayed = 'yes'"])
index = Index::Index.new(:path => 'search_index', :create => true)

jobs.each do |job|
  index << {:id => job.id, :description => job.description}
end


##########################
# In the Sinatra app file
##########################

post '/search' do
  query = params['query']
  index = Index::Index.new(:path => 'search_index')
  result_ids = []
  index.search_each("description:'#{query}'") do |id, score|
    result_ids << index[id][:id]
  end
  @jobs = Job.find(:all, :conditions => {:id => result_ids})
  haml :index
end