我想使用observeEvent更新闪亮模块内部的materialSwitch,触发事件,但updateMaterialSwitch不会更改输入值。我的代码段:
# app server
app_server <- function(input, output, session) {
r <- reactiveValues()
observe(r$is_load <- is_load()) # basic reactive true/false - switching according to condition
callModule(mod_1_server, "1", r = r)
}
# mod_1_server
mod_1_server <- function(input, output, session, r) {
output$switch_uncumulate_tagvals <- renderUI({
materialSwitch(
inputId = "uncumulate_tagvals",
label = "label",
value = FALSE,
status = "warning"
)
})
observeEvent(req(r$is_load() == TRUE), {
updateMaterialSwitch(session = session,
inputId = "uncumulate_tagvals",
value = TRUE)
})
observeEvent(req(r$is_load() == FALSE), {
updateMaterialSwitch(session = session,
inputId = "uncumulate_tagvals",
value = FALSE)
})
}
当watchEvents在app_server中时,一切正常。当我将它们移至mod_1_server时,将触发事件,但input $ uncumulate_tagvals(我的inputId)的期望值从未更改。我的猜测是会话可能存在问题,但我不知道该如何解决。有什么建议吗?
答案 0 :(得分:1)
我认为问题出在使用session$ns()
# mod_1_server
mod_1_server <- function(input, output, session, r) {
# namespace fonction
ns <- session$ns
output$switch_uncumulate_tagvals <- renderUI({
materialSwitch(
inputId = ns("uncumulate_tagvals"),
label = "label",
value = FALSE,
status = "warning"
)
})
observeEvent(req(r$is_load() == TRUE), {
updateMaterialSwitch(session = session,
inputId = "uncumulate_tagvals",
value = TRUE)
})
observeEvent(req(r$is_load() == FALSE), {
updateMaterialSwitch(session = session,
inputId = "uncumulate_tagvals",
value = FALSE)
})
}
如果您需要有关如何转换为模块的更多信息,可以阅读以下博客文章:https://rtask.thinkr.fr/communication-between-modules-and-its-whims/