##' Get a list of officials according to the district they are running for
##'
##' This function is a wrapper for the Officials.getByDistrict() method of the PVS API Officials class which grabs a list of officials according to the district they are running for. The function sends a request with this method to the PVS API for all district IDs given as a function input, extracts the XML values from the returned XML file(s) and returns them arranged in one data frame.
##' @usage Officials.getByDistrict(districtId)
##' @param districtId a character string or list of character strings with the district ID(s) (see references for details)
##' @return A data frame with a row for each official and columns with the following variables describing the official:\cr candidateList.candidate*.candidateId,\cr candidateList.candidate*.firstName,\cr candidateList.candidate*.nickName,\cr candidateList.candidate*.middleName,\cr candidateList.candidate*.lastName,\cr candidateList.candidate*.suffix,\cr candidateList.candidate*.title,\cr candidateList.candidate*.electionParties,\cr candidateList.candidate*.electionstatus,\cr candidateList.candidate*.officeParties,\cr candidatelist.candidate*.officeStatus,\cr candidateList.candidate*.officeDistrictId,\cr candidateList.candidate*.officeDistrictName,\cr candidateList.candidate*.officeTypeId,\cr candidateList.candidate*.officeId,\cr candidateList.candidate*.officeName,\cr candidateList.candidate*.officeStateId.
##' @references http://api.votesmart.org/docs/Officials.html\cr
##' Use District.getByOfficeState() or District.getByZip() to get a list of district ID(s).\cr
##' See also: Matter U, Stutzer A (2015) pvsR: An Open Source Interface to Big Data on the American Political Sphere. PLoS ONE 10(7): e0130501. doi: 10.1371/journal.pone.0130501
##' @author Ulrich Matter <ulrich.matter-at-unibas.ch>
##' @examples
##' # First, make sure your personal PVS API key is saved as an option
##' # (options("pvs.key" = "yourkey")) or in the pvs.key variable:
##' \dontrun{pvs.key <- "yourkey"}
##' # get officials by dristrict ID
##' \dontrun{officials <- Officials.getByDistrict(as.list(25157:25163))}
##' \dontrun{officials}
##' @export
Officials.getByDistrict <-
function (districtId) {
# internal function
Officials.getByDistrict.basic <- function (.districtId) {
request <- "Officials.getByDistrict?"
inputs <- paste("&districtId=",.districtId,sep="")
output <- pvsRequest4(request,inputs)
output
}
# Main function
output.list <- lapply(districtId, FUN= function (y) {
Officials.getByDistrict.basic(.districtId=y)
}
)
output.list <- redlist(output.list)
output <- bind_rows(output.list)
return(output)
}
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