Class: Hashie::LazyTrash

Inherits:
Trash
  • Object
show all
Defined in:
lib/hashie-lazy_trash.rb

Overview

A Hashie::Trash with 2 main differences:

1. When trying to set a value that is not defined as a property, the LazyTrash just sllently ignores this value
   (as opposed to Hashie::Trash, which raises an Exception)
2. You can define properties that are to be fetched lazily (on first access), i.e.

     property :user_id
     property :user, lazy: ->{ User.find(user_id) }

   As you can see in this example, the Proc is executed in the context of the Hashie::LazyTrash instance.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.property(property_name, options = {}) ⇒ Object 



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# File 'lib/hashie-lazy_trash.rb', line 17

def self.property(property_name, options = {})
  super

  if options[:lazy]
    lazy_properties[property_name.to_sym] = options[:lazy]
  end
end

Instance Method Details

#[](property) ⇒ Object 



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# File 'lib/hashie-lazy_trash.rb', line 25

def [](property)
  if !super and self.class.lazy_properties.include?(property.to_sym)
    self[property.to_sym] = instance_exec(&self.class.lazy_properties[property.to_sym])
  else
    super
  end
end