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

Returns a new instance of LambdaValidator.



2
3
4
 
# File 'lib/hash_validator/validators/lambda_validator.rb', line 2

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 



18
19
20
 
# File 'lib/hash_validator/validators/lambda_validator.rb', line 18

def error_message
  'is not valid'
end

#should_validate?(rhs) ⇒ Boolean

Returns:

  • (Boolean) 


6
7
8
9
10
11
12
13
14
15
16
 
# File 'lib/hash_validator/validators/lambda_validator.rb', line 6

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

Returns:

  • (Boolean) 


22
23
24
25
26
 
# File 'lib/hash_validator/validators/lambda_validator.rb', line 22

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