自动更新谷歌幻灯片嵌入图像

Question

我有一张 Google 幻灯片，其中嵌入了我从公共 URL 获取的图像。我希望该图像每天在特定时间自动更新，而不是我必须每天打开幻灯片并通过 URL 替换图像。

这是我尝试使用的代码（用实际值替换占位符“SLIDE_ID”和“IMAGE_URL”）但它不起作用。

function updateEmbeddedImage() {
  // Get the slide ID and the image URL
  var slideId = "SLIDE_ID";
  var imageUrl = "IMAGE_URL";

  // Open the slide and get the existing image
  var slide = SlidesApp.openById(slideId);
  var existingImage = slide.getImages()[0];
  
  // Replace the existing image with the new image
  var newImage = UrlFetchApp.fetch(imageUrl).getBlob();
  slide.replaceImage(existingImage, newImage);
}

// Set a time-based trigger to run the script every day at a specific time
function setTrigger() {
  ScriptApp.newTrigger("updateEmbeddedImage")
    .timeBased()
    .atHour(9)
    .everyDays(1)
    .create();
}

我收到消息：

错误 异常：未找到 updateEmbeddedImage @ Code.gs:7

Answer 1

OP 的触发代码可以重复使用。

OP 的脚本要求源 url 必须硬编码到脚本中。这既不方便又容易出错。

• 此脚本应绑定到电子表格。
• 应在 B 列中输入源 URL。
• A 列可以包含 image() 公式来显示图像（并确认 url 有效）。
• 脚本获取所有幻灯片，但假定嵌入图像位于第二张幻灯片上。
• 脚本获取该幻灯片上的所有图像，但假定要替换的图像是幻灯片上的第一张图像。
• 现有的 SourceURL 返回 .getSourceUrl()
• 从电子表格中获取新的 SourceURL
  • 存在错误检查以确保可以找到现有的 SourceURL 并且它不是电子表格中的最后一个 URL。

---

// this script is bound to the spreadsheet containing the urls of the images.
// URL are in column B, beginning in row 1
// Image() formula is in Column A to display the image associated with the url
// to automatically update every day at a specific time, create a Time driven Installatble trigger.
function replaceurl() {

  // get the slide
  var slideId = "<<insert ID>>"
  var slide = SlidesApp.openById(slideId)

  // get the slides; assume the embedded image is on the second slide
  var slides = slide.getSlides()
  var targetSlide = slides[1]

  // get images
  // assume that image to replace is the first image on the slide
  var images = targetSlide.getImages()

  // get the source url of the existing image
  var existingSourceURL = images[0].getSourceUrl()
  Logger.log("DEBUG: Existing Source URL: "+existingSourceURL)

  // get the source url of the next image in the spreadsheet
  // slide urls are in column B
  var ss = SpreadsheetApp.getActiveSpreadsheet()
  var sheet = ss.getSheetByName("SlideDetails")
  var urlRange = sheet.getRange(1,2,sheet.getLastRow())
  Logger.log("DEBUG: URL Range: "+urlRange.getA1Notation())
  // get the values and flatten to return a 1D array
  var urlValues = urlRange.getValues().flat()
  Logger.log(urlValues) //DEBUG
  // get the number of URLs on the spreadsheet
  var valCount = urlValues.length
  Logger.log("DEBUG: # of values in the sheet: "+valCount)

  // find the index of the existing source url (zero-based)
  var existingIdx = urlValues.indexOf(existingSourceURL)
  Logger.log("DEBUG: Index of existing url: "+existingIdx);

  // test if idx of existing url wasn't found AND
  // test if idx of existing url = num of urls
  // indexOf returns -1 if idx is not found
  if (existingIdx != -1 && existingIdx != (valCount-1)){
    // existing Source URL was found and the idx isn't greater than number of urls on the list
    // new Source URL is next on the list
    var newSourceURL = urlValues[existingIdx+1]
    Logger.log("DEBUG: new source url: "+newSourceURL)

    // replace the source URL
    images[0].replace(newSourceURL)
  }
  else{
    // don't change or replace the url
    // don't replace the url
    Logger.log("DEBUG: Image not changed because existing URL is either not found OR was last in the list")
  }
  Logger.log("DEBUG: Done")
} 

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电子表格布局