1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
# Licensed to Elasticsearch B.V. under one or more contributor
# license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright
# ownership. Elasticsearch B.V. licenses this file to you under
# the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
require 'ansi'
require 'sqlite3'
require 'active_record'
require 'elasticsearch/model'
ActiveRecord::Base.logger = ActiveSupport::Logger.new(STDOUT)
ActiveRecord::Base.establish_connection( adapter: 'sqlite3', database: ":memory:" )
ActiveRecord::Schema.define(version: 1) do
create_table :articles do |t|
t.string :title
t.date :published_at
t.timestamps
end
end
class Article < ActiveRecord::Base
include Elasticsearch::Model
include Elasticsearch::Model::Callbacks
article_es_settings = {
index: {
analysis: {
filter: {
autocomplete_filter: {
type: "edge_ngram",
min_gram: 1,
max_gram: 20
}
},
analyzer:{
autocomplete: {
type: "custom",
tokenizer: "standard",
filter: ["lowercase", "autocomplete_filter"]
}
}
}
}
}
settings article_es_settings do
mapping do
indexes :title
indexes :suggestable_title, type: 'string', analyzer: 'autocomplete'
end
end
def as_indexed_json(options={})
as_json.merge(suggestable_title: title)
end
end
Article.__elasticsearch__.client = Elasticsearch::Client.new log: true
# Create index
Article.__elasticsearch__.create_index! force: true
# Store data
Article.delete_all
Article.create title: 'Foo'
Article.create title: 'Bar'
Article.create title: 'Foo Foo'
Article.__elasticsearch__.refresh_index!
# Search and suggest
fulltext_search_response = Article.search(query: { match: { title: 'foo'} } )
puts "", "Article search for 'foo':".ansi(:bold),
fulltext_search_response.to_a.map { |d| "Title: #{d.title}" }.inspect.ansi(:bold, :yellow),
""
fulltext_search_response_2 = Article.search(query: { match: { title: 'fo'} } )
puts "", "Article search for 'fo':".ansi(:bold),
fulltext_search_response_2.to_a.map { |d| "Title: #{d.title}" }.inspect.ansi(:bold, :red),
""
autocomplete_search_response = Article.search(query: { match: { suggestable_title: { query: 'fo', analyzer: 'standard'} } } )
puts "", "Article autocomplete for 'fo':".ansi(:bold),
autocomplete_search_response.to_a.map { |d| "Title: #{d.suggestable_title}" }.inspect.ansi(:bold, :green),
""
puts "", "Text 'Foo Bar' analyzed with the default analyzer:".ansi(:bold),
Article.__elasticsearch__.client.indices.analyze(
index: Article.__elasticsearch__.index_name,
field: 'title',
text: 'Foo Bar')['tokens'].map { |t| t['token'] }.inspect.ansi(:bold, :yellow),
""
puts "", "Text 'Foo Bar' analyzed with the autocomplete filter:".ansi(:bold),
Article.__elasticsearch__.client.indices.analyze(
index: Article.__elasticsearch__.index_name,
field: 'suggestable_title',
text: 'Foo Bar')['tokens'].map { |t| t['token'] }.inspect.ansi(:bold, :yellow),
""
require 'pry'; binding.pry;
|
