Can I custom diffable's behaviour by just comparing obj's attributes?

[tony612]

I have a custom matcher for rails's AR like this:

RSpec::Matchers.define :has_same_attributes_as do |expected|
  ignored = %w[id updated_at created_at]
  match do |actual|
    actual.attributes.except(*ignored) == expected.attributes.except(*ignored)
  end

  failure_message do |actual|
    "Expected strength of #{expected.attributes.except(*ignored)}, but had #{actual.attributes.except(*ignored)}"
  end

  diffable
end

I just want to compare the attributes except id created_at updated_at, but when I use diffable it still returns the diff about excepted obj and actual obj instead of their attributes.

Is there any way to solve this? thx

[myronmarston]

Is there any way to solve this? thx

Not currently. There's been a long standing discussion about custom differs (#97) that would allow you to do things like this, though.