fallback-routing.md
In orbital: Predict with 'tidymodels' Workflows in Databases

a decision value routes to a cut at zero, and refuses prob

Code
  orbital(fit, type = "prob")
Condition
  Error in `orbital()`:
  ! "prob" predictions are not available for this model.
  i It produces an uncalibrated decision value rather than a probability.
  i Use `type = "class"` instead.

a class-only model routes its label through, and refuses prob

Code
  orbital(fit, type = "prob")
Condition
  Error in `orbital()`:
  ! "prob" predictions are not available for this model.
  i It predicts a class directly, with no probability behind it.
  i Use `type = "class"` instead.

a model tidypredict cannot describe is refused

Code
  route_fallback(rlang::expr(1 + 1), fit, "classification", "class")
Condition
  Error:
  ! Classification output for a model of class <made_up> is not yet supported.
  i The model itself is supported for "regression" mode.

a level-count mismatch is refused

Code
  order_prob_eqs(c(a = "1", b = "2"), fit, fit$lvl, rlang::current_env())
Condition
  Error:
  ! Model returned 2 expressions for 3 outcome levels.