Module: AttrHelper

Included in:
DataPackage::Base
Defined in:
lib/attr_helper.rb,
lib/attr_helper/base_attr.rb,
lib/attr_helper/required_attr.rb,
lib/attr_helper/serialization.rb

Defined Under Namespace

Modules: ClassMethods, Serialization Classes: BaseAttr, RequiredAttr

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(klass) ⇒ Object 



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# File 'lib/attr_helper.rb', line 6

def self.included(klass)
  klass.send :extend, ClassMethods
end

Instance Method Details

#attr_missing?(name) ⇒ Boolean 



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# File 'lib/attr_helper.rb', line 86

def attr_missing?(name)
  missing_attributes.any?{|a| a.name == name}
end

#attr_present?(name) ⇒ Boolean 



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# File 'lib/attr_helper.rb', line 90

def attr_present?(name)
  !attr_missing?(name)
end

#attr_required?(name) ⇒ Boolean 



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# File 'lib/attr_helper.rb', line 82

def attr_required?(name)
  required_attributes.any?{|a| a.name == name}
end

#attributes ⇒ Object 



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# File 'lib/attr_helper.rb', line 61

def attributes
  required_attributes + optional_attributes
end

#missing_attributes ⇒ Object 



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# File 'lib/attr_helper.rb', line 75

def missing_attributes
  required_attributes.select do |attribute|
    value = send(attribute.name)
    value.respond_to?(:empty?) ? value.empty? : value.nil?
  end
end

#optional_attributes ⇒ Object 



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# File 'lib/attr_helper.rb', line 71

def optional_attributes
  self.class.optional_attributes
end

#required_attributes ⇒ Object 



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# File 'lib/attr_helper.rb', line 65

def required_attributes
  self.class.required_attributes.select do |attribute|
    attribute.required?(self)
  end
end

#write_attribute(name, value) ⇒ Object 



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# File 'lib/attr_helper.rb', line 94

def write_attribute(name, value)
  self.instance_variable_set("@#{name}", value)
end

#write_attributes(attrs = {}) ⇒ Object 



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# File 'lib/attr_helper.rb', line 98

def write_attributes(attrs = {})
  attrs = attrs.symbolize_keys
  attributes.each do |attribute|
    value = attrs[attribute.key.to_sym] || attribute.default
    self.send("#{attribute.name}=", value) unless value.nil?
  end
end