Lavash.Actions.Run (Lavash v0.3.0-rc.2)

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Executes a function that returns updated assigns.

Server-only (plain function)

The function receives assigns (state + params merged) and should use assign/3 to update fields:

run fn assigns ->
  assigns
  |> assign(:status, :processing)
  |> assign(:submitted_at, DateTime.utc_now())
end

Transpilable (with reads)

Add reads to declare state dependencies, enabling JavaScript transpilation:

run [:subtotal, :discount_rate], fn assigns ->
  discount = assigns.subtotal * assigns.discount_rate
  final = assigns.subtotal - discount

  assigns
  |> assign(:discount_amount, discount)
  |> assign(:total, final)
end

Fields

  • :fun - The function AST (quoted), compiled at runtime for server-side execution