Module: NoBrainer::Criteria::First

Extended by:
ActiveSupport::Concern
Defined in:
lib/no_brainer/criteria/first.rb

Instance Method Summary collapse

Instance Method Details

#first ⇒ Object 



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# File 'lib/no_brainer/criteria/first.rb', line 4

def first
  get_one(self)
end

#first! ⇒ Object 



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# File 'lib/no_brainer/criteria/first.rb', line 12

def first!
  first || (raise NoBrainer::Error::DocumentNotFound)
end

#last ⇒ Object 



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# File 'lib/no_brainer/criteria/first.rb', line 8

def last
  get_one(self.reverse_order)
end

#last! ⇒ Object 



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# File 'lib/no_brainer/criteria/first.rb', line 16

def last!
  last || (raise NoBrainer::Error::DocumentNotFound)
end

#sample(n = nil) ⇒ Object 



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# File 'lib/no_brainer/criteria/first.rb', line 20

def sample(n=nil)
  result = run { self.without_ordering.to_rql.sample(n.nil? ? 1 : n) }
  result = result.map(&method(:instantiate_doc))
  n.nil? ? result.first : result
end