Module: Validatable

Included in:
Music::Transcription::Meter, Music::Transcription::Note, Music::Transcription::NoteScore, Music::Transcription::Part, Music::Transcription::Program
Defined in:
lib/music-transcription/validatable.rb

Overview

assumes that @checks is defined as an array of no-arg lambdas, each lambda raising an error (with useful msg) when check fails

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#errors ⇒ Object (readonly)

Returns the value of attribute errors.



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# File 'lib/music-transcription/validatable.rb', line 4

def errors
  @errors
end

Instance Method Details

#check_methods ⇒ Object 



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# File 'lib/music-transcription/validatable.rb', line 6

def check_methods; []; end

#invalid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/music-transcription/validatable.rb', line 35

def invalid?
  !self.valid?
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/music-transcription/validatable.rb', line 30

def valid?
  self.validate
  @errors.empty?
end

#validatables ⇒ Object 



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# File 'lib/music-transcription/validatable.rb', line 7

def validatables; []; end

#validate ⇒ Object 



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# File 'lib/music-transcription/validatable.rb', line 9

def validate
  @errors = []
  
  
  check_methods.each do |check_method|
    begin
      send(check_method)
    rescue StandardError => e
      @errors.push e
    end
  end
  
  validatables.each do |v|
    if v.respond_to?(:validate)
      @errors += v.validate
    end
  end
  
  return @errors
end