Module: DB::Model::Countable

Included in:
Relation, Where
Defined in:
lib/db/model/countable.rb

Instance Method Summary collapse

Instance Method Details

#count(fields = Statement::Count::ALL) ⇒ Object 



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# File 'lib/db/model/countable.rb', line 12

def count(fields = Statement::Count::ALL)
  Statement::Select.new(@model,
    fields: fields,
    where: self.predicate,
  ).to_sql(@context).call do |connection|
    result = connection.next_result
    
    row = result.to_a.first
    
    # Return the count:
    return row.first
  end
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/db/model/countable.rb', line 26

def empty?
  self.count == 0
end