我正在构建一个闪亮的 Jmeter 板，我希望用户可用的选择能够反映出用户已经做出的选择。
第一选择器：选项A或选项B
第二选择器：
if Option A: Choice A, Choice B, Choice C
if Option B: Choice D, Choice E, Choice F等等。
我想知道是否有比我做的更简单、更简洁的方法（即嵌套的if else调用）。
我是这样做的（这段代码并不真正依赖于任何数据--您应该能够将其插入控制台并运行它--减去路径的东西）。
library(shiny)
library(shinydashboard)
library(tidyverse)
################################################################################
## Global variables
start_year <- 2016
end_year <- 2021
afh <- NULL
alrc <- NULL
################################################################################
## Define UI
ui <- dashboardPage(
## General formatting
skin = "black",
## Title
## Header
dashboardHeader(),
## Sidebar and inputs
dashboardSidebar(
## formatting
tags$style(type = "text/css", ".irs-grid-pol.small {height: 0px;}"),
## pane title
selectInput("dataset", "Dataset",
c("-",
"Adult Foster Home Resident and Community Characteristics",
"Assisted Living/Residential Care Community Characteristics")
),
selectInput("category", "Category", "*Please select a dataset*"),
selectInput("statistic", "Statistic", "*Please select a category*"),
selectInput("stratification", "Stratification", c("None", "Region", "County")),
sliderInput(
inputId = "year",
label = "Year Range",
value = c(start_year, end_year),
min = start_year,
max = end_year,
step = 1,
sep = ""
)
),
## Body and outputs
dashboardBody()
)
################################################################################
## Define Server components
server <- function(input, output, session) {
## Set the dynamic options for the Category dropdown selector
observeEvent(input$dataset, {
if (input$dataset == "-") {
freezeReactiveValue(input, "category")
updateSelectInput(inputId = "category",
choices = c("*Please select a dataset*"))
} else
if (input$dataset == "Adult Foster Home Resident and Community Characteristics") {
freezeReactiveValue(input, "category")
updateSelectInput(
inputId = "category",
choices = c(
"*Please select a category*",
"Homes",
"Owners",
"Staff",
"Finances",
"Residents",
"COVID-19"
)
)
} else
if (input$dataset == "Assisted Living/Residential Care Community Characteristics") {
freezeReactiveValue(input, "category")
updateSelectInput(
inputId = "category",
choices = c(
"*Please select a category*",
"Community",
"Staff",
"Residents",
"COVID-19"
)
)
}
})
## Set the dynamic options for the Statistic dropdown selector
observeEvent(input$category, {
if (input$category == "*Please select a dataset*") {
freezeReactiveValue(input, "statistic")
updateSelectInput(inputId = "statistic",
choices = c("*Please select a category*"))
} else
if (input$dataset == "Adult Foster Home Resident and Community Characteristics" &
input$category == "Homes") {
freezeReactiveValue(input, "statistic")
updateSelectInput(
inputId = "statistic",
choices = c(
"*Please select a statistic*",
"AFH: Number",
"AFH: Licensed Capacity",
"AFH: Years of Operation"
)
)
} else
if (input$dataset == "Adult Foster Home Resident and Community Characteristics" &
input$category == "Owners") {
freezeReactiveValue(input, "statistic")
updateSelectInput(
inputId = "statistic",
choices = c(
"*Please select a statistic*",
"AFH: Future Plans"
)
)
} else
if (input$dataset == "Adult Foster Home Resident and Community Characteristics" &
input$category == "Staff") {
freezeReactiveValue(input, "statistic")
updateSelectInput(
inputId = "statistic",
choices = c(
"*Please select a statistic*",
"AFH: Tenure",
"AFH: Absenteeism",
"AFH: Contract Staff"
)
)
} else
if (input$dataset == "Adult Foster Home Resident and Community Characteristics" &
input$category == "Finances") {
freezeReactiveValue(input, "statistic")
updateSelectInput(
inputId = "statistic",
choices = c(
"*Please select a statistic*",
"AFH: Medicaid Acceptance and Use",
"AFH: Medicaid Reimbursement Rates",
"AFH: Private Pay Rates by Region",
"AFH: Additional Private-Pay Services and Charges"
)
)
} else
if (input$dataset == "Adult Foster Home Resident and Community Characteristics" &
input$category == "Residents") {
freezeReactiveValue(input, "statistic")
updateSelectInput(
inputId = "statistic",
choices = c(
"*Please select a statistic*",
"AFH: Demographics",
"AFH: Move-In and Move-Out Locations",
"AFH: Length of Stay",
"AFH: Personal Care Services",
"AFH: Assistance from Two Staff and Nighttime Care",
"AFH: Visits and Assistance from Family Members and Friends",
"AFH: Resident Health Conditions and Falls",
"AFH: Health Service and Medication Use"
)
)
} else
if (input$dataset == "Adult Foster Home Resident and Community Characteristics" & input$category == "COVID-19") {
freezeReactiveValue(input, "statistic")
updateSelectInput(
inputId = "statistic",
choices = c(
"*Please select a statistic*",
"AFH: Supports & Challenges"
)
)
} else
if (input$dataset == "Assisted Living/Residential Care Community Characteristics" & input$category == "Community") {
freezeReactiveValue(input, "statistic")
updateSelectInput(
inputId = "statistic",
choices = c(
"*Please select a statistic*",
"ALRC: AL/RC/MC Supply Across Oregon",
"ALRC: Ownership, Chain Affiliation, and Multi-License Settings",
"ALRC: Occupancy Rates",
"ALRC: Units and Room Sharing",
"ALRC: Medicaid Acceptance, Medicaid Reimbursement, and Payer Sources",
"ALRC: Private Pay Charges",
"ALRC: Estimated Industry Charges",
"ALRC: Use of Electronic Health Records",
"ALRC: Additional Services"
)
)
} else
if (input$dataset == "Assisted Living/Residential Care Community Characteristics" & input$category == "Staff") {
freezeReactiveValue(input, "statistic")
updateSelectInput(
inputId = "statistic",
choices = c(
"*Please select a statistic*",
"ALRC: Care-Related Staff Employed Full-Time and Part-Time",
"ALRC: Staff to Resident Ratios",
"ALRC: Staffing Levels",
"ALRC: Current Job Openings",
"ALRC: Unplanned Staff Absences and Outside Service Provider Use",
"ALRC: Recent Turnover and Current Staff Tenure"
)
)
} else
if (input$dataset == "Assisted Living/Residential Care Community Characteristics" & input$category == "Residents") {
freezeReactiveValue(input, "statistic")
updateSelectInput(
inputId = "statistic",
choices = c(
"*Please select a statistic*",
"ALRC: Demographics",
"ALRC: Move-In, Move-Out, and Length of Stay",
"ALRC: Length of Stay Among Residents Who Moved",
"ALRC: Hospice Use Among Residents Who Died",
"ALRC: Assistance with Personal Care",
"ALRC: Health Conditions",
"ALRC: Significant Change in Condition",
"ALRC: Falls & Fall-Related Injuries",
"ALRC: Health Service Use",
"ALRC: Medication Use"
)
)
} else
if (input$dataset == "Assisted Living/Residential Care Community Characteristics" & input$category == "COVID-19") {
freezeReactiveValue(input, "statistic")
updateSelectInput(
inputId = "statistic",
choices = c(
"*Please select a statistic*",
"ALRC: Administrator Experiences"
)
)
}
})
################################################################################
## Run Application
shinyApp(ui, server)
1条答案
按热度按时间xdnvmnnf1#
尝试使用conditionalPanel。我如下简化了您的代码。基本上，我的建议是以创建更多SelectInput为代价，用条件面板的简单性来交换代码的复杂性。
请注意类别如何根据数据集而变化。还请注意，当选择数据集B和类别T时，会出现统计和分层。您应该注意到有三个不同的SelectInput（"categoryx"，...）。最后，请注意需要解决一些副作用。如果需要更多帮助，请联系我们。
存储库（shiny）存储库（shinydashboard）
ui〈- Jmeter 板页面（
Jmeter 板标题（），
Jmeter 板边栏（
），
Jmeter 板正文（））
服务器〈-函数（输入、输出、会话）{}
shinyApp（用户界面，服务器）