Errors on some collections details pages

[fsteeg]

See list of all collections: http://dd.lobid.org/?q=*&t=collection

e.g. http://dd.lobid.org/collections/akademieschriften.bbaw.b.de

[SBRitter]

Deployed to staging: http://quaoar1.hbz-nrw.de:5001/collections/akademieschriften.bbaw.b.de

Fixed this for "language" and "subject". The cause was that sometimes these fields come as simple fields or as array (see commit 6218f12c04ef60cffa6f4d99cb5c2976ef3030d3).

But before opening the PR: I have no idea how many other fields can come with arrays or simple fields. I think we have two options:

(1) Control during transformation whether the data comes as an array or a simple field (some fields are arrays with one single element, then, in some cases)

(2) When building the UI table, handle the possibility for every field.

[fsteeg]

Since you already implemented the conditional logic on the UI level, I'd suggest you extract that to a reusable template block and use that for all the fields (as we discussed offline yesterday).

[acka47]

+1 for fixing the concrete issue

[SBRitter]

Fixed this now for every field, i.e. every field can come as simple field or array, we don't mind. However, there is something not solved yet: When data comes as an array, we don't know whether the strings should be rendered as a hyperlink or not. The problem is that these arrays can contain strings starting with http and others that don't. But maybe this is already part of the solution: we could check how the string starts and then decide as to whether we have it hyperlinked or not. What do you think, @fsteeg and @acka47?

[fsteeg]

That's a different issue, and we should approach it after #9, which replaces many links with labels.

[acka47]

Please deploy the fix and I will add another issue for the link issue when needed.

[fsteeg]

Deployed to production, closing. See http://digitalisiertedrucke.de/collections/akademieschriften.bbaw.b.de