In the docs its mentioned that we can implement the custom data types with jason instead of for: Any. But what if i wanted to write it for some custom attribute like for: [Ecto.Association.NotLoaded] .how can I make it work. This is the code defimpl Jason.Encoder, for: [Ecto.Association.NotLo…

:waving_hand: Try replacing defimpl Jason.Encoder, for: [Ecto.Association.NotLoaded] do with defimpl Jason.Encoder, for: Ecto.Association.NotLoaded do and Jason.encode!() with Jason.Encode.map()

Can you please show a full error and the input you wanted to encode? My assumption is, that you are trying to encode a changeset, and not the actual struct.

it seems like I have to add @derive to few more models to make the code work. But how do i check if my custom encoder is working?

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Custom jason encoder

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script September 5, 2018, 6:06am 3

same error. Works fine for: Any. But throws error for this