Class BigDecimal
In: lib/active_support/core_ext/big_decimal/conversions.rb
lib/active_support/json/encoding.rb
Parent: Object

Methods

as_json   to_d   to_formatted_s   to_s   to_yaml  

Constants

YAML_TAG = 'tag:yaml.org,2002:float'
YAML_MAPPING = { 'Infinity' => '.Inf', '-Infinity' => '-.Inf', 'NaN' => '.NaN' }
DEFAULT_STRING_FORMAT = 'F'

External Aliases

to_s -> _original_to_s

Public Instance methods

A BigDecimal would be naturally represented as a JSON number. Most libraries, however, parse non-integer JSON numbers directly as floats. Clients using those libraries would get in general a wrong number and no way to recover other than manually inspecting the string with the JSON code itself.

That‘s why a JSON string is returned. The JSON literal is not numeric, but if the other end knows by contract that the data is supposed to be a BigDecimal, it still has the chance to post-process the string and get the real value.

to_s(format = DEFAULT_STRING_FORMAT)

Alias for to_formatted_s

This emits the number without any scientific notation. This is better than self.to_f.to_s since it doesn‘t lose precision.

Note that reconstituting YAML floats to native floats may lose precision.

[Validate]