如何避免数据表中行回调和排序之间的混淆 [英] How to avoid mixup between rowcallback and sorting in datatable
问题描述
借助先前的
,然后排序:(带有叉号
库(发光)
库(DT)
mtcars<-as.data.table(mtcars [1:15,)
ui<-fluidPage(
#actionButton('SubmitRemoval','排除选定的行'),
#actionButton('UndoRemoval','包括完整数据'),
#br(),
DTOutput('metadataTable')
)
服务器<-函数(输入,输出,会话){
值<-reactValues()
rowCallbackMeta =函数(行){
c(
function(row,data,num,index){,
sprintf( var rows = [%s];,paste0(rows-1,塌陷=,)),
if(rows.indexOf(num)> -1){,
for(var i = 0; i< data.length; i ++){,
$('td:eq('+ i +')',row) ,
.css({'color':'rgb(211,211,211)','font-style':'italic'});,
},
} ,
$('td:eq(3)',行).html(data [3] .toExponential(2));,
}
)
}
output $ metadataTable<-DT :: renderDataTable({
行<-values $ RowsRemove
#mtcars1<-cbind(Selected ='< span style = color:#31C769; font-size:18px>< i class = fa fa-check< / i>< / span>',mtcars)
mtcars1<-cbind(Selected ='< span style = color:red; font-size:18px< i class = glyphicon glyphicon-ok< / i> // span>',mtcars)
print(rows)
#if(!is.null(rows)){
mtcars1 $ Selected [rows]<-'< span style = color:red; font-size:18px>< i class = glyphicon glyphicon-remove< / i< / s pan>'
#}
Table_opts<-list(
dom ='frtipB',
search = F,
pageLength = 50,
searchHighlight = TRUE,
colReorder = TRUE,
fixedHeader = TRUE,
按钮= list('copy','csv',
list(
扩展=集合,
文本='取消选择',
操作= DT :: JS(函数(e,dt,node,config){
Shiny.setInputValue('SubmitRemoval', true,{priority:'event'});
})
),
list(
extend = collection,
text ='Restore',
action = DT :: JS( 函数(e,dt,node,config){
Shiny.setInputValue('UndoRemoval',true,{priority:'event'});
})
)
),
分页= TRUE,
deferRender = TRUE,
columnDefs = list(list(class(className ='dt-right',targets ='_all'))),
rowCallback = JS(rowCallbackMeta(rows)),
scrollX = T,
scrollY = 440
)
DT :: datatable(mtcars1,
escape = FALSE,
扩展名= c('Buttons','ColReorder','FixedHeader','Scroller'),
选择= c('multiple'),
行名= FALSE
,
选项= Table_opts
)
})
watchEvent(values $ RowsRemove,{
print (看到行删除)
values $ Datafiles_meta_Selected<-values $ Datafiles_meta_Selected [-c(values $ RowsRemove),]
})
watchEvent(input [[' SubmitRemoval']],{
if(is.null(values $ RowsRemove)){values $ RowsRemove<-as.numeric()}
values $ RowsRemove<-unique(c(values $ RowsRemove,输入[[ metadataTable_rows_selected]]))
})
watchEvent(input [[ UndoRemoval]],{
values $ RowsRemove<-NULL
values $ Datafiles_meta_Selected<-values $ Datafiles_meta
}}
}
ShinyApp(ui,server)
您正在使用的 num
javascript选择要变灰的行是基于当前显示的行号
您可以尝试替换中的
函数通过: if
语句rowCallbackMeta
if(data [0] .search('remove')> -1)
这会在数据的第一列中查找删除以排除行,并且之所以起作用,是因为排除行时,第一列中的glyphicon已更新为< i class = glyphicon glyphicon-remove< / i>
。
With the help of a previous question, I can now style selected rows (intended for the user to select rows to be excluded from further analysis), but I have found out that sorting the datatable after executing the functionality to exclude rows (gray them out and add a different icon, keeps the icon in the correct row, but grays out the wrong rows.
here is the table after deselecting rows 2,3 and 4 before sorting:
and after sort: (with the crosses at the right rows, but the graying out not.
library(shiny)
library(DT)
mtcars <- as.data.table(mtcars[1:15, )
ui <- fluidPage(
# actionButton('SubmitRemoval', 'Exclude selected rows'),
# actionButton('UndoRemoval', 'Include full data'),
# br(),
DTOutput('metadataTable')
)
server <- function(input, output,session) {
values <- reactiveValues()
rowCallbackMeta = function(rows){
c(
"function(row, data, num, index){",
sprintf(" var rows = [%s];", paste0(rows-1, collapse = ",")),
" if(rows.indexOf(num) > -1){",
" for(var i=0; i<data.length; i++){",
" $('td:eq('+i+')', row)",
" .css({'color': 'rgb(211,211,211)', 'font-style': 'italic'});",
" }",
" }",
" $('td:eq(3)', row).html(data[3].toExponential(2));",
"}"
)
}
output$metadataTable <- DT::renderDataTable({
rows <- values$RowsRemove
# mtcars1 <- cbind(Selected ='<span style = "color:#31C769 ; font-size:18px"><i class="fa fa-check"></i></span>', mtcars)
mtcars1 <- cbind(Selected ='<span style = "color:red ; font-size:18px"><i class="glyphicon glyphicon-ok"></i></span>', mtcars)
print(rows)
# if(!is.null(rows)) {
mtcars1$Selected[rows] <- '<span style = "color:red ; font-size:18px"><i class="glyphicon glyphicon-remove"></i></span>'
# }
Table_opts <- list(
dom = 'frtipB',
searching = F,
pageLength = 50,
searchHighlight = TRUE,
colReorder = TRUE,
fixedHeader = TRUE,
buttons = list('copy', 'csv',
list(
extend = "collection",
text = 'Deselect',
action = DT::JS("function ( e, dt, node, config ) {
Shiny.setInputValue('SubmitRemoval', true, {priority: 'event'});
}")
),
list(
extend = "collection",
text = 'Restore',
action = DT::JS("function ( e, dt, node, config ) {
Shiny.setInputValue('UndoRemoval', true, {priority: 'event'});
}")
)
),
paging = TRUE,
deferRender = TRUE,
columnDefs = list(list(className = 'dt-right', targets = '_all')),
rowCallback = JS(rowCallbackMeta(rows)),
scrollX = T,
scrollY = 440
)
DT::datatable(mtcars1,
escape = FALSE,
extensions = c('Buttons', 'ColReorder', 'FixedHeader', 'Scroller'),
selection = c('multiple'),
rownames = FALSE
,
options = Table_opts
)
})
observeEvent(values$RowsRemove, {
print('seeing rows remove')
values$Datafiles_meta_Selected <- values$Datafiles_meta_Selected[-c(values$RowsRemove),]
})
observeEvent(input[['SubmitRemoval']], {
if(is.null(values$RowsRemove)) { values$RowsRemove <- as.numeric()}
values$RowsRemove <- unique(c(values$RowsRemove, input[["metadataTable_rows_selected"]]))
})
observeEvent(input[["UndoRemoval"]], {
values$RowsRemove <- NULL
values$Datafiles_meta_Selected <- values$Datafiles_meta
})
}
shinyApp(ui, server)
The num
you are using in your javascript to select rows to gray out is based on the row number on the current display so not impacted by sorting.
You could try replacing your if
statement in your rowCallbackMeta
function by:
if(data[0].search('remove') > -1)
This looks for "remove" in the first column of the data to exclude rows, and works because your glyphicon in the first column is updated to <i class="glyphicon glyphicon-remove"></i>
when you exclude rows.
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