Reloading custom fabricJS canvas objects from JSON?

[Milou6]

Hello all,
I have been stuck on an issue trying to reload custom fabricJS objects from JSON, and after extensive search and a detailed question on stackoverflow (posted almost 2 weeks ago), still stuck on it.

The original question is right here.

As I mentioned on the question, I added non-minified imports of fabricJS to be able to see exactly where in the source-code an error occurs. But ideally, I'd like to understand what am I doing wrong without having to play with source code.

Any help, even pointing me to someone who could help me with this, is highly appreciated.
Thank you all for your work on this awesome project!

[asturur]

Your code has an issue, is not following the polyline structure.
A polyline starts like this:

new fabric.Polyline(points, options)

And so the fromObject for the polyline specifically is:

  fabric.Polyline.fromObject = function(object, callback) {
    return fabric.Object._fromObject('Polyline', object, callback, 'points');
  };

Try to have the correct initialize function and a fromObject function that refer to points on the last argument, i assume it could fix your issues

[Milou6]

@asturur Really appreciate your help. The fix works great! 😁
If that's okay with you, I'll post your answer on my original SO question, so maybe it helps someone else in the future.

[asturur]

Sure, the more people read the better.