应用于数组的可变数量的动态过滤条件

Question

我正在尝试使用可变数量（0 到 3）的本身动态的过滤条件来过滤数组。例如，一个过滤条件基于用户从 Google 表格上的下拉列表中选择的名称。如果过滤条件不是动态的（例如名称是硬编码的），则它可以工作。请参阅下面的行。

const filterFn1 = "x => x[0] === 'John Doe'";

我尝试过这个，但 Google Apps 脚本似乎无法识别new Function

const filterFn1 = new Function("x => x[0] === '" + name + "'");

完整代码：

function myFilter() {
  const ss = SpreadsheetApp.getActiveSpreadsheet();
  const shtDash = ss.getSheetByName('Dashboard');
  const shtDB = ss.getSheetByName('Database');

  const lastDBRow = shtDB.getLastRow();
  const arrData = shtDB.getRange(2,1,lastDBRow-1,4).getValues();

  let arr = [];

  const name = shtDash.getRange('B1').getValue();
  if (name !== '') {
    const filterFn1 = "x => x[0] === '" + name + "'";
    arr.push(filterFn1);
  } 

  const category = shtDash.getRange('B2').getValue(); 
  if (category !== '') {
    const filterFn2 = "x => x[1] === '" + category + "'";
    arr.push(filterFn2);
  } 
  
  const software = shtDash.getRange('B3').getValue(); 
  if (software !== '') {
    const filterFn3 = "x => x[2] === '" + software + "'";
    arr.push(filterFn3);
  } 

  const filtered = arrData.filter(x => arr.every(f => f(x)));
}

Answer 1

尝试：

function myFilter() {

  const ss = SpreadsheetApp.getActiveSpreadsheet();
  const shtDash = ss.getSheetByName('Dashboard');
  const shtDB = ss.getSheetByName('Database');

  let arrData = shtDB.getRange(2, 1, shtDB.getLastRow()-1, 4).getValues()

  const filters = shtDash.getRange(`B1:B3`).getValues().flat()
  
  filters.forEach((filter, index) => {
    if (filter.length) arrData = arrData.filter(row => row[index] === filter)
  })

  return arrData

}

这将检查该filter值是否不为空，然后将按每行的每个arrData值进行过滤。indexfilterindex

例如，如果第一个过滤器是X，arrData则将过滤包含X索引处的所有行0。如果第二个过滤器是Y,arrData将过滤包含Y索引处的所有行1等。

如果您需要更多解释或修改，请告诉我！

非索引版本：

function myFilter() {

  const ss = SpreadsheetApp.getActiveSpreadsheet();
  const shtDash = ss.getSheetByName('Dashboard');
  const shtDB = ss.getSheetByName('Database');

  let arrData = shtDB.getRange(2, 1, shtDB.getLastRow()-1, 4).getValues()

  const filters = shtDash.getRange(`B1:B3`).getValues().flat()
  
  filters.forEach(filter => {
    if (filter.length) arrData = arrData.filter(row => row.includes(filter))
  })

  return arrData

}

了解更多：

• 数组.过滤器(元素)
• Array.forEach((元素，索引))