Validate that a column-based sort references an existing column

Fails fast with an informative error when sort_by names a column (from the allowed whitelist) that is not present in data. Only performs validation for scalar sort_by; non-scalar values (e.g. category vectors) are skipped since they are validated by validate_sort_category() instead.

Usage

validate_sort_column(
  sort_by,
  data,
  allowed = .saros.env$allowed_dep_sort_columns,
  call = rlang::caller_env()
)

Arguments

sort_by

Character scalar, or NULL. The column name to sort by. Non-scalar values are silently accepted (no column validation).

data

Data frame to check.

allowed

Character vector of whitelisted column names.

call

Calling environment for error reporting.

Value

TRUE invisibly if valid.