Method: Object#with

Defined in:

activesupport/lib/active_support/core_ext/object/with.rb

#with(**attributes) ⇒ Object

Set and restore public attributes around a block.

client.timeout # => 5
client.with(timeout: 1) do |c|
  c.timeout # => 1
end
client.timeout # => 5

The receiver is yielded to the provided block.

This method is a shorthand for the common begin/ensure pattern:

old_value = object.attribute
begin
  object.attribute = new_value
  # do things
ensure
  object.attribute = old_value
end

It can be used on any object as long as both the reader and writer methods are public.

# File 'activesupport/lib/active_support/core_ext/object/with.rb', line 26

def with(**attributes)
  old_values = {}
  begin
    attributes.each do |key, value|
      old_values[key] = public_send(key)
      public_send("#{key}=", value)
    end
    yield self
  ensure
    old_values.each do |key, old_value|
      public_send("#{key}=", old_value)
    end
  end
end