Error saving many to many relations

[teeli]

I followed this example using Silverstripe 3.1.8: https://github.com/UndefinedOffset/SortableGridField/blob/master/docs/ManyManyExample.md

All I get is the following error:

[User Error] Sort column OrderKey must be an Int, column is of type
GET /admin/pages/edit/show/1
Line 167 in /var/www/default/sortablegridfield/code/forms/GridFieldSortableRows.php

If I manually change the sort order in the DB to something else than 0, it works, but when I add new items to the grid, the value always defaults to 0.

[UndefinedOffset]

Could you post your implementation that is causing this issue? You can strip out all but the relevant stuff ($many_many, $many_many_extraFields and the implementation line in getCMSFields).

[UndefinedOffset]

Also I have a thought, do you per-chance have the gridfield named differently than the many many relationship? If so try making it match see if that fixes the issue (I suspect it will).

[teeli]

Ah, yes. The gridfield was named "Artist" and the relationship was "Artists". Changed both to plural and now it works.

Thanks for the help! Should've seen that typo :)