diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/bigdecimal')
-rw-r--r-- | activesupport/lib/active_support/core_ext/bigdecimal/conversions.rb | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/bigdecimal/conversions.rb b/activesupport/lib/active_support/core_ext/bigdecimal/conversions.rb index dcdb08aea0..d2504302cd 100644 --- a/activesupport/lib/active_support/core_ext/bigdecimal/conversions.rb +++ b/activesupport/lib/active_support/core_ext/bigdecimal/conversions.rb @@ -1,6 +1,29 @@ +require 'yaml' + class BigDecimal #:nodoc: alias :_original_to_s :to_s def to_s(format="F") _original_to_s(format) end + + yaml_as "tag:yaml.org,2002:float" + def to_yaml( opts = {} ) + YAML::quick_emit( nil, opts ) do |out| + # This emits the number without any scientific notation. + # I prefer it to using self.to_f.to_s, which would lose precision. + # + # Note that YAML allows that when reconsituting floats + # to native types, some precision may get lost. + # There is no full precision real YAML tag that I am aware of. + str = self.to_s + if str == "Infinity" + str = ".Inf" + elsif str == "-Infinity" + str = "-.Inf" + elsif str == "NaN" + str = ".NaN" + end + out.scalar( "tag:yaml.org,2002:float", str, :plain ) + end + end end |