Class: Virtus::Attribute::DefaultValue::FromCallable Private

Inherits:
Virtus::Attribute::DefaultValue show all
Defined in:
lib/virtus/attribute/default_value/from_callable.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Represents default value evaluated via a callable object

Instance Attribute Summary

Attributes inherited from Virtus::Attribute::DefaultValue

#attribute, #value

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Virtus::Attribute::DefaultValue

build, #initialize

Methods included from DescendantsTracker

#add_descendant, #descendants

Constructor Details

This class inherits a constructor from Virtus::Attribute::DefaultValue

Class Method Details

.handle?(attribute, value) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Return if the class can handle the value

Returns:



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# File 'lib/virtus/attribute/default_value/from_callable.rb', line 15

def self.handle?(attribute, value)
  value.respond_to?(:call)
end

Instance Method Details

#evaluate(instance) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Evaluates the value via value#call

Parameters:

Returns:

  • (Object) —

    evaluated value



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# File 'lib/virtus/attribute/default_value/from_callable.rb', line 26

def evaluate(instance)
  @value.call(instance, @attribute)
end