Multi-model index example

[gangster]

Hi there. I'm trying to piece together how defining and querying a multi-model index might work in Chewy. Is there an example somewhere I can check out and if not, what would a quick and dirty one look like?

Thanks!

[pyromaniac]

Hey! The basic thing is: one model - one type defined inside the index. Like:

class AutocompleteIndex < Chewy::Index
  define_type City do
    field :name
  end

  define_type Country do
    field :name
  end
end

AutocompleteIndex.query(match: {name: 'Singapore'}).to_a # will return country and city

# And don't forget about updating:
class City < ActiveRecord::Base
  update_index 'autocomplete#city', :self
end

class Country < ActiveRecord::Base
  update_index 'autocomplete#country', :self
end

[pyromaniac]

And try to check out http://www.toptal.com/ruby-on-rails/elasticsearch-for-ruby-on-rails-an-introduction-to-chewy as well

[gangster]

Awesome, thank you!

[gangster]

One more question, and I apologize in advance, I am new to Elastic Search so I'm still trying to get my head around it, and how Chewy's interface into it works. So, given the following index:

class OrganizationsIndex < Chewy::Index
  settings analysis: {
    analyzer: {
      standard: {
        type: 'standard'
      }
    }
  }
  define_type ::Organization.all do
    field :id, :name, :slug, :website, :city, :state, :zip, :country
    field :phone, :mission
    field :created_at, type: :date
    field :updated_at, type: :date
    field :tags, value: ->{ tags.map(&:name) }
  end
end

Say I have an array of string values for tags. And I want to filter Organizations based on the presence of a specific tag. For this example, say the tags are ["one", "two", "three"] and I want fetch all Organizations in the index that contain the tag "one". How is that done with Chewy?

Thanks again!

[pyromaniac]

OrganizationsIndex.filter { tags == ['one'] }.to_a
OrganizationsIndex.filter { tags == variable }.to_a
OrganizationsIndex.filter { tags == o{variable} }.to_a # in case of variable is not in current scope
OrganizationsIndex.filter(terms: {tags: ['one']}).to_a
OrganizationsIndex.filter(terms: {tags: variable}).to_a

All the examples are equivalent and produces terms filter.

http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-terms-filter.html