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Finding the index of a placeholder text element in a google doc table using app script

As the title suggests I am trying to find the index of a placeholder text element in a google doc table so that I can replace it with text stored in a different doc.

I can get the pre-formatted text to be added to the document - not the place in the table required - using other examples I have found on stackoverflow.

However I am unclear as how to find the index of the placeholder element within one of many tables in the template document.

I need the index of the placeholder text to be able to use the insertParagraph function.

To add slightly more detail: I am able to find the placeholder text and insert an image using the below code.

function replaceTextToImage(body, searchText, image, width) {
var next = body.findText(searchText);
if (!next) return;
var r = next.getElement();
r.asText().setText("");
var img = r.getParent().asParagraph().insertInlineImage(0, image);
if (width && typeof width == "number") {
  var w = img.getWidth();
  var h = img.getHeight();
  img.setWidth(width);
  img.setHeight(width * h / w);
}
return next;

};

However, I need to preserve the formatting of the doc I want to import. So I open the document with the formatted text and then loop through the different element types with a conditional to insert the text/image if the element type is matched. This is why I need the index of the placeholder text. See for function below:

 function replaceTextWithDoc(body, searchText, id) {
  let doc = DocumentApp.openById(id)

  var numElements = body.getNumChildren();
  var index = numElements;

  for (var i = 0; i < numElements; i++) {
    var child = body.getChild(i);
    if (child.asText().getText() == searchText){
      index = i;
      body.removeChild(child);
      break;
    }
  }
  var totalElements = doc.getNumChildren();
  for( var j = 0; j < totalElements; ++j ) {
    var element = doc.getChild(j).copy();
    var type = element.getType();
    if( type == DocumentApp.ElementType.PARAGRAPH )
      body.insertParagraph(index, element);
    else if( type == DocumentApp.ElementType.TABLE )
      body.insertTable(index, element);
    else if( type == DocumentApp.ElementType.LIST_ITEM )
      body.insertParagraph(index, element);
    else
      throw new Error("According to the doc this type couldn't appear in the body: "+type);
    }
  }

Here is an example of the placeholder text ( {iText} ) in a table: https://docs.google.com/document/d/1mZWpQqk4gYAF6UCRALrT8S99-01RYNfwni_kqDzOg7E/edit?usp=sharing

Here is an example of text and images that I need to replace the placeholder text with - maintaining all/any formatting. https://docs.google.com/document/d/1wuX0g5W2GL0YJ7admiv3TNEepb_zVwQleKwazCiAMBU/edit?usp=sharing

about 4 years ago · Juan Pablo Isaza

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Accepted Answer · 2022-06-30T12:30:37.636Z

Issue:

If I understand you correctly, you want to copy the contents of one document (made up of text and inline images) to certain table cells that contain a certain placeholder text.

Solution:

In that case, I'd suggest the following:

Iterate through all tables in the target document, using Body.getTables().
For each table, iterate through all its cells.
For each cell, check whether its text contains the placeholder.
If the placeholder is included, clear the current cell content via TableCell.clear().
Iterate through all source document elements (see for example, this answer).
For each element, check its type (Element.getType()).
If the element is a paragraph, append the paragraph to the cell via TableCell.appendParagraph.
If the element is an image, append it via TableCell.appendImage.

Code sample:

const PLACEHOLDER = "{iText}";

function myFunction() {
  const doc = DocumentApp.openById(TARGET_ID);
  const sourceDoc = DocumentApp.openById(SOURCE_ID);
  const body = doc.getBody();
  const tables = body.getTables();
  tables.forEach(table => {
    const numRows = table.getNumRows();
    for (let i = 0; i < numRows; i++) {
      const row = table.getRow(i);
      const numCells = row.getNumCells();
      for (let j = 0; j < numCells; j++) {
        const cell = row.getCell(j);
        const cellText = cell.editAsText();
        const text = cellText.getText();
        if (text.includes(PLACEHOLDER)) {
          cell.clear();
          appendSourceContent(sourceDoc, cell);
        }
      }
    }
  });
}

function appendSourceContent(doc, cell) {
  const numChildren = doc.getNumChildren();
  for (let j = 0; j < numChildren; j++) {
    const element = doc.getChild(j).copy();
    const type = element.getType();
    if (type == DocumentApp.ElementType.PARAGRAPH) {
      cell.appendParagraph(element);
    } else if (type == DocumentApp.ElementType.INLINE_IMAGE) {
      cell.appendImage(element);
    }
  }
}

Note:

Add additional else if blocks if the source content can have different ElementTypes than paragraphs and inline images.
I assumed that you want to preserve none of the current content in the table cell.

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