Cannot add item: item with id x/y already exists

[jayvdb]

When using oscar-stores, I get:

Error: Cannot add item: item with id stores/OpeningPeriod already exists
    at i.value (main.js:59)
    at i.value (main.js:59)
    at new i (main.js:59)
    at l (main.js:59)
    at a.mounted (main.js:59)
    at Yt (main.js:7)
    at Qi (main.js:7)
    at Object.insert (main.js:7)
    at S (main.js:7)
    at _e.__patch__ (main.js:7)
Vt @ main.js:7

[jayvdb]

Note that it fails to show anything when that happens. Disabling that app in the graph would be a better result - esp. if it is mentioned in the sidebar as disabled.

And after disabling stores, which I am not using anyway, it works for django-oscar, and a few other medium sized apps! It looks great, but it is very hard to find a model.

A little curious, the console log shows some unnecessary precision

Stabilization progress 50%
main.js:59 Stabilization progress 55.00000000000001%
main.js:59 Stabilization progress 60%

[meshy]

I have encountered this issue myself now, so I know the cause. I have a local branch that reproduces the error, but I suspect the solution will not be straightforward. I'll push that branch when I get a chance, and will look into what I can do to address this.

EDIT: I should have said the cause...

If two model classes have the same name in the same app, then we'll hit this error.

I encountered this when a superclass was defined outside of the models file, and had the same name as the concrete model subclass.