module ClassNames

Public Instance Methods

classnames(*args) click to toggle source

# File lib/classnames.rb, line 2
def classnames(*args)
  args = Array(args)

  args.reduce([]) do |arr, arg|
    if value = format_classnames(arg)
      arr << value
    else
      arr
    end
  end.flatten.join(' ')
end

Private Instance Methods

format_classnames(arg) click to toggle source

# File lib/classnames.rb, line 16
def format_classnames arg
  if arg.is_a?(Hash)
    format_classnames_hash(arg)
  elsif arg.respond_to?(:call)
    arg.call
  else
    arg
  end
end

format_classnames_hash(hsh) click to toggle source

# File lib/classnames.rb, line 26
def format_classnames_hash hsh
  hsh.reduce([]) do |result, kv|
    key, value = kv

    if value
      result.concat([key])
    else
      result
    end
  end
end