method

with

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What's this?

with(**attributes) public

Set and restore public attributes around a block.

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

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.

Show source

# File activesupport/lib/active_support/core_ext/object/with.rb, line 24
  def with(**attributes)
    old_values = {}
    begin
      attributes.each do |key, value|
        old_values[key] = public_send(key)
        public_send("#{key}=", value)
      end
      yield
    ensure
      old_values.each do |key, old_value|
        public_send("#{key}=", old_value)
      end
    end
  end

with

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