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rails--rails/activesupport/lib/active_support/option_merger.rb
Lauro Caetano db5d26c9d7 Fix error when using with_options with lambda.
It was causing error when using `with_options` passing a lambda as its
last argument.

    class User < ActiveRecord::Base
      with_options dependent: :destroy do |assoc|
        assoc.has_many :profiles, -> { where(active: true) }
      end
    end

It was happening because the `option_merger` was taking the last
argument and checking if it was a Hash. This breaks the HasMany usage,
because its last argument can be a Hash or a Proc.

As the behavior described in this test:
https://github.com/rails/rails/blob/master/activesupport/test/option_merger_test.rb#L69
the method will only accept the lambda, this way it will keep the expected behavior. See 9eaa0a34
2014-04-03 10:26:37 -03:00

25 lines
746 B
Ruby

require 'active_support/core_ext/hash/deep_merge'
module ActiveSupport
class OptionMerger #:nodoc:
instance_methods.each do |method|
undef_method(method) if method !~ /^(__|instance_eval|class|object_id)/
end
def initialize(context, options)
@context, @options = context, options
end
private
def method_missing(method, *arguments, &block)
if arguments.first.is_a?(Proc)
proc = arguments.pop
arguments << lambda { |*args| @options.deep_merge(proc.call(*args)) }
else
arguments << (arguments.last.respond_to?(:to_hash) ? @options.deep_merge(arguments.pop) : @options.dup)
end
@context.__send__(method, *arguments, &block)
end
end
end