Basically I got 3 models(Book,Chapter,Author), and I want to include some of the books and author attributes when indexing chapter.
here is my Chapter.rb
class Chapter < ActiveRecord::Base
belongs_to :book, :counter_cache => true
include Elasticsearch::Model
index_name [Rails.env, model_name.collection.gsub(/\//, '-')].join('_')
mappings do
indexes :id, type: :integer
indexes :title, type: :string
indexes :description, type: :string
indexes :content, type: :string
indexes :updated_at, type: :date # Date example
indexes :book_title
indexes :book_type
indexes :author_name
indexes :book_id
end
def book_title
book.title
end
def book_type
book.book_type
end
def author_name
" #{book.author.firstname} #{book.author.lastname} "
end
def to_indexed_json
to_json methods: [:book_title, :book_type, :author_name]
end
end
http://localhost:9200/development_chapters/_mapping?pretty shows correct mapping
{
"development_chapters" : {
"mappings" : {
"chapter" : {
"properties" : {
"author_name" : {
"type" : "string"
},
"book_title" : {
"type" : "string"
},....
}
}
}
}
}
Then why do I not get author_name, book_title etc... in the search results
<Elasticsearch::Model::Response::Result:0x00000105e393a0 #result=#<Hashie::Mash _id="415" _index="development_chapters" _score=1.0 _source=#<Hashie::Mash book_id=153 content="[\"Explicabo accusantium odit .\"]" created_at="2015-04-22T18:43:58.586Z" description="You can't generate the application without quantifying the cross-platform SDD bandwidth!" id=415 title="Future Communications Orchestrator" updated_at="2015-04-22T18:43:58.586Z"> _type="chapter">>
You are defining wrong serialization method. Elasticsearch::Model searches for method as_indexed_json and you are defining to_indexed_json. In elasticesearch-model gem you can find examples https://github.com/elastic/elasticsearch-rails/blob/master/elasticsearch-model/examples/activerecord_associations.rb#L82
It should look something like this:
def as_indexed_json(options = {})
as_json methods: [:book_title, :book_type, :author_name]
end
Related
I'm going to use elastic search for my ruby on rails project. I get this error when I search some of the word that It's used in my article too much.
NoMethodError (undefined method `highlight' for #<Elasticsearch::Model::Response::Result:0x007f062ed26708>)
i got this in the log production. this is what everything that i did:
in controller:
# POST /search/article
def search
render json: Article.search(params[:query]), each_serializer: ElasticsearchResultsSerializer
end
this is my article.rb model
#default_scope { order('created_at DESC') }
scope :visible, -> { where(enabled: true) }
after_commit on: [:create] do
self.keywords = self.keywords.each {|str| str.force_encoding("UTF-8")}
__elasticsearch__.index_document if self.enabled?
end
after_commit on: [:update] do
self.keywords = self.keywords.each {|str| str.force_encoding("UTF-8")}
__elasticsearch__.update_document if self.enabled?
end
after_commit on: [:destroy] do
__elasticsearch__.delete_document
end
settings index: { number_of_shards: 1, number_of_replicas: 0 }
mappings dynamic: 'false' do
indexes :content, type: "string", index_options: 'offsets'
indexes :title, type: "string"
indexes :description, type: "string"
indexes :category, type: "string"
indexes :created_at, type: "date"
indexes :keywords, type: "string"
end
def self.search(query)
__elasticsearch__.search(
{
query: {
multi_match: {
query: query,
fields: ['title^10', 'content^5', 'description^2', 'keywords', 'category']
}
},
highlight: {
pre_tags: ['<em>'],
post_tags: ['</em>'],
fields: { title: {}, content: {} }
}
}
)
end
def as_indexed_json(options={})
as_json(
only: [:content, :title, :id, :category, :keywords, :description]
)
end
and also i used serializer
class ElasticsearchResultsSerializer < ActiveModel::Serializer
attributes :_id, :highlight, :_score, :_source
def _source
#article = object._index.singularize.capitalize.constantize.find(object._id)
#serializer = "#{object._index.singularize.capitalize}Serializer".constantize
#serializer.new(#article)
end
end
Maybe is a silly observation, but did you tried to change the value
:highlight to :_highlight ?
class ElasticsearchResultsSerializer < ActiveModel::Serializer
attributes :_id, :_highlight, :_score, :_source
def _source
#article = object._index.singularize.capitalize.constantize.find(object._id)
#serializer = "#{object._index.singularize.capitalize}Serializer".constantize
#serializer.new(#article)
end
end
I would try switching fields to:
fields: {
:"*" => {}
}
Just to see if that gets rid of the error. See the following: https://github.com/elastic/elasticsearch-rails/issues/446
I've got an Article model:
class Article < ActiveRecord::Base
include Tire::Model::Search
include Tire::Model::Callbacks
settings default_options do
mapping do
indexes :id, index: :not_analyzed
indexes :roles do
indexes :machine_name, analyzer: 'keyword'
end
indexes :published_at, type: 'date', include_in_all: false
end
end
end
where the default_options is:
index: { store: { type: Rails.env.test? ? :memory : :niofs },
analysis: {
analyzer: {
default: {
tokenizer: "standard",
filter: ["asciifolding", "lowercase", "snowball"],
char_filter: ["html_strip"]
}
}
}
I'm simply trying to search articles while filtering roles, but I don't have any idea how to do so. I've been trying something like that without success:
Tire.search("article") do
query { string 'foo bar baz' }
filter :nested, { path:'roles',
query: {
filtered: {
query: {
match_all: {}
},
filter: {
term:{'roles.machine_name' => ['da']}
}
}
}
}
end
This give me that error:
QueryParsingException[[development-oaciq::application-article] [nested] nested object under path [roles] is not of nested type];
After finding this question, it seems the nested filter wasn't required, it could be done like this:
Tire.search("article") do
query do
string 'foo bar baz'
term 'roles.machine_name', 'test'
end
end
I have a model named Movie that looks like this:
class Movie < ActiveRecord::Base
include Elasticsearch::Model
include Elasticsearch::Model::Callbacks
has_many :actors, after_add: [ lambda {|a,c| a.__elasticsearch__.index_document}],
after_remove: [ lambda {|a,c| a.__elasticsearch__.index_document}]
settings index: {number_of_shards: 1} do
mappings dynamic: 'false' do
indexes :title, analyzer: 'snowball', boost: 100
indexes :actors
end
end
def as_indexed_json(options={})
self.as_json(
include: {
actors: { only: :name}
}
)
end
end
When i do Movie.first.as_indexed_json , I get:
{"id"=>6, "title"=>"Back to the Future ",
"created_at"=>Wed, 03 Dec 2014 22:21:24 UTC +00:00,
"updated_at"=>Fri, 12 Dec 2014 23:40:03 UTC +00:00,
"actors"=>[{"name"=>"Michael J Fox"}, {"name"=>"Christopher Lloyd"},
{"name"=>"Lea Thompson"}]}
but when i do Movie.search("Christopher Lloyd").records.first i get: => nil .
What changes can i make to the index to search movies associated with the searched actor?
I used filtering query to solve this, first I created an ActiveSupport::Concern called searchable.rb, the concern looks like this:
module Searchable
extend ActiveSupport::Concern
included do
include Elasticsearch::Model
include Elasticsearch::Model::Callbacks
index_name [Rails.application.engine_name, Rails.env].join('_')
settings index: { number_of_shards: 3, number_of_replicas: 0} do
mapping do
indexes :title, type: 'multi_field' do
indexes :title, analyzer: 'snowball'
indexes :tokenized, analyzer: 'simple'
end
indexes :actors, analyzer: 'keyword'
end
def as_indexed_json(options={})
hash = self.as_json()
hash['actors'] = self.actors.map(&:name)
hash
end
def self.search(query, options={})
__set_filters = lambda do |key, f|
#search_definition[:post_filter][:and] ||= []
#search_definition[:post_filter][:and] |= [f]
end
#search_definition = {
query: {},
highlight: {
pre_tags: ['<em class="label label-highlight">'],
post_tags: ['</em>'],
fields: {
title: {number_of_fragments: 0}
}
},
post_filter: {},
aggregations: {
actors: {
filter: {bool: {must: [match_all: {}]}},
aggregations: {actors: {terms: {field: 'actors'}}}
}
}
}
unless query.blank?
#search_definition[:query] = {
bool: {
should: [
{
multi_match: {
query: query,
fields: ['title^10'],
operator: 'and'
}
}
]
}
}
else
#search_definition[:query] = { match_all: {} }
#search_definition[:sort] = {created_at: 'desc'}
end
if options[:actor]
f = {term: { actors: options[:taxon]}}
end
if options[:sort]
#search_definition[:sort] = { options[:sort] => 'desc'}
#search_definition[:track_scores] = true
end
__elasticsearch__.search(#search_definition)
end
end
end
I have the above concern in the models/concerns directory.
In movies.rb I have:
class Movie < ActiveRecord::Base
include Searchable
end
In movies_controller.rb I am doing searching on the index action and the action looks like this:
def index
options = {
actor: params[:taxon],
sort: params[:sort]
}
#movies = Movie.search(params[q], options).records
end
Now when i go to http://localhost:3000/movies?q=future&actor=Christopher I get all records which have the word future on their title and has an actor with a name Christopher. You can have more than one filter as shown by the expert template of the example application templates found here .
You can try add method search to your model like this:
class Movie < ActiveRecord::Base
include Elasticsearch::Model
include Elasticsearch::Model::Callbacks
# ...
def self.search(query, options = {})
es_options =
{
query: {
query_string: {
query: query,
default_operator: 'AND',
}
},
sort: '_score',
}.merge!(options)
__elasticsearch__.search(es_options)
end
# ...
end
Here is some examples of method search: http://www.sitepoint.com/full-text-search-rails-elasticsearch/
And now you can search in all your indexed fields.
You need to specify the fields in the the search method, like:
def self.search query
__elasticsearch__.search(
query: {
multi_match: {
query: query,
fields: %w[title actor.name]
}
}
)
end
Try this
indexes :actors do
indexes :name, type: "string"
end
I am using elasticsearch to make my search fast, but unfortunately i don't know the reason why it is returning an empty array of result. Looking forward a help from you guys.
class Post < ActiveRecord::Base
include Tire::Model::Search
include Tire::Model::Callbacks
has_many :attachments, as: :attachable
accepts_nested_attributes_for :attachments, allow_destroy: true
mapping do
indexes :work_type
indexes :title
indexes :location
indexes :industry_type
indexes :key_words
indexes :type
end
after_save { update_index }
def self.search(params)
tire.search(load: true) do
query do
boolean do
must { string params[:query] } if params[:query].present?
must { match :type, params[:type] } if params[:type].present? && params[:type] != "all"
must { match :title, params[:title] } if params[:title].present?
must { match :industry_type, params[:industry_type] } if params[:industry_type].present?
must { match :key_words, params[:key_words] } if params[:key_words].present?
end
end
sort { by :title, 'desc' }
end
end
params = {"utf8"=>"✓",
"type"=>"Job",
"query"=>"",
"location"=>"",
"post"=>{"work_type"=>""},
"action"=>"index",
"controller"=>"posts"}
I'm trying to index a geo_point field in Elasticsearch with the Tire gem. Here is my Tire mapping for my ActiveRecord model :
class Availability < ActiveRecord::Base
belongs_to :user
attr_accessible :date, :latitude, :longitude
include Tire::Model::Search
include Tire::Model::Callbacks
tire do
mapping do
indexes :id, type: 'integer', index: 'not_analysed'
indexes :user_id, type: 'integer', index: 'not_analysed'
indexes :user_firstname, type: 'string', as: 'user_firstname'
indexes :user_lastname, type: 'string', as: 'user_lastname'
indexes :user_level, type: 'integer', as: 'user_level'
indexes :date, type: 'date'
indexes :location, type: 'geo_type', as: 'location'
end
end
# def location
# "#{latitude},#{longitude}"
# end
def location
[longitude.to_f, latitude.to_f]
end
def user_firstname
user.firstname
end
def user_lastname
user.lastname
end
def user_level
user.level
end
end
When I create the mapping (bundle exec rake environment tire:import CLASS=Availability FORCE=true), Elasticsearch seems to ignore the geo_point type for the location field.
Here is the result of the http://localhost:9200/availabilities/_mapping call :
{
availabilities: {
availability: {
properties: {
date: {...},
id: {...},
location: {
type: "double"
},
user_firstname: {...},
user_id: {...},
user_lastname: {...},
user_level: {...}
}
}
}
}
The location field is indexed as an array of double on the documents (results of http://localhost:9200/availabilities/_search) :
{
id: 8,
...
location: [
2.301643,
48.780651
]
}
When I change the location method to :
def location
"#{latitude},#{longitude}"
end
Which is another solution to index a geo_point field according to the documentation (http://www.elasticsearch.org/guide/reference/mapping/geo-point-type.html), the result for the location mapping is :
location: {
type: "string"
},
And of course the location field is indexed as a string :
{
id: 4,
...
location: "48.780651,2.301643"
}
Any idea why the geo_point is ignored in my mapping ?
Thanks !
The location index type was mistyped.
You used geo_type instead of geo_point:
indexes :location, type: 'geo_point', as: 'location'