How to exclude field from toJson serialization?

[AlexanderBykin]

Hi

Currently JsonKey annotation have ignore parameter, but it's generalized for both fromJson and toJson.
The idea is to have a control over which fields can be serialized via toJson method and then sent over internet.

Could there be implemented additional parameter bool? excludeToJson ?

[JulianSwales]

I'd actually like the above and one step further.. I have a backend SQL database that on Inserts has some Not Null with default database fields. So whilst I'm using this solution, toJson converts to a null value as it should when it's a nullable field, but if it's null on the data side I'd like to exclude the field in the toJson..
So I need the option above for things like the id field that's automatically generated on insert, but also an option to dynamically exclude fields based on their value.

[kevmoo]

Duplicate of #569

Trying to align all of these requests into one place!

[kevmoo]

I have a (draft) PR out on this. I'd LOVE (early) feedback about if this works for what folks need here: #1256

I still need to do some documentation and testing...

[kevmoo]

@JulianSwales – please open a separate issue for your request!