Caravela.Live.Encoders (Caravela v0.9.2)

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Protocol implementations so Ecto/Decimal types survive the trip from the LiveView socket to a LiveSvelte Svelte component as sensible JSON values instead of struct dumps.

Covers two structs that every generated CRUD page trips over:

  • Decimal — the Ecto :decimal type. Without a custom encoder, LiveSvelte's fallback serialises a %Decimal{} as %{coef: _, exp: _, sign: _}, which Svelte then stringifies as [object Object]. This impl emits the normalised decimal string (matching the generated TypeScript string type for :decimal fields).
  • Ecto.Association.NotLoaded — when a schema field is never preloaded, the default encoding leaks internal module names (__owner__, __field__) to the browser. This impl replaces the not-loaded sentinel with nil.

The impls live under a Code.ensure_loaded?/1 guard so the file is safe to compile even when LiveSvelte is absent or older than 0.18 (where the LiveSvelte.Encoder protocol first landed).

This module has no runtime API — it exists solely to host the two defimpl blocks below, which Elixir's protocol consolidation picks up automatically.