Class: HashValidator::Validator::LambdaValidator

Inherits:
Base
  • Object
show all
Defined in:
lib/hash_validator/validators/lambda_validator.rb

Defined Under Namespace

Classes: InvalidArgumentCount

Instance Attribute Summary

Attributes inherited from Base

#name

Instance Method Summary collapse

Methods inherited from Base

#validate

Constructor Details

#initialize ⇒ LambdaValidator 



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# File 'lib/hash_validator/validators/lambda_validator.rb', line 4

def initialize
  super("_lambda")  # The name of the validator, underscored as it won't usually be directly invoked (invoked through use of validator)
end

Instance Method Details

#error_message ⇒ Object 



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# File 'lib/hash_validator/validators/lambda_validator.rb', line 20

def error_message
  "is not valid"
end

#should_validate?(rhs) ⇒ Boolean 



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# File 'lib/hash_validator/validators/lambda_validator.rb', line 8

def should_validate?(rhs)
  if rhs.is_a?(Proc)
    if rhs.arity == 1
      true
    else
      raise HashValidator::Validator::LambdaValidator::InvalidArgumentCount.new("Lambda validator should only accept one argument, supplied lambda accepts #{rhs.arity}.")
    end
  else
    false
  end
end

#valid?(value, lambda) ⇒ Boolean 



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# File 'lib/hash_validator/validators/lambda_validator.rb', line 24

def valid?(value, lambda)
  lambda.call(value)
rescue
  false
end