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I came across the create_additions option in rubys JSON.parse docs but I can't seem to find any documentation about it.
The rdoc describes the option with:
create_additions: If set to false, the Parser doesn't create additions even if a matching class and ::create_id was found. This option defaults to true.
Out of curiosity, can anyone explain what this option actually does and what this "additions" feature of JSON.parse is anyways?
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The JSON.parse() method parses a JSON string, constructing the JavaScript value or object described by the string. An optional reviver function can be provided to perform a transformation on the resulting object before it is returned.
JSON parsing is the process of converting a JSON object in text format to a Javascript object that can be used inside a program. In Javascript, the standard way to do this is by using the method JSON.
Use the JavaScript function JSON.parse() to convert text into a JavaScript object: const obj = JSON.parse('{"name":"John", "age":30, "city":"New York"}'); Make sure the text is in JSON format, or else you will get a syntax error.
Once we have the file loaded, we can parse the JSON data using the JSON. parse method. This method will create a Ruby hash with the JSON keys. Once loaded, we can proceed to work with the data like an ordinary Ruby hash.
The "additions" are additions to pure JSON. If a hash has the json_class key (customizable with JSON.create_id), it is deserialized as that class instead of a plain hash.
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