在使用bslib和Bootstrap样式的数据表格中移除单元格边框。

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英文:

Remove cell border in datatable with bslib and Bootstrap styling

问题

在一个Shiny应用中,我正在使用bslib库应用Yeti主题,并使用Bootstrap样式的数据表格。与使用其他Bootstrap样式(例如Bootstrap 5)或使用shinythemes库而不是bslib时不同,数据表格中出现了不希望的白色单元格边框,我无法去掉。

我尝试过进行CSS覆盖,但似乎没有起作用:

library(shiny)
library(DT)
library(bslib)

ui <- navbarPage("一个可复现的Shiny应用",
  theme = bs_theme(bootswatch = "yeti"),
  tabPanel("主页",
    tags$style('#mytable td {border: none;}'),
    mainPanel(DT::dataTableOutput('mytable'))
  )
)    

server <- function(input, output,session) {
  output$mytable = DT::renderDataTable(    
    datatable(mtcars[1:3], style="bootstrap")
  ) 
}

runApp(list(ui = ui, server = server))

[![带有恼人白色单元格边框的数据表格][1]][1]


这里是你要的翻译结果,不包括代码部分。

<details>
<summary>英文:</summary>

In a shiny app, I am applying the yeti theme using the bslib library and a datatable with bootstrap styling. Unlike as if using other bootstrap stylings (e.g. bootstrap5) or the shinythemes library instead of bslib, there are unwanted white cell borders in the datatable, which I don&#39;t manage to get rid of.

I tried to do a CSS override which did not seem to work:

library(shiny)
library(DT)
library(bslib)

ui <- navbarPage("A reproducible Shiny app",
theme = bs_theme(bootswatch = "yeti"),
tabPanel("MAIN",
tags$style('#mytable td {cell-border:0}'),
mainPanel(DT::dataTableOutput('mytable'))
)
)

server <- function(input, output,session) {
output$mytable = DT::renderDataTable(
datatable(mtcars[1:3], style="bootstrap")
)
}

runApp(list(ui = ui, server = server))

[![Datatable with annoying white cell borders][1]][1]


  [1]: https://i.stack.imgur.com/PHSIZ.png

</details>


# 答案1
**得分**: 1

你可以实际上自定义 `bs_theme()` 调用,使用 `bs_add_rules()` 并在其中传递一些 CSS 代码。

编辑:参见[此 GitHub 问题](https://github.com/rstudio/bslib/issues/360)和[bslib 文档](https://cran.r-project.org/web/packages/bslib/index.html)。

通过使用浏览器上的检查功能以及纯经验法,我发现 CSS 属性 `border-collapse` 是您正在寻找的属性,并且它与 `table.dataTable{}` 选择器相关联。描述 CSS 的工作原理超出了这个问题的范围,我不是专家,所以请随意在这个主题上进行了解。您还可以确实使用此表的特定选择器(所有其他数据表仍然具有白色边框):`#mytable dt : {border-collapse: collapse !important;}`。

这是没有白色边框的您的应用程序:

```R
library(shiny)
library(DT)
library(bslib)

ui <- navbarPage("一个可重现的 Shiny 应用程序",
                 theme = bs_theme(bootswatch = "yeti") |
                   # 添加 CSS 规则以覆盖 yeti 的 'separate' border-collapse 默认选项:
                   bs_add_rules(".table.dataTable { border-collapse : collapse !important;}"),
                 tabPanel("主要",
                          mainPanel(DT::dataTableOutput('mytable'))
                 )
)

server <- function(input, output,session) {
  output$mytable = DT::renderDataTable(    
    datatable(mtcars[1:3], style="bootstrap")
  ) 
}

runApp(list(ui = ui, server = server))

希望这有所帮助。

英文:

You can actually custom the bs_theme() call using bs_add_rules() and passing some CSS code in it.

EDIT: see this github issue and bslib documentation.

By using the Inspect feature on my browser and with pure empirical approach, I found out that the CSS attribute border-collapse was the one you were looking for, and that it is associated with the table.dataTable{} selector. Describing how CSS works is beyond the scope of this question and I'm not an expert, so feel free to document yourself on this topic. You can also indeed use the specific selector for this table (all other datatables would still have the white border) with #mytable dt : {border-collapse: collapse !important;}

Here's your app without the white border :

library(shiny)
library(DT)
library(bslib)

ui &lt;- navbarPage(&quot;A reproducible Shiny app&quot;,
                         theme = bs_theme(bootswatch = &quot;yeti&quot;) |&gt;
# add css rule to override yeti&#39;s &#39;separate&#39; border-collapse default option :  
                   bs_add_rules(&quot;.table.dataTable { border-collapse : collapse !important;}&quot;),
                         tabPanel(&quot;MAIN&quot;,

                                  # not needed anymore : tags$style(&#39;#mytable td {cell-border:0}&#39;),
                                  mainPanel(DT::dataTableOutput(&#39;mytable&#39;))
                         )
)

server &lt;- function(input, output,session) {
  output$mytable = DT::renderDataTable(    
    datatable(mtcars[1:3], style=&quot;bootstrap&quot;)
  ) 
}

runApp(list(ui = ui, server = server))

Hope this helps.

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  • 本文由 发表于 2023年6月22日 17:44:03
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