Class: Array

Inherits:
Object
  • Object
show all
Defined in:
lib/mysql2wrapper/core_ext.rb

Instance Method Summary collapse

Instance Method Details

#select_one_must(&proc) ⇒ Object

Raises:

  • (StandardError) 


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# File 'lib/mysql2wrapper/core_ext.rb', line 3

def select_one_must(&proc)
  result = self.select(&proc)
  raise StandardError, 'no data selected' if result.size == 0
  raise StandardError, "multiple data selected(#{result.size} datas)" if result.size > 1
  result.first
end