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Define show conditions for survey questions and pages

Source: R/server.R
sd_show_if.Rd

This function is used to define conditions under which certain questions or pages 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 or page ID. If called with no arguments, it will return NULL and set no conditions.

Usage

sd_show_if(...)

Arguments

...

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 or page to show if the condition is met.

Value

A list of parsed conditions, where each element contains the condition and the target question or page ID. Returns NULL if no conditions are provided.

See also

sd_skip_if()

Examples

if (interactive()) {
  library(surveydown)

  # Use sd_show_if() to conditionally show/hide questions:
  # server <- function(input, output, session) {
  #   sd_show_if(
  #     input$has_car == "yes" ~ "car_make",
  #     input$employed == "yes" ~ "job_title",
  #     input$age >= 18 ~ "adult_questions_page"
  #   )
  #   sd_server()
  # }

  # Find a working directory and start from a template:
  sd_create_survey(template = "conditional_showing")
  # This creates survey.qmd and app.R - launch the survey using app.R
}