diff options
Diffstat (limited to 'activesupport/lib')
-rw-r--r-- | activesupport/lib/active_support.rb | 1 | ||||
-rw-r--r-- | activesupport/lib/active_support/array_inquirer.rb | 38 |
2 files changed, 39 insertions, 0 deletions
diff --git a/activesupport/lib/active_support.rb b/activesupport/lib/active_support.rb index 290920dbf8..9af3f8b447 100644 --- a/activesupport/lib/active_support.rb +++ b/activesupport/lib/active_support.rb @@ -59,6 +59,7 @@ module ActiveSupport autoload :StringInquirer autoload :TaggedLogging autoload :XmlMini + autoload :ArrayInquirer end autoload :Rescuable diff --git a/activesupport/lib/active_support/array_inquirer.rb b/activesupport/lib/active_support/array_inquirer.rb new file mode 100644 index 0000000000..0ae534da00 --- /dev/null +++ b/activesupport/lib/active_support/array_inquirer.rb @@ -0,0 +1,38 @@ +module ActiveSupport + # Wrapping an array in an +ArrayInquirer+ gives a friendlier way to check + # its string-like contents: + # + # variants = ActiveSupport::ArrayInquirer.new([:phone, :tablet]) + # + # variants.phone? # => true + # variants.tablet? # => true + # variants.desktop? # => false + # + # variants.any?(:phone, :tablet) # => true + # variants.any?(:phone, :desktop) # => true + # variants.any?(:desktop, :watch) # => false + class ArrayInquirer < Array + def any?(*candidates, &block) + if candidates.none? + super + else + candidates.any? do |candidate| + include?(candidate) || include?(candidate.to_sym) + end + end + end + + private + def respond_to_missing?(name, include_private = false) + name[-1] == '?' + end + + def method_missing(name, *args) + if name[-1] == '?' + any?(name[0..-2]) + else + super + end + end + end +end |