Add RDF mapping of field_weight as co:index (Issue 1262)

[seth-shaw-unlv]

GitHub Issue: Islandora/documentation/issues/1262

Replaces #6

What does this Pull Request do?

Creates a "Reorder Children" view/tab using the integer_weight_selector provided by the accompanying PR.

Adds an RDF mapping of field_weight as co:index. ('cause everything else in this PR is moving to core: Islandora/documentation/pull/171)

What's new?

• Added the RDF mapping for field_weight
• Does this change require documentation to be updated? We should add some documentation.
• Does this change add any new dependencies? No.
• Does this change require any other modifications to be made to the repository
  (ie. Regeneration activity, etc.)? Re-index for weight values to appear.
• Could this change impact execution of existing code? No.

How should this be tested?

• Apply the PR
• Clear cache
• View the jsonld of a node with a field_weight value and see the co:index predicate with the appropriate value.

Additional Notes:

Although we talked about replacing the 'purl.org/co/index' with 'schema:position', integers are serialized with the type http://www.w3.org/2001/XMLSchema#int; which Google's structured data tester did not like. So, at least for now, we should keep the 'co:index' property until we decide if trying to rewrite Drupal integer types as 'schema:Integer'.

Interested parties

@dannylamb, @Islandora-CLAW/committers

[dannylamb]

Testing now

[dannylamb]

Any reason why we can't bring the code over into the main islandora module? The view would have to stay because it references the weight field, but everything else could just hop on over.

And also... it works. I should mention that.

[seth-shaw-unlv]

We could, but the code is pointless without the weight field to make use of it....

Let me know if you would prefer I bring it over to islandora and I will whip-up a PR.

[dannylamb]

My understanding is that this would work with anything that uses an integer field for sorting and wants to make a view. If the code lives in islandora with the field storage definition, then folks can do that without enabling islandora_defaults.

Also, I'm missing something. Where does the submit button on the view come from? I see the submit function in the code, but can't find where the button comes from.

[seth-shaw-unlv]

Okay, I make the PR on the islandora module this morning.

If I understand it correctly (which I may not), the save button comes gratis with drupal_attach_tabledrag.

[dannylamb]

👍