gem 'sunspot_rails'
gem 'sunspot_solr' # optional pre-packaged Solr distribution for use in development

class Post < ActiveRecord::Base
  searchable do
    text :title, :body
    text :comments do
      comments.map { |comment| comment.body }
    end

    boolean :featured
    integer :blog_id
    integer :author_id
    integer :category_ids, :multiple => true
    double  :average_rating
    time    :published_at
    time    :expired_at

    string  :sort_title do
      title.downcase.gsub(/^(an?|the)/, '')
    end
  end
end

Post.search do
  fulltext 'best pizza'

  with :blog_id, 1
  with(:published_at).less_than Time.now
  order_by :published_at, :desc
  paginate :page => 2, :per_page => 15
  facet :category_ids, :author_id
end

# All posts with a `text` field (:title, :body, or :comments) containing 'pizza'
Post.search { fulltext 'pizza' }

# Posts with pizza, scored higher if pizza appears in the title
Post.search do
  fulltext 'pizza' do
    boost_fields :title => 2.0
  end
end

# Posts with pizza, scored higher if featured
Post.search do
  fulltext 'pizza' do
    boost(2.0) { with(:featured, true) }
  end
end

# Posts with pizza *only* in the title
Post.search do
  fulltext 'pizza' do
    fields(:title)
  end
end

# Posts with pizza in the title (boosted) or in the body (not boosted)
Post.search do
  fulltext 'pizza' do
    fields(:body, :title => 2.0)
  end
end

# Posts with the exact phrase "great pizza"
Post.search do
  fulltext '"great pizza"'
end

# One word can appear between the words in the phrase, so "great big pizza"
# also matches, in addition to "great pizza"
Post.search do
  fulltext '"great pizza"' do
    query_phrase_slop 1
  end
end

# Matches documents with great and pizza, and scores documents more
# highly if the terms appear in a phrase in the title field
Post.search do
  fulltext 'great pizza' do
    phrase_fields :title => 2.0
  end
end

# Matches documents with great and pizza, and scores documents more
# highly if the terms appear in a phrase (or with one word between them)
# in the title field
Post.search do
  fulltext 'great pizza' do
    phrase_fields :title => 2.0
    phrase_slop   1
  end
end

# Posts with a blog_id of 1
Post.search do
  with(:blog_id, 1)
end

# Posts with an average rating between 3.0 and 5.0
Post.search do
  with(:average_rating, 3.0..5.0)
end

# Posts with a category of 1, 3, or 5
Post.search do
  with(:category_ids, [1, 3, 5])
end

# Posts published since a week ago
Post.search do
  with(:published_at).greater_than(1.week.ago)
end

# Posts not in category 1 or 3
Post.search do
  without(:category_ids, [1, 3])
end

# All examples in "positive" also work negated using `without`

# Passing an empty array is equivalent to a no-op, allowing you to replace this...
Post.search do
  with(:category_ids, id_list) if id_list.present?
end

# ...with this
Post.search do
  with(:category_ids, id_list)
end

# Posts that do not have an expired time or have not yet expired
Post.search do
  any_of do
    with(:expired_at).greater_than(Time.now)
    with(:expired_at, nil)
  end
end

# Posts with blog_id 1 and author_id 2
Post.search do
  all_of do
    with(:blog_id, 1)
    with(:author_id, 2)
  end
end

# Posts scoring with any of the two fields.
Post.search do
  any do
    fulltext "keyword1", :fields => :title
    fulltext "keyword2", :fields => :body
  end
end

Post.search do
  any_of do
    with(:blog_id, 1)
    all_of do
      with(:blog_id, 2)
      with(:category_ids, 3)
    end
  end
  
  any do
    all do
      fulltext "keyword", :fields => :title
      fulltext "keyword", :fields => :body
    end
    all do
      fulltext "keyword", :fields => :first_name
      fulltext "keyword", :fields => :last_name
    end
    fulltext "keyword", :fields => :description
  end
end

# Posts with blog_id 1 and 'pizza' in the title
Post.search do
  with(:blog_id, 1)
  fulltext("pizza")
end

search = Post.search do
  fulltext "pizza"
end

# Imagine there are 60 *total* results (at 30 results/page, that is two pages)
results = search.results # => Array with 30 Post elements

search.total           # => 60

results.total_pages    # => 2
results.first_page?    # => true
results.last_page?     # => false
results.previous_page  # => nil
results.next_page      # => 2
results.out_of_bounds? # => false
results.offset         # => 0

search = Post.search do
  fulltext "pizza"
  paginate :page => 2
end

# Again, imagine there are 60 total results; this is the second page
results = search.results # => Array with 30 Post elements

search.total           # => 60

results.total_pages    # => 2
results.first_page?    # => false
results.last_page?     # => true
results.previous_page  # => 1
results.next_page      # => nil
results.out_of_bounds? # => false
results.offset         # => 30

search = Post.search do
  fulltext "pizza"
  paginate :page => 1, :per_page => 50
end

search = Post.search do
  fulltext "pizza"
  paginate :cursor => "*"
end

results = search.results

# Results will contain cursor for the next page
results.next_page_cursor # => "AoIIP4AAACxQcm9maWxlIDEwMTk="

# Imagine there are 60 *total* results (at 30 results/page, that is two pages)
results.current_cursor # => "*"
results.total_pages    # => 2
results.first_page?    # => true
results.last_page?     # => false

search = Post.search do
  fulltext "pizza"
  paginate :cursor => "AoIIP4AAACxQcm9maWxlIDEwMTk="
end

results = search.results

# Again, imagine there are 60 total results; this is the second page
results.next_page_cursor # => "AoEsUHJvZmlsZSAxNzY5"
results.current_cursor   # => "AoIIP4AAACxQcm9maWxlIDEwMTk="
results.total_pages      # => 2
results.first_page?      # => false
# Last page will be detected only when current page contains less then per_page elements or contains nothing
results.last_page?       # => false

# Posts that match 'pizza' returning counts for each :author_id
search = Post.search do
  fulltext "pizza"
  facet :author_id
end

search.facet(:author_id).rows.each do |facet|
  puts "Author #{facet.value} has #{facet.count} pizza posts!"
end

# Posts that match 'pizza' and author with id 42
# Returning counts for each :author_id (even those not in the search result)
search = Post.search do
  fulltext "pizza"
  author_filter = with(:author_id, 42)
  facet :author_id, exclude: [author_filter]
end

search.facet(:author_id).rows.each do |facet|
  puts "Author #{facet.value} has #{facet.count} pizza posts!"
end

# Posts faceted by ranges of average ratings
search = Post.search do
  facet(:average_rating) do
    row(1.0..2.0) do
      with(:average_rating, 1.0..2.0)
    end
    row(2.0..3.0) do
      with(:average_rating, 2.0..3.0)
    end
    row(3.0..4.0) do
      with(:average_rating, 3.0..4.0)
    end
    row(4.0..5.0) do
      with(:average_rating, 4.0..5.0)
    end
  end
end

# e.g.,
# Number of posts with rating within 1.0..2.0: 2
# Number of posts with rating within 2.0..3.0: 1
search.facet(:average_rating).rows.each do |facet|
  puts "Number of posts with rating within #{facet.value}: #{facet.count}"
end

# Posts faceted by range of average ratings
Sunspot.search(Post) do
  facet :average_rating, :range => 1..5, :range_interval => 1
end

# Order by average rating, descending
Post.search do
  fulltext("pizza")
  order_by(:average_rating, :desc)
end

# Order by relevancy score and in the case of a tie, average rating
Post.search do
  fulltext("pizza")

  order_by(:score, :desc)
  order_by(:average_rating, :desc)
end

# Randomized ordering
Post.search do
  fulltext("pizza")
  order_by(:random)
end

# Order by sum of two example fields: rating1 + rating2
Post.search do
  fulltext("pizza")
  order_by_function(:sum, :rating1, :rating2, :desc)
end

# Order by nested functions: rating1 + (rating2*rating3)
Post.search do
  fulltext("pizza")
  order_by_function(:sum, :rating1, [:product, :rating2, :rating3], :desc)
end

# Order by fields and constants: rating1 + (rating2 * 5)
Post.search do
  fulltext("pizza")
  order_by_function(:sum, :rating1, [:product, :rating2, '5'], :desc)
end

# Order by average of three fields: (rating1 + rating2 + rating3) / 3
Post.search do
  fulltext("pizza")
  order_by_function(:div, [:sum, :rating1, :rating2, :rating3], '3', :desc)
end

class Post < ActiveRecord::Base
  searchable do
    # Denormalized `string` field because grouping can only be performed
    # on string fields
    string(:blog_id_str) { |p| p.blog_id.to_s }
  end
end

# Returns only the top scoring document per blog_id
search = Post.search do
  group :blog_id_str
end

search.group(:blog_id_str).matches # Total number of matches to the query

search.group(:blog_id_str).groups.each do |group|
  puts group.value # blog_id of the each document in the group

  # By default, there is only one document per group (the highest
  # scoring one); if `limit` is specified (see below), multiple
  # documents can be returned per group
  group.results.each do |result|
    # ...
  end
end

# Returns the top 3 scoring documents per blog_id
Post.search do
  group :blog_id_str do
    limit 3
  end
end

# Returns document ordered within each group by published_at (by
# default, the ordering is score)
Post.search do
  group :blog_id_str do
    order_by(:average_rating, :desc)
  end
end

# Facet count is based on the most relevant document of each group
# matching the query (>= Solr 3.4)
Post.search do
  group :blog_id_str do
    truncate
  end

  facet :blog_id_str, :extra => :any
end

class Post < ActiveRecord::Base
  searchable do
    # ...
    latlon(:location) { Sunspot::Util::Coordinates.new(lat, lon) }
  end
end

# Searches posts within 100 kilometers of (32, -68)
Post.search do
  with(:location).in_radius(32, -68, 100)
end

# Searches posts within 100 kilometers of (32, -68) with `bbox`. This is
# an approximation so searches run quicker, but it may include other
# points that are slightly outside of the required distance
Post.search do
  with(:location).in_radius(32, -68, 100, :bbox => true)
end

# Searches posts within the bounding box defined by the corners (45,
# -94) to (46, -93)
Post.search do
  with(:location).in_bounding_box([45, -94], [46, -93])
end

# Orders documents by closeness to (32, -68)
Post.search do
  order_by_geodist(:location, 32, -68)
end

class Photo < ActiveRecord::Base
  searchable do
    text :description
    string :caption, :default_boost => 1.5
    time :created_at
    integer :photo_container_id
  end
end

class PhotoContainer < ActiveRecord::Base
  searchable do
    text :name
    join(:description, :target => Photo, :type => :text, :join => { :from => :photo_container_id, :to => :id })
    join(:caption, :target => Photo, :type => :string, :join => { :from => :photo_container_id, :to => :id })
    join(:photos_created, :target => Photo, :type => :time, :join => { :from => :photo_container_id, :to => :id }, :as => 'created_at_d')
  end
end

PhotoContainer.search do
  with(:caption, 'blah')
  with(:photos_created).between(Date.new(2011,3,1), Date.new(2011,4,1))
  
  fulltext("keywords", :fields => [:name, :description])
end

# ...or

PhotoContainer.search do
  with(:caption, 'blah')
  with(:photos_created).between(Date.new(2011,3,1), Date.new(2011,4,1))
  
  any do
    fulltext("keyword1", :fields => :name)
    fulltext("keyword2", :fields => :description) # will be joined from the Photo model
  end
end

class Tweet < ActiveRecord::Base
  searchable do
    text :keywords
    integer :profile_id
  end
end

class Rss < ActiveRecord::Base
  searchable do
    text :keywords
    integer :profile_id
  end
end

class Profile < ActiveRecord::Base
  searchable do
    text :name
    join(:keywords, :prefix => "tweet", :target => Tweet, :type => :text, :join => { :from => :profile_id, :to => :id })
    join(:keywords, :prefix => "rss", :target => Rss, :type => :text, :join => { :from => :profile_id, :to => :id })
  end
end

Profile.search do
  any do
    fulltext("keyword1 keyword2", :fields => [:tweet_keywords]) do
      minimum_match 1
    end
    
    fulltext("keyword3", :fields => [:rss_keywords])
  end
end

# ...produces:
# sort: "score desc", fl: "* score", start: 0, rows: 20,
# fq: ["type:Profile"],
# q: "(_query_:"{!join from=profile_ids_i to=id_i v=$qTweet91755700 fq=$fqTweet91755700}" OR _query_:"{!join from=profile_ids_i to=id_i v=$qRss91753840 fq=$fqRss91753840}")",
# qTweet91755700: "_query_:"{!edismax qf='keywords_text' mm='1'}keyword1 keyword2"", fqTweet91755700: "type:Tweet",
# qRss91753840: "_query_:"{!edismax qf='keywords_text'}keyword3"", fqRss91753840: "type:Rss"

class Post < ActiveRecord::Base
  searchable do
    # ...
    text :body, :stored => true
  end
end

search = Post.search do
  fulltext "pizza" do
    highlight :body
  end
end

# Will output something similar to:
# Post #1
#   I really love *pizza*
#   *Pizza* is my favorite thing
# Post #2
#   Pepperoni *pizza* is delicious
search.hits.each do |hit|
  puts "Post ##{hit.primary_key}"

  hit.highlights(:body).each do |highlight|
    puts "  " + highlight.format { |word| "*#{word}*" }
  end
end

search = Post.search do
  stats :average_rating
end

puts "Minimum average rating: #{search.stats(:average_rating).min}"
puts "Maximum average rating: #{search.stats(:average_rating).max}"

search = Post.search do
  stats :average_rating, :blog_id
end

search = Post.search do
  stats :average_rating do
    facet :featured
  end
end

search.stats(:average_rating).facet(:featured).rows do |row|
  puts "Minimum average rating for featured=#{row.value}: #{row.min}"
end

search = Post.search do
  stats :average_rating do
    facet :featured
  end
  stats :blog_id do
    facet :average_rating
  end
end

#Posts with pizza, scored higer (square promotion field) if is_promoted
Post.search do
  fulltext 'pizza' do
    boost(function {sqrt(:promotion)}) { with(:is_promoted, true) }
  end
end

class Post < ActiveRecord::Base
  searchable do
    # The :more_like_this option must be set to true
    text :body, :more_like_this => true
  end
end

post = Post.first

results = Sunspot.more_like_this(post) do
  fields :body
  minimum_term_frequency 5
end

class Post < ActiveRecord::Base
  searchable do
    text :title, :boost => 5.0
    text :body
  end
end

class Post < ActiveRecord::Base
  searchable do
    text :body, :stored => true
  end
end

# Retrieving stored contents without hitting the database
Post.search.hits.each do |hit|
  puts hit.stored(:body)
end

# Using #results pulls in the records from the object-relational
# mapper (e.g., ActiveRecord + a SQL server)
Post.search.results.each do |result|
  puts result.body
end

# Using #hits gives back all information requested from Solr, but does
# not load the object from the object-relational mapper
Post.search.hits.each do |hit|
  puts hit.stored(:body)
end

Post.search.each_hit_with_result do |hit, result|
  # ...
end

# On a class itself
Person.reindex
Sunspot.commit # or commit(true) for a soft commit (Solr4)

# On mixed objects
Sunspot.index [post1, item2]
Sunspot.index person3
Sunspot.commit # or commit(true) for a soft commit (Solr4)

# With autocommit
Sunspot.index! [post1, item2, person3]

Sunspot.session = Sunspot::SessionProxy::ThreadLocalSessionProxy.new

Post.search do
  adjust_solr_params do |params|
    params[:q] += " AND something_s:more"
  end
end