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Contents
require 'sinatra/base'
require 'csv'
require 'picky'
require File.expand_path '../logging', __FILE__
class BookSearch < Sinatra::Application
# We do this so we don't have to type
# Picky:: in front of everything.
#
include Picky
# Data source.
#
class Books
def initialize
@csv = CSV.new File.open(File.expand_path("../data/#{PICKY_ENVIRONMENT}/library.csv", __FILE__))
end
def each
instance = Struct.new :id, :title, :author, :year
@csv.each do |row|
yield instance.new *row[0..3]
end
end
end
# Define an index.
#
books_index = Index.new :books do
source { Books.new }
indexing removes_characters: /[^a-z0-9\s\/\-\_\:\"\&\.]/i,
stopwords: /\b(and|the|of|it|in|for)\b/i,
splits_text_on: /[\s\/\-\_\:\"\&\/]/
category :title,
similarity: Similarity::DoubleMetaphone.new(3),
partial: Partial::Substring.new(from: 1) # Default is from: -3.
category :author, partial: Partial::Substring.new(from: 1)
category :year, partial: Partial::None.new
end
# Index and load on USR1 signal.
#
Signal.trap('USR1') do
books_index.reindex # kill -USR1 <pid>
end
# Define a search over the books index.
#
books = Search.new books_index do
searching substitutes_characters_with: CharacterSubstituters::WestEuropean.new, # Normalizes special user input, Ä -> Ae, ñ -> n etc.
removes_characters: /[^a-z0-9\s\/\-\_\&\.\"\~\*\:\,]/i, # Picky needs control chars *"~:, to pass through.
stopwords: /\b(and|the|of|it|in|for)\b/i,
splits_text_on: /[\s\/\-\&]+/
boost [:title, :author] => +3,
[:title] => +1
end
# Route /books to the books search and log when searching.
#
get '/books' do
results = books.search params[:query], params[:ids] || 20, params[:offset] || 0
AppLogger.info results
results.to_json
end
end
Version data entries
22 entries across 22 versions & 1 rubygems