Module: ClassX::Validate

Defined in:
lib/classx/validate.rb

Overview

for validatation Hash parameter declaretively.

require 'classx/validate'

class YourClass

  def run params
    validated_prams = Class::Validate.validate params do
      has :x
      has :y, :default => "hoge", :kind_of => Hash
    end

    # do something with params

  end
end

YourClass.new.run(:x => 10) # raise ClassX::AttrRequiredError

Class Method Summary collapse

Class Method Details

.validate(hash, options = {}, &block) ⇒ Object

:doc:



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# File 'lib/classx/validate.rb', line 23

def validate hash, options={}, &block #:doc:
  # FIXME: it's experimental feature for caching validate class.
  # it can use class variable because it use caller[0] as key.
  if options[:cache_key] != false
    options[:cache_key] = caller[0]
  end

  if ( options[:cache_key] )
    @@__validate_cached ||= {}
    klass = @@__validate_cached[options[:cache_key]]
  else
    klass = nil
  end

  unless klass
    klass = Class.new
    klass.class_eval do
      include ::ClassX
      include ::ClassX::Bracketable
    end
    klass.class_eval(&block)

    if options[:cache_key]
      @@__validate_cached[options[:cache_key]] = klass
    end
  end
  klass.new hash
end