如何在 R Shiny js 数据表中仅选择单个父行
问题描述 投票：0回答：1
我在这个答案中有第一个代码块（复制如下），我想扩展它，以便用户一次只能选择一个父行。
我追求的有两件事：
- 表格应该在其初始状态下全部展开。这意味着默认情况下所有子表都会展开。然后用户可以根据需要折叠和展开。
- 用户一次只能选择并突出显示一个父行。他们不应该能够突出显示多个父行或任何子行。用户选择的内容应该独立于父行是否展开。
NestedData <- function(dat, children){
stopifnot(length(children) == nrow(dat))
g <- function(d){
if(is.data.frame(d)){
purrr::transpose(d)
}else{
purrr::transpose(NestedData(d[[1]], children = d$children))
}
}
subdats <- lapply(children, g)
oplus <- ifelse(lengths(subdats), "⊕", "")
cbind(" " = oplus, dat, "_details" = I(subdats),
stringsAsFactors = FALSE)
}
df <- data.frame(
COUNTRY = c("USA","Japan","USA","France","Italy","Canada","Japan"),
NAME = c("Mark","Hue","Mary","Jean","Laura","John","Zhan"),
AGE = c(20, 21, 18, 35, 40, 33, 27),
DATE_OF_BIRTH = c("1980-05-01","1978-05-04","1983-11-01","1989-05-15","1985-08-08","1978-02-18","1983-09-27")
)
children <- lapply(split(df, df$COUNTRY), "[", -1)
dat0 <- data.frame(COUNTRY = names(children))
Dat <- NestedData(dat = dat0, children = unname(children))
library(DT)
## whether to show row names
rowNames = FALSE
colIdx <- as.integer(rowNames)
## the callback
parentRows <- which(Dat[,1] != "")
callback <- JS(
sprintf("var parentRows = [%s];", toString(parentRows-1)),
sprintf("var j0 = %d;", colIdx),
"var nrows = table.rows().count();",
"for(let i = 0; i < nrows; ++i){",
" var $cell = table.cell(i,j0).nodes().to$();",
" if(parentRows.indexOf(i) > -1){",
" $cell.css({cursor: 'pointer'});",
" }else{",
" $cell.removeClass('details-control');",
" }",
"}",
"",
"// --- make the table header of the nested table --- //",
"var formatHeader = function(d, childId){",
" if(d !== null){",
" var html = ",
" '<table class=\"display compact hover\" ' + ",
" 'style=\"padding-left: 30px;\" id=\"' + childId + ",
" '\"><thead><tr>';",
" var data = d[d.length-1] || d._details;",
" for(let key in data[0]){",
" html += '<th>' + key + '</th>';",
" }",
" html += '</tr></thead></table>'",
" return html;",
" } else {",
" return '';",
" }",
"};",
"",
"// --- row callback to style rows of child tables --- //",
"var rowCallback = function(row, dat, displayNum, index){",
" if($(row).hasClass('odd')){",
" $(row).css('background-color', 'papayawhip');",
" $(row).hover(function(){",
" $(this).css('background-color', '#E6FF99');",
" }, function(){",
" $(this).css('background-color', 'papayawhip');",
" });",
" } else {",
" $(row).css('background-color', 'lemonchiffon');",
" $(row).hover(function(){",
" $(this).css('background-color', '#DDFF75');",
" }, function(){",
" $(this).css('background-color', 'lemonchiffon');",
" });",
" }",
"};",
"",
"// --- header callback to style header of child tables --- //",
"var headerCallback = function(thead, data, start, end, display){",
" $('th', thead).css({",
" 'border-top': '3px solid indigo',",
" 'color': 'indigo',",
" 'background-color': '#fadadd'",
" });",
"};",
"",
"// --- make the datatable --- //",
"var formatDatatable = function(d, childId){",
" var data = d[d.length-1] || d._details;",
" var colNames = Object.keys(data[0]);",
" var columns = colNames.map(function(x){",
" return {data: x.replace(/\\./g, '\\\\\\.'), title: x};",
" });",
" var id = 'table#' + childId;",
" if(colNames.indexOf('_details') === -1){",
" var subtable = $(id).DataTable({",
" 'data': data,",
" 'columns': columns,",
" 'autoWidth': true,",
" 'deferRender': true,",
" 'info': false,",
" 'lengthChange': false,",
" 'ordering': data.length > 1,",
" 'order': [],",
" 'paging': false,",
" 'scrollX': false,",
" 'scrollY': false,",
" 'searching': false,",
" 'sortClasses': false,",
" 'rowCallback': rowCallback,",
" 'headerCallback': headerCallback,",
" 'columnDefs': [{targets: '_all', className: 'dt-center'}]",
" });",
" } else {",
" var subtable = $(id).DataTable({",
" 'data': data,",
" 'columns': columns,",
" 'autoWidth': true,",
" 'deferRender': true,",
" 'info': false,",
" 'lengthChange': false,",
" 'ordering': data.length > 1,",
" 'order': [],",
" 'paging': false,",
" 'scrollX': false,",
" 'scrollY': false,",
" 'searching': false,",
" 'sortClasses': false,",
" 'rowCallback': rowCallback,",
" 'headerCallback': headerCallback,",
" 'columnDefs': [",
" {targets: -1, visible: false},",
" {targets: 0, orderable: false, className: 'details-control'},",
" {targets: '_all', className: 'dt-center'}",
" ]",
" }).column(0).nodes().to$().css({cursor: 'pointer'});",
" }",
"};",
"",
"// --- display the child table on click --- //",
"// array to store id's of already created child tables",
"var children = [];",
"table.on('click', 'td.details-control', function(){",
" var tbl = $(this).closest('table'),",
" tblId = tbl.attr('id'),",
" td = $(this),",
" row = $(tbl).DataTable().row(td.closest('tr')),",
" rowIdx = row.index();",
" if(row.child.isShown()){",
" row.child.hide();",
" td.html('⊕');",
" } else {",
" var childId = tblId + '-child-' + rowIdx;",
" if(children.indexOf(childId) === -1){",
" // this child has not been created yet",
" children.push(childId);",
" row.child(formatHeader(row.data(), childId)).show();",
" td.html('⊖');",
" formatDatatable(row.data(), childId, rowIdx);",
" }else{",
" // this child has already been created",
" row.child(true);",
" td.html('⊖');",
" }",
" }",
"});")
datatable(
Dat,
callback = callback, rownames = rowNames, escape = -colIdx-1,
options = list(
paging = FALSE,
searching = FALSE,
columnDefs = list(
list(
visible = FALSE,
targets = ncol(Dat)-1+colIdx
),
list(
orderable = FALSE,
className = "details-control",
targets = colIdx
),
list(
className = "dt-center",
targets = "_all"
)
)
)
)
这样我就可以跟踪所选行以使用户能够单击按钮并执行其他操作。
我尝试将
'selection': single,我还尝试在下面所示的表中添加
selection = list(mode = 'single', target = 'row+column')datatable(
Dat,
callback = callback, rownames = rowNames, escape = -colIdx-1,
selection = list(mode = 'single', target = 'row+column'),
options = list(
paging = FALSE,
searching = FALSE,
columnDefs = list(
list(
visible = FALSE,
targets = ncol(Dat)-1+colIdx
),
list(
orderable = FALSE,
className = "details-control",
targets = colIdx
),
list(
className = "dt-center",
targets = "_all"
)
)
)
)
1个回答
0
投票
投票
很好的要求。
NestedData <- function(dat, children){
stopifnot(length(children) == nrow(dat))
g <- function(d){
if(is.data.frame(d)){
purrr::transpose(d)
}else{
purrr::transpose(NestedData(d[[1]], children = d$children))
}
}
subdats <- lapply(children, g)
oplus <- ifelse(lengths(subdats), "⊕", "")
cbind(" " = oplus, dat, "_details" = I(subdats),
stringsAsFactors = FALSE)
}
df <- data.frame(
COUNTRY = c("USA","Japan","USA","France","Italy","Canada","Japan"),
NAME = c("Mark","Hue","Mary","Jean","Laura","John","Zhan"),
AGE = c(20, 21, 18, 35, 40, 33, 27),
DATE_OF_BIRTH = c("1980-05-01","1978-05-04","1983-11-01","1989-05-15","1985-08-08","1978-02-18","1983-09-27")
)
children <- lapply(split(df, df$COUNTRY), "[", -1)
dat0 <- data.frame(COUNTRY = names(children))
Dat <- NestedData(dat = dat0, children = unname(children))
library(DT)
## whether to show row names
rowNames = FALSE
colIdx <- as.integer(rowNames)
## the callback
parentRows <- which(Dat[,1] != "")
callback <- JS(
sprintf("var parentRows = [%s];", toString(parentRows-1)),
sprintf("var j0 = %d;", colIdx),
"var nrows = table.rows().count();",
"for(let i = 0; i < nrows; ++i){",
" var $cell = table.cell(i,j0).nodes().to$();",
" if(parentRows.indexOf(i) > -1){",
" $cell.css({cursor: 'pointer'});",
" }else{",
" $cell.removeClass('details-control');",
" }",
"}",
"",
"// --- make the table header of the nested table --- //",
"var formatHeader = function(d, childId){",
" if(d !== null){",
" var html = ",
" '<table class=\"display compact hover\" ' + ",
" 'style=\"padding-left: 30px;\" id=\"' + childId + ",
" '\"><thead><tr>';",
" var data = d[d.length-1] || d._details;",
" for(let key in data[0]){",
" html += '<th>' + key + '</th>';",
" }",
" html += '</tr></thead></table>'",
" return html;",
" } else {",
" return '';",
" }",
"};",
"",
"// --- row callback to style rows of child tables --- //",
"var rowCallback = function(row, dat, displayNum, index){",
" if($(row).hasClass('odd')){",
" $(row).css('background-color', 'papayawhip');",
" $(row).hover(function(){",
" $(this).css('background-color', '#E6FF99');",
" }, function(){",
" $(this).css('background-color', 'papayawhip');",
" });",
" } else {",
" $(row).css('background-color', 'lemonchiffon');",
" $(row).hover(function(){",
" $(this).css('background-color', '#DDFF75');",
" }, function(){",
" $(this).css('background-color', 'lemonchiffon');",
" });",
" }",
"};",
"",
"// --- header callback to style header of child tables --- //",
"var headerCallback = function(thead, data, start, end, display){",
" $('th', thead).css({",
" 'border-top': '3px solid indigo',",
" 'color': 'indigo',",
" 'background-color': '#fadadd'",
" });",
"};",
"",
"// --- make the datatable --- //",
"var formatDatatable = function(d, childId){",
" var data = d[d.length-1] || d._details;",
" var colNames = Object.keys(data[0]);",
" var columns = colNames.map(function(x){",
" return {data: x.replace(/\\./g, '\\\\\\.'), title: x};",
" });",
" var id = 'table#' + childId;",
" if(colNames.indexOf('_details') === -1){",
" var subtable = $(id).DataTable({",
" 'data': data,",
" 'columns': columns,",
" 'autoWidth': true,",
" 'deferRender': true,",
" 'info': false,",
" 'lengthChange': false,",
" 'ordering': data.length > 1,",
" 'order': [],",
" 'paging': false,",
" 'scrollX': false,",
" 'scrollY': false,",
" 'searching': false,",
" 'sortClasses': false,",
" 'rowCallback': rowCallback,",
" 'headerCallback': headerCallback,",
" 'columnDefs': [{targets: '_all', className: 'dt-center'}]",
" });",
" } else {",
" var subtable = $(id).DataTable({",
" 'data': data,",
" 'columns': columns,",
" 'autoWidth': true,",
" 'deferRender': true,",
" 'info': false,",
" 'lengthChange': false,",
" 'ordering': data.length > 1,",
" 'order': [],",
" 'paging': false,",
" 'scrollX': false,",
" 'scrollY': false,",
" 'searching': false,",
" 'sortClasses': false,",
" 'rowCallback': rowCallback,",
" 'headerCallback': headerCallback,",
" 'columnDefs': [",
" {targets: -1, visible: false},",
" {targets: 0, orderable: false, className: 'details-control'},",
" {targets: '_all', className: 'dt-center'}",
" ]",
" }).column(0).nodes().to$().css({cursor: 'pointer'});",
" }",
"};",
"",
"// --- display the child table on click --- //",
"// array to store id's of already created child tables",
"var children = [];",
"var opened = -1;",
"table.on('click', 'td.details-control', function() {",
" var tbl = $(this).closest('table'),",
" tblId = tbl.attr('id'),",
" td = $(this),",
" row = $(tbl).DataTable().row(td.closest('tr')),",
" rowIdx = row.index();",
" if(opened !== -1 && opened !== rowIdx) {",
" return false;",
" }",
" if(row.child.isShown()) {",
" row.child.hide();",
" opened = - 1;",
" td.html('⊕');",
" } else {",
" opened = rowIdx;",
" var childId = tblId + '-child-' + rowIdx;",
" if(children.indexOf(childId) === -1) {",
" // this child has not been created yet",
" children.push(childId);",
" row.child(formatHeader(row.data(), childId)).show();",
" td.html('⊖');",
" formatDatatable(row.data(), childId, rowIdx);",
" }else{",
" // this child has already been created",
" row.child(true);",
" td.html('⊖');",
" }",
" }",
"});")
datatable(
Dat,
callback = callback, rownames = rowNames, escape = -colIdx-1,
options = list(
paging = FALSE,
searching = FALSE,
columnDefs = list(
list(
visible = FALSE,
targets = ncol(Dat)-1+colIdx
),
list(
orderable = FALSE,
className = "details-control",
targets = colIdx
),
list(
className = "dt-center",
targets = "_all"
)
)
)
)
我不知道为什么子行的标题错位。可能是我使用的浏览器（Edge）的问题。
最新问题
- Spring Security的授权
- 不能在非阻塞模式下使用ASIO SSL套接字吗？
- 在 Helm 中合并两个字典
- 为什么 GitLab CI 作业没有以“规则：更改”运行？
- 如何在 Java 中将双精度数截断为仅保留两位小数？
- 如何将表单请求与mysql表数据（如果存在）进行比较
- Docker mosquitto 地址不可用
- 在 ElasticSearch 中创建每日索引时如何防止速度变慢？
- 如何使用搜索和删除选项删除vim中的块
- 通过SQL查询获取特定数据库的所有表名？
- 使用 pdfjam 将 PDF 转换为不同的页面格式
- 如何在react中不重新加载的情况下以表单显示最新更新的数据
- makeinfo 找不到 Texinfo/ModulePath.pm
- 本地docker拦截，HTTP，不拦截或者CORS
- 如何统一检测精灵的透明部分
- C# 如何证明通过引用传递值类型时方法是否将参数指定为引用不同的对象
- Windows Powershell：仅替换文本文件中以特定表达式开头的行中的表达式
- 如何在 Python 中输入带有默认值的通用可调用对象？
- ld 找不到符号，但 lld 可以，为什么？ （MSYS2 上的 MinGW64 库）
- 我怎样才能让这个下拉菜单占据整个页面宽度？
© www.soinside.com 2019 - 2024. All rights reserved.