SolRuby

Using Solr's Ruby output

Solr has an optional Ruby response format that extends its JSON output in the following ways to allow the response to be safely eval'd by Ruby's interpreter:

• Ruby's single quoted strings are used to prevent possible string exploits

  • \ and ' are the only two characters escaped...

  • unicode escapes not used... data is written as raw UTF-8

• nil used for null

• => used as the key/value separator in maps

Here is a simple example of how one may query Solr using the Ruby response format:

require 'net/http'

h = Net::HTTP.new('localhost', 8983)
hresp, data = h.get('/solr/select?q=iPod&wt=ruby', nil)
rsp = eval(data)

puts 'number of matches = ' + rsp['response']['numFound'].to_s
#print out the name field for each returned document
rsp['response']['docs'].each { |doc| puts 'name field = ' + doc['name'] }

Ruby on Rails

• acts_as_solr: A plugin to add full text search capabilities using Solr to ActiveRecord models. nice acts_as_solr tutorial

• acts_as_background_solr: An extension to acts_as_solr moving more processing to the background.

• Flare: A plugin adding faceted browsing, AJAX suggest and more to Rails controllers.

• Searchable: A Rails plugin that provides search integration with ActiveRecord. (an alternative to acts_as_solr)

---

Searchable example:

    class SomeModel
        include Searchable
        index_attr :name, :boost => 2.0
        index_attr :children do |attr|
            attr.name :child
            attr.include :name
        end
    end

Now, to index:

    SomeModel.add_to_index # (happens automatically on save/update/destroy)

And to search:

    SomeModel.search("year:1865", :offset => 0, :limit 20)

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CategoryQueryResponseWriter