Class: Elasticsearch::DSL::Search::Filters::HasChild

Inherits:
Object
  • Object
show all
Includes:
BaseComponent
Defined in:
lib/elasticsearch/dsl/search/filters/has_child.rb

Overview

A filter which returns parent documents for children documents matching a query or a filter

Examples:

Return articles where John has commented


search do
  query do
    filtered do
      filter do
        has_child do
          type 'comment'
          query do
            match author: 'John'
          end
        end
      end
    end
  end
end

See Also:

Instance Method Summary collapse

Methods included from BaseComponent

included, #initialize

Instance Method Details

#filter(*args, &block) ⇒ self

DSL method for building the ‘filter` part of the query definition

Returns:

  • (self) 


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# File 'lib/elasticsearch/dsl/search/filters/has_child.rb', line 65

def filter(*args, &block)
  @filter = block ? Elasticsearch::DSL::Search::Filter.new(*args, &block) : args.first
  self
end

#query(*args, &block) ⇒ self

DSL method for building the ‘query` part of the query definition

Returns:

  • (self) 


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# File 'lib/elasticsearch/dsl/search/filters/has_child.rb', line 56

def query(*args, &block)
  @query = block ? Elasticsearch::DSL::Search::Query.new(*args, &block) : args.first
  self
end

#to_hash ⇒ Hash

Converts the query definition to a Hash

Returns:

  • (Hash) 


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# File 'lib/elasticsearch/dsl/search/filters/has_child.rb', line 74

def to_hash
  hash = super
  if @query
    _query = @query.respond_to?(:to_hash) ? @query.to_hash : @query
    hash[self.name].update(query: _query)
  end
  if @filter
    _filter = @filter.respond_to?(:to_hash) ? @filter.to_hash : @filter
    hash[self.name].update(filter: _filter)
  end
  hash
end