parseQueryString.Rd

% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/utils.R
\name{parseQueryString}
\alias{parseQueryString}
\title{Parse a GET query string from a URL}
\usage{
parseQueryString(str, nested = FALSE)
}
\arguments{
\item{str}{The query string. It can have a leading \code{"?"} or not.}

\item{nested}{Whether to parse the query string of as a nested list when it
contains pairs of square brackets \code{[]}. For example, the query
\samp{a[i1][j1]=x&b[i1][j1]=y&b[i2][j1]=z} will be parsed as \code{list(a =
list(i1 = list(j1 = 'x')), b = list(i1 = list(j1 = 'y'), i2 = list(j1 =
'z')))} when \code{nested = TRUE}, and \code{list(`a[i1][j1]` = 'x',
`b[i1][j1]` = 'y', `b[i2][j1]` = 'z')} when \code{nested = FALSE}.}
}
\description{
Returns a named list of key-value pairs.
}
\examples{
parseQueryString("?foo=1&bar=b\%20a\%20r")

\dontrun{
# Example of usage within a Shiny app
function(input, output, session) {

  output$queryText <- renderText({
    query <- parseQueryString(session$clientData$url_search)

    # Ways of accessing the values
    if (as.numeric(query$foo) == 1) {
      # Do something
    }
    if (query[["bar"]] == "targetstring") {
      # Do something else
    }

    # Return a string with key-value pairs
    paste(names(query), query, sep = "=", collapse=", ")
  })
}
}

}