How to keep an item at a fixed position in a Sortable list?

[jasonslyvia]

How to keep an item at a fixed position in a Sortable list?

[jasonslyvia]

I kind of got it working and here's a brief demo, is it what you expected?

[jasonslyvia]

It's currently unsupported but I think it's achievable.

[AaronHarris]

Hmm, I can think of a few different instances where you'd want to specify the "allowed" positions that an element should be able to take (eg. only every even position, or every 5th position, or beginning or end, only next to some other type of element, etc). Which methods would one have to modify to support something like this?

I'm assuming the right methods would be swapArrayItemPosition (to control how / which items were swapped) and either calculateNewIndex or getIndexByOffset? I'm think the easiest way to support (just my use case - every other item) would be to mod 2 any newindex that would be assigned to the placeholder (I already have it so that when the user drops the item, it re-renders with the proper elements in the right spot).

[jasonslyvia]

If we were to add this new feature, I'd like it to be adoptable by anyone other than only your case.

The solution I'm thinking of is providing an option like sortTarget, and only children's className match sortTarget will be sortable, anything else remains untouched.

I'll let you know if it works out, also a PR is warmly welcomed!

[AaronHarris]

Yes that's exactly what I was looking for! Much appreciated!

[jasonslyvia]

Cool, I'll add according tests and release a new version.

[jasonslyvia]

released 1.4.5