ElasticSearch + Tire：OR查询

Question

I have some trouble defining a query with Tire.

What I have:

My documents are events. They have a starts_at date, and a ends_at date. The ends_at date is not required.

What I want:

I want to display upcoming events (for instance). I would define upcoming as the following:

• ends_at date is present AND after Time.now

OR

• ends_at date is not present, AND starts_at is after Time.now

Right now I'm just doing

query do
    boolean do
        must { range :starts_at, { gte: bod } }
    end
end

How can I this OR query?

Answer 1

the only way I can think of right now is to use _missing_ and _exists_ in the string query:

require 'tire'
require 'active_support/core_ext/numeric/time'
require 'active_support/core_ext/date/calculations'
require 'active_support/duration'

Time::DATE_FORMATS.update :lucene => "%Y-%m-%dT%H:%M:%S%z"

Tire.index('events_stackoverflow_demo').delete

class Event
  include Tire::Model::Persistence

  property :title
  property :starts_at, type: 'date'
  property :ends_at,   type: 'date'

  index_name 'events_stackoverflow_demo'
end

Event.create id: 1, title: 'Test 1', starts_at: 2.days.ago, ends_at: 1.days.ago
Event.create id: 2, title: 'Test 2', starts_at: 1.day.ago,  ends_at: 1.day.since
Event.create id: 3, title: 'Test 3', starts_at: 1.day.since

Event.tire.index.refresh

upcoming = Event.search do
  query do
    boolean minimum_number_should_match: 1 do
      should { string "_exists_:ends_at AND ends_at:[#{Time.now.to_s(:lucene)} TO *]"  }
      should { string "_missing_:ends_at AND starts_at:[#{Time.now.to_s(:lucene)} TO *]"  }
    end
  end

  p to_curl

end.results

puts "---"

p upcoming