Class: Rack::Parameter::Rule

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/param.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(message, &block) ⇒ Rule

Returns a new instance of Rule.



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# File 'lib/rack/param.rb', line 47

def initialize message, &block
  @block = block
  @message = message
end

Class Method Details

.rule(message, &block) ⇒ Object 



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# File 'lib/rack/param.rb', line 52

def self.rule message, &block
  new message, &block
end

Instance Method Details

#validate(param, value, error_msg = nil) ⇒ Object 



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# File 'lib/rack/param.rb', line 56

def validate param, value, error_msg=nil
  return (error_msg || @message).sub('$',"`#{param.to_s}`").sub('#',"`#{value.to_s}`") unless @block.call(param,value)
end