Google Apps脚本页眉/页脚清除和替换 [英] Google Apps Script Header/Footer Clear and Replace

问题描述

我有一个脚本，可以在发布新文档版本时更新Google Docs的页眉和页脚(通过从AODocs加载项中检索参数).

I have a script that updates Google Docs' header and footer (by retrieving parameters from the AODocs add-on) when a new document version is published.

我的问题是，footer.clear()方法似乎并未擦除页眉(或页脚)，并在该部分的顶部留下了回车符.后续版本在页脚空间中保持增长".

My problem is that the footer.clear() method doesn't seem to erase the header (or footer) and leaves a carriage return at the top of the section. Subsequent versions keep "growing" in the footer space.

这是一个已知问题吗?我做错了吗?(我从模板中插入一行，以便也可以进行分页.

Is this a known issue? Am I doing it wrong? (I pull in a line from a template so that I can have pagination, too.

下面是页脚部分的代码段:

Here's a code-snippet for the footer portion:

var footerTemplate = headerFooterTemplateDoc.getFooter();
var footerParagraphs = footerTemplate.getParagraphs();

// Bring in Parameters
var title = request.parameter.title;
var owner = request.parameter.owner;
var revDate = request.parameter.revDate;
var version = request.parameter.version;
var driveFileID = request.parameter.driveFileID;   

if (!DocumentApp.openById(driveFileID).getFooter()) {
 var footer = DocumentApp.openById(driveFileID).addFooter();
 } else {
 var footer = DocumentApp.openById(driveFileID).getFooter();
 footer.clear();
 }

//Write the values
footer.clear();
footer.appendHorizontalRule();
footer.appendParagraph(footerParagraphs[0].copy());
footer.appendParagraph('Title: ' + title + ' - Owner: ' + owner);
footer.appendParagraph('Version: ' + version + ' - Last Revised: ' + revDate).setSpacingAfter(18);

推荐答案

从Apps Script的角度来看，Google文档的结构非常类似于HTML文档.Google文档包含3个主要部分.

From Apps Script's perspective, a Google Doc is structured much like an HTML document. A Google doc contains 3 main section.

• 身体部分
• 标题部分
• 脚下部分

这些部分中的每个部分都可能包含差异元素.

Each of these sections may contains differents elements.

因此，如果要清除Google文档中的所有元素，则必须清除其每个部分中的所有元素.

So, if you want to clear all elements in a Google doc, you have to clear all elements in each of his section.

function ClearAllSectionsOfDocument() {

  var doc = DocumentApp.getActiveDocument(); 
  var bodySection = doc.getBody()
  var headerSection = doc.getHeader()
  var footerSection = doc.getFooter()

  try {
     bodySection.clear();         
    } catch (e) {
     // case last element in body is partial and can't be cleared
     bodySection.appendParagraph("");
     bodySection.clear()
    }

  try {
     headerSection.clear();         
    } catch (e) {
     // case last element in header is partial and can't be cleared
     headerSection.appendParagraph("");
     headerSection.clear()
    }

  try { 
    footerSection.clear();  
    } catch (e) {
     // case last element in footer is partial and can't be cleared
     footerSection.appendParagraph("");
     footerSection.clear()
    }

}

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