I am also interested in this. Either a form that can edit multiple ItemTypes or a view that can show multiple forms at once would be nice.
I so far haven´t found the best solution yet.
The example in my previous image is ugly, as we have two edit buttons. For the use case above I right now load some of the data from the 2nd item on Form load. In addition I added a small link similar to a button so users can modify the 2nd itemtype quickly:
But I still try to find a solution to merge relationship in a similar way.
Basically I want to preserve the regular relationships. But they shall have a button were I can change the view mode. So for example it lists the content as normal, or also display files from sub-levels or connected ItemTypes. I don´t need to edit the other relationships form this position. It´s just an additional view option.
It´s like a combination between regular relationship and tree-grid-view. But without the two relationships tabs. I want to have one relationship type with multi view options.
One solution that works is to use a CUI button inside the relationship that opens a small pop-up that shows the additional content. But I still hope there are better ways to achive something like this.
