check_decorators: Check decorators list
In teal: Exploratory Web Apps for Analyzing Clinical Trials Data

check_decorators

R Documentation

Check decorators list

Description

Check if a decorators list is valid and matches the expected output names.

Usage

check_decorators(x, names = NULL)

assert_decorators(x, names = NULL, .var.name = checkmate::vname(x), add = NULL)

Arguments

`x`	(named `list`) of `teal_transform_module()` objects, or nested lists thereof.
`names`	(`character`) optional vector of valid output names. When provided, all names in `x` must be one of these names, and names must be unique.
`.var.name`	[`character(1)`] The custom name for `x` as passed to any `assert*` function. Defaults to a heuristic name lookup.
`add`	If an `AssertCollection` is provided, the error message is stored in it. If `NULL`, an exception is raised if res is not `TRUE`.

Value

TRUE if valid, otherwise a character(1) string describing the problem.

Examples

decorator <- teal_transform_module(server = function(id, data) data)
check_decorators(decorator)
check_decorators(list(all = decorator))
check_decorators(list(all = decorator, output = decorator))
check_decorators(list(all = decorator, output = list(decorator, decorator)))

teal documentation built on June 30, 2026, 5:11 p.m.