WIP: Do not clone cross references twice

[saschahofmann]

As explained in #544, I am trying to keep track of instances that have been cloned before and reuse that copy for later references that otherwise would be cloned again.

I probably still need to write a lot more tests but before I do that I wanted to ask whether you're happy with the direction @jackton1 ?

I added on example test, are you ok with me adding cross-references between the tables or should I create new models and do you prefer one big test for all cases or individual ones?

[pep8speaks]

Hello @saschahofmann! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file model_clone/mixin.py:

Line 501:41: E231 missing whitespace after ':'
Line 501:41: E701 multiple statements on one line (colon)
Line 501:42: E225 missing whitespace around operator
Line 623:36: E231 missing whitespace after ':'
Line 623:36: E701 multiple statements on one line (colon)
Line 623:37: E225 missing whitespace around operator

Comment last updated at 2022-03-23 10:20:49 UTC

[saschahofmann]

@jackton1 do you have any feedback on this? If this is a change you want I'll push it over the finish line!

[jackton1]

@jackton1 do you have any feedback on this? If this is a change you want I'll push it over the finish line!

Hi @saschahofmann, sorry for the late response, I’ll be happy to review the change when it’s ready for review.

[saschahofmann]

Closing in favor of #579