Method: Im::Loader::Config#on_unload

Defined in:
lib/im/loader/config.rb

#on_unload(cpath = :ANY, &block) ⇒ Object

Configure a block to be invoked right before a certain constant is removed. Supports multiple callbacks, and if there are many, they are executed in the order in which they were defined.

loader.on_unload("Country") do |klass, _abspath|
  klass.clear_cache
end

Can also be configured for any removed constant:

loader.on_unload do |cpath, value, abspath|
  # ...
end

Raises:

  • (TypeError) 


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# File 'lib/im/loader/config.rb', line 259

def on_unload(cpath = :ANY, &block)
  raise TypeError, "on_unload only accepts strings" unless cpath.is_a?(String) || cpath == :ANY

  mutex.synchronize do
    (on_unload_callbacks[cpath] ||= []) << block
  end
end