首页 \ 问答 \ 在Shiny中selectInput的问题(Problems with selectInput in Shiny)

在Shiny中selectInput的问题(Problems with selectInput in Shiny)

 我试图在selectInput中显示文件所具有的变量的名称。 这个想法是，用户上传应用程序中的文件，他可以选择selectInput中的任何变量。 我试图做到这一点，但我没有意识到我的错误。 我找到了答案，但它没有帮助我。 用闪亮的R中的selectInput选择记录日期  
 这是Ui.R代码：我没有在我的selectInput中获取名称。  
library(shiny)
ui<-fluidPage(
  titlePanel(title = "Prueba"),
  sidebarLayout(
    sidebarPanel(
      fileInput('file1', 'Cargar archivo',
                accept = c(
                  'text/csv',
                  'text/comma-separated-values',
                  'text/tab-separated-values',
                  'text/plain',
                  '.csv',
                  '.tsv'
                )
      ),
      checkboxInput('header', '¿Contiene Encabezado?', TRUE),
      radioButtons('sep', 'Delimitador',
                   c(Comma=',',
                     "Punto y coma"=';',
                     Tab='\t'),
                   ','),
      radioButtons('quote', 'Quote',
                   c(Ninguna='',
                     'Dobles'='"',
                     'Simples'="'"),
                   '"'),
      radioButtons('resume', 'Summary',
                   c('Individual',
                     'Múltiple'), 
                   inline = TRUE),
      conditionalPanel("input.resume === 'Individual'",
                       selectInput('xcol', 'Variable X', names("fileInput$file1"),
                                   selected = names("fileInput$file1")[[1]])
                       )
    ),
    mainPanel(h3("Muestra del archivo cargado:"),
              tableOutput('contents'),
              verbatimTextOutput("summary")
    )
  )
)

I´m trying to show in a selectInput the names of the variables that a file has. The idea is that the user upload a file in the app and he can select any variable in the selectInput. I´m trying to do this but I don´t realize my mistake. I found this answer but it didn´t helped me. Selecting record date with selectInput in shiny R 
This is the Ui.R code: I don´t get the names in my selectInput. 
library(shiny)
ui<-fluidPage(
  titlePanel(title = "Prueba"),
  sidebarLayout(
    sidebarPanel(
      fileInput('file1', 'Cargar archivo',
                accept = c(
                  'text/csv',
                  'text/comma-separated-values',
                  'text/tab-separated-values',
                  'text/plain',
                  '.csv',
                  '.tsv'
                )
      ),
      checkboxInput('header', '¿Contiene Encabezado?', TRUE),
      radioButtons('sep', 'Delimitador',
                   c(Comma=',',
                     "Punto y coma"=';',
                     Tab='\t'),
                   ','),
      radioButtons('quote', 'Quote',
                   c(Ninguna='',
                     'Dobles'='"',
                     'Simples'="'"),
                   '"'),
      radioButtons('resume', 'Summary',
                   c('Individual',
                     'Múltiple'), 
                   inline = TRUE),
      conditionalPanel("input.resume === 'Individual'",
                       selectInput('xcol', 'Variable X', names("fileInput$file1"),
                                   selected = names("fileInput$file1")[[1]])
                       )
    ),
    mainPanel(h3("Muestra del archivo cargado:"),
              tableOutput('contents'),
              verbatimTextOutput("summary")
    )
  )
)

原文：https://stackoverflow.com/questions/40517940

更新时间：2022-03-04 12:03

最满意答案

 下面的代码可以解决问题。  
var selectedRowsArray= [];


$.each($("input[name='eachCheckbox']:checked").parents("tr"), function () {


ID= $(this).find('td:eq(1)').text(); 
var found = selectedRowsArray.filter(function (el) {
    return el.ID === ID;
});
if (found.length === 0) {
    selectedRowsArray.push({                   
        ID: ID,
        Col2value : $(this).find('td:eq(2)').text(),
        Col3value : //somevalue manupulated,
        Col4value : //somevalue manupulated
    });
} else {
    // Do the updating here with the object `found`
}

});
 
 链接到解决方案https://jsfiddle.net/y7jqb5hp/3/ 

The below code would do the trick.  
var selectedRowsArray= [];


$.each($("input[name='eachCheckbox']:checked").parents("tr"), function () {


ID= $(this).find('td:eq(1)').text(); 
var found = selectedRowsArray.filter(function (el) {
    return el.ID === ID;
});
if (found.length === 0) {
    selectedRowsArray.push({                   
        ID: ID,
        Col2value : $(this).find('td:eq(2)').text(),
        Col3value : //somevalue manupulated,
        Col4value : //somevalue manupulated
    });
} else {
    // Do the updating here with the object `found`
}

});
 
Link to the solution https://jsfiddle.net/y7jqb5hp/3/

在Shiny中selectInput的问题(Problems with selectInput in Shiny)

最满意答案

相关问答

如何使用jquery遍历具有嵌套对象的数组？(how to loop through an array with nested objects using jquery?)[2022-09-13]

在jquery中通过php数组迭代(Iterate through php array in jquery)[2022-07-19]

jQuery递归地遍历对象数组并返回一个值(jQuery iterate through array of objects recursively and return a value)[2023-11-13]

如何在循环中找到对象数组的和值？(How do I find the sum value of an array of objects in a loop?)[2023-11-14]

如何在jquery中从$ .each循环创建一个对象数组(how to create an array of objects from an $.each loop in jquery)[2023-07-11]

如何遍历一个对象数组并在chckebox循环中替换一个对象：检查每个函数 - jquery(How to iterate through an array of objects and replace one object while in the loop of chckebox : checked each function - jquery)[2023-10-02]

Jquery：匹配两个数组的索引，字符串和对象来替换对象中的文本？(Jquery: Matching indexes of two arrays, string and object to replace text in object?)[2022-03-12]

jQuery迭代循环删除元素(jQuery iterate through loop delete elements)[2021-07-23]

jQuery循环遍历一个对象数组(jQuery looping through an object array)[2022-03-12]

用jquery循环一个对象数组？(loop over an array of objects with jquery?)[2021-12-23]

相关文章

最新问答