StatifierUI.EventInjection.Entry (StatifierUI v0.1.0)

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One fixture event, rendered as a palette button: an event name, its sample payload verbatim, and the ADR-0005 JSON text a form prefills the payload field with.

The :undefined asymmetry

payload is the fixture value exactly as StatifierUI.Fixtures.event/2 returned it - a predicator value, possibly the :undefined sentinel that means "no data". payload_text is that value's canonical ADR-0005 JSON, with one deliberate exception: a payload of :undefined produces payload_text: "" rather than ~s({"$undefined":true}).

The reason is the round trip. StatifierUI.EventInjection.Draft.build/2 reads a blank payload field as "no data" - the same spelling Statifier.Event.external/2 itself defaults to. Emitting the tagged JSON text for :undefined would prefill a form field with text that, if sent back unedited, still means "no data" but no longer looks blank to a person editing it; emitting the blank string instead makes the palette's round trip through the form the identity on the common case. Every other value, nil included, gets its ordinary JSON text ("null" for nil, "{}" for an empty map). This is the one place in the pane where the encoding and the form affordance diverge, and it diverges on purpose.

Summary

Types

t()

Types

t()

@type t() :: %StatifierUI.EventInjection.Entry{
  name: String.t(),
  payload: term(),
  payload_text: String.t()
}