NotBlank

Returns nil if the receiver is empty or blank.

Replace code like this:

return a unless a.blank?
return b unless b.blank?
return c

with this:

a.nb || b.nb || c

Replace code like this:

arr = get_list_of_things.delete_if { |a| a.blank? }
arr.empty? ? nil : arr

with this:

get_list_of_things.nb

Caution : this is not just a simple wrapper around blank? ; when the receiver is Enumerable, nb returns a new Enumerable containing non-blank elements, or nil if there are no non-blank elements. If the receiver is a Hash, nb returns a new hash containing only non-blank values, or nil if there are no non-blank values. Hash#nb does not look at keys.

Add this line to your application's Gemfile:

gem 'not_blank'

And then execute:

$ bundle

Or install it yourself as:

$ gem install not_blank

See spec for more examples.

"".nb       # => nil
" ".nb      # => nil
"\n".nb     # => nil
false.nb    # => nil
[""].nb     # => nil
[false].nb  # => nil
[false, true].nb # => [true]
{ a: nil, b: "", c: false, d: [[nil],[false], [""]] }.nb # => nil

This gem assumes you have a meaningful #blank? method defined for all objects of interest. ActionSupport

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/not_blank. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.

Everyone interacting in the NotBlank project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.