Google Slides API cannot read content of slide from an instance of page (Node.Js)

Question

I am trying to read text from a slide presentation (as a work around to copying and pasting since all of the slides have the same exact format). When using this code:

res.data.pageElements.forEach((file) => {
    let textElements = file.shape.text.textElements;
    textElements.forEach(function(each){
        console.log(each.textRun.content);
    });
});

Even though the response says its there if I use console.log(res.data.pageElements.shape.text.textElements.textRun), referencing the way I did, returns undefined.

Please let me know if there is a solution to my problem, or if you know a work around to copy a side from presentation X to presentation Y. Thanks in advance!

There is an issue tracker for this: https://issuetracker.google.com/36761705

Answer 1

How about this modification? From your script, I supposes that you retrieve res using slides.presentations.pages.get().

Modification point:

• Objects with and without res.data.pageElements.shape.text.textElements.textRun are existing in the elements of the returned object.
  • res.data.pageElements which has no property of shape.
  • res.data.pageElements.shape which has no property of text.
  • res.data.pageElements.shape.text which has no property of textElements.
  • res.data.pageElements.shape.text.textElements which has no property of textRun.

I think that this might be the reason of your issue.

Modified script:

slides.presentations.pages.get({
  presentationId: presentationId,
  pageObjectId: pageObjectId,
}, (err, res) => {
  if (err) {
    console.log(err);
  } else {
    res.data.pageElements.forEach((file) => {
      if (file.shape && file.shape.text && file.shape.text.textElements) {
          let textElements = file.shape.text.textElements;
          textElements.forEach(function(each) {
          if ("textRun" in each) {
            console.log(each.textRun.content);
          }
        });
      }
    });
  }
});

Note:

• I think that you can also use if ("shape" in file && "text" in file.shape && "textElements" in file.shape.text) { instead of if (file.shape && file.shape.text && file.shape.text.textElements) {.
• If you retrieve res using slides.presentations.get(), please modify res.data.pageElements.forEach((file) => {}) to res.data.slides.forEach((slide) => {slide.pageElements.forEach((file) => {})}).

If I misunderstand about your issue, please tell me. I would like to modify it.