sd_show_if {surveydown} | R Documentation |
This function is used to define conditions under which certain questions in the survey should be shown.
It takes one or more formulas where the left-hand side is the condition and the right-hand side is the target question ID.
If called with no arguments, it will return NULL
and set no conditions.
sd_show_if(...)
... |
One or more formulas defining show conditions. The left-hand side of each formula should be a condition based on input values, and the right-hand side should be the ID of the question to show if the condition is met. |
A list of parsed conditions, where each element contains the condition and the target question ID.
Returns NULL
if no conditions are provided.
sd_skip_if()
if (interactive()) {
library(surveydown)
# Get path to example survey file
survey_path <- system.file("examples", "sd_show_if.qmd",
package = "surveydown")
# Copy to a temporary directory
temp_dir <- tempdir()
file.copy(survey_path, file.path(temp_dir, "survey.qmd"))
orig_dir <- getwd()
setwd(temp_dir)
# Define a minimal server
server <- function(input, output, session) {
sd_show_if(
# If "Other" is chosen, show the conditional question
input$fav_fruit == "other" ~ "fav_fruit_other"
)
sd_server()
}
# Run the app
shiny::shinyApp(ui = sd_ui(), server = server)
# Clean up
setwd(orig_dir)
}