Overloading with nulls

[davemitchell]

I was expecting to be able to "unset" a property in an overriding config file. For example, consider the following:

In config/settings.yml
name: Admin
email: [email protected]

In config/settings/development.yml
name: Nobody
email: null

However, it looks like instead of unsetting the value, the derived property is untouched.
That is, the above case yields:
Settings.name # => Nobody
Settings.email # => [email protected]

Rather than what I was expecting:
Settings.name # => Nobody
Settings.email # => nil

Bug, or feature?

[tonyla]

The reason this is happening is this gem vendor'ed the deep_merge gem

vendor/deep_merge.rb:72
if source.nil? || (!source.is_a?(FalseClass) && source.respond_to?(:blank?) && source.blank?); return dest; end

As you can see it will just skip over any overrides that are false or blank. IMHO this is incorrect and has been fixed in the original gem located here.

https://github.com/danielsdeleo/deep_merge

I just added this dependency to my Gemfile and rails_config will just use the loaded gem instead of the vendored version.

[davemitchell]

Cool, thanks!

[toncid]

Hello,

What's the status of this issue? It's still occurring and overriding with a blank value doesn't affect the original value.

Thanks!

[pkuczynski]

There is an open PR on deep merge gem: danielsdeleo/deep_merge#20

[pkuczynski]

I made a mistake. In fact, danielsdeleo/deep_merge#33 solves this issue, not danielsdeleo/deep_merge#20