When models have bigint columns with values such as 1456299399553483799, they often get converted to slightly different numbers like 1456299399553483800 when using the as_json method.
Is there a simple or predefined method to automatically convert these big integers to strings during serialization in order to prevent truncation?
Here's a potential solution - I made an addition to the following code snippet as an initializer:
# config/initializers/bigint_serializer.rb
class Integer
def as_json(options = nil)
self > 2147483647 ? self.to_s : self
end
end
This modification alters the default functionality of Numeric#as_json found at https://github.com/rails/rails/blob/v5.1.4/activesupport/lib/active_support/core_ext/object/json.rb#L95, converting numbers larger than a 4-byte signed max int into strings.
It's worth noting that you could potentially use a larger integer value before resorting to string conversion - possibly up to 9007199254740991. However, I kept it as a maximum 4-byte int since I didn't require smaller integers to be stored as strings (referenced in What is JavaScript's highest integer value that a Number can go to without losing precision?)
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