validate_data() checks whether the provided dataset has at least one row.
If the data is empty, it triggers a validation error with a specified message.
Usage
validate_data(data, message = "No data to display")
Arguments
- data
A data frame to validate
- message
A character string specifying the message to display when
the data is empty. Defaults to "No data to display".
Value
This function does not return a value. It triggers a validation
error in a Shiny app if the dataset is empty, preventing further execution.