R闪亮DT奇怪的渲染问题

时间:2015-07-28 17:38:13

标签: r shiny dt

我的一个使用DT的应用程序遇到了一个奇怪的问题。我正在尝试使用renderDataTable呈现一个表,所有列名都有鼠标悬停在文本上。这是代码:

server.R

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myApp" id="app">
  <my-directive-name my-attribute="foo"></my-directive-name>
</div>

ui.R

.libPaths("/usr/lib64/R/library")
 library(shiny)      # 0.12.1
 library(data.table) # 1.9.4 
 library(DT)         # 0.1
 options(DT.options = list(pageLength = 5,lengthMenu = c(5,10, 25, 100),orderClasses=TRUE))
 rb <-  fread("r1.csv")
 ## r1.csv has the following data(subset) :
 # "c1","c2","c3","c4"
 # "10011","7","999999","3"
 # "10597","6","114182","1"
 # "20101","7","999999","3"
 # "20102","7","999999","3"
 non_factor_columns<-names(rb)[!names(rb) %in% c("c1","c3")]
 rb[,(non_factor_columns):=lapply(.SD, as.factor),.SDcols=non_factor_columns]
 cols<-c("c1","c2","c3","c4")
 labels<-c("This is column  1","This is column  2","This is column  3","This is column  4")
 rbcollabels<-data.table(cols,labels)
 setkey(rbcollabels,cols)
 prefcols<-c("c1","c3")
 setcolorder(rb,union(prefcols,colnames(rb)[!colnames(rb) %in% prefcols]))
 r<-as.data.table(colnames(rb))
 gotlabels<-rbcollabels[r]
 collabelstr<- paste0("thead(tr(",paste0("th('",gotlabels$cols,"'",",title=","'",gotlabels$labels,"')",collapse=","),"))")

shinyServer(function(input, output) {
   sketch = htmltools::withTags(table(
   class = 'display',eval(parse(text=collabelstr))
  )
)
output$table1 <- renderDataTable({ 
  datatable(rb, options=list(dom='C<"clear">Rlrtip',colVis = list(activate =  'mouseover', restore = 'Restore', showAll= 'Show all', showNone= "Show none" )),
        rownames=F,container=sketch,filter='top',extensions =  c('ColVis','ColReorder')
 )
})
})

在新的R studio会话中,代码不会在第一次尝试时呈现表,但会在第二次尝试时呈现它,而不对代码进行任何修改。从发布的位置开始,尽管多次尝试,该表仍然不会呈现。我无法弄清楚为什么 - 任何帮助?

2 个答案:

答案 0 :(得分:2)

我认为ui.R中缺少library(DT),并且在我library(shiny)之后添加它之后它运行正常。它在第二次尝试Rstudio中工作的原因是因为那时DT已从server.R加载但由于ui.R中缺少此语句而未在第一次尝试中}, 我猜。

答案 1 :(得分:1)

尝试使用DT::renderDataTable()DT::dataTableOutput()版本。

我认为闪亮的版本已被弃用......

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