Is it still feasible to direct an internal link to a page that has not been created yet, without specifying the page number ?

[nsimonovici]

Hi there,

As I switch from fpdf to fpdf2, I notice a change in behaviour in my internal links.

I was using the "add_link" to set up internal links, making the cell clickable, while saving the created link (result out of "add_link") in a list.

As my layout can move depending of pictures or texts sizes, I did not want to hardcode the page to where links are directing.
That's why I would trigger the "set_link" method of desired link in the list at the moment of my choice when building my PDF file, directing automatically the priorly created link in cell to a page created afterwards.

But that was before. Now I can read from the latest release that :

And my "trick" does not work anymore, sadly.

Therefore is there a retro compatibility way to achieve what was working perfectly in fpdf ? Maybe downgrading my package might by a solution. EDIT : it is not (tried version 2.6.0)

Thanks for any kind of assistance

[Lucas-C]

Hi!

Thank you for reaching out @nsimonovici and welcome to the fpdf2 community 😊

What you describe is very strange and may be a bug...
FPDF.add_link() in the latest releases should be fully backward compatible with the earlier versions of fpdf2 and even PyFPDF.

We only added some extra features to it in v2.6.1.
Calling set_link() is simply now optional: whereas you previously had to call link = pdf.add_link() and pdf.set_link(link, page=2), you can now just make a single call link = pdf.add_link(page=2), if you know the target page number upfront.
But calling set_link() is still valid.

We have a set of unit tests regarding add_link() that ensure the same features still work as they used to:
https://github.com/PyFPDF/fpdf2/blob/master/test/test_links.py
And those tests are all passing.

Could you please provide some minimal Python code reproducing your issue?
If you don't know how to build a minimal reproducible example, check this tutorial: https://stackoverflow.com/help/minimal-reproducible-example

[Lucas-C]

A fix is coming in this PR: #730

You can test it using pip:

pip install git+https://github.com/PyFPDF/fpdf2.git@master

[nsimonovici]

I can confirm it is now working as expected ! Kudos !

Any idea when would that be published in an official version ?

[Lucas-C]

Any idea when would that be published in an official version ?

I'm planning on releasing a new version next week.

[Lucas-C]

A fix has been released in v2.7.0: https://github.com/PyFPDF/fpdf2/releases/tag/2.7.0

[nsimonovici]

Thanks Lucas you're amazing, that was handled smoothly.

All the best !