Add a 'weight' field to the Repository Item content type

[dannylamb]

We'll be using the weight module to add page ordering for paged content. We should go ahead and add that to the Repository Item content type provided by islandora_defaults.

1. Add the weight module to the islandora_defaults info file:
2. Add a weight field to the Repository Item content type
3. Remove the weight field from display
4. Add the weight field to the form under the System section.
5. Add an RDF mapping for the weight field.
6. Re-export the islandora_defaults feature

[dannylamb]

Linking to #932

[manez]

Playing with this a bit to test for the sprint.

I'm wondering what we should set for a default range, and can we set a default to auto-increment by assigning the heaviest weight? In other words, make it so that each new page gets added to the end of the book by default, if using the GUI. I tried a range of 1000, and nothing choked, but I assume that anyone building books page-by-page from the front end would rather not select the exact page number every time.

[dannylamb]

@manez We use the prepopulate module to give the member of field a default based on the parent. No reason why we couldn't use the same trick and query for the highest weight of the parent and bump that by one for a default value.

[seth-shaw-unlv]

I've used 1000 as a range with no issues.

[seth-shaw-unlv]

I don't know if this is just me, but the field_weight settings aren't sticking. I updated my test site to the current master and did the feature import, but it is still showing the active config settings as only the default range: 20 with the min settings as only in the module config:

I tried to update them using the field edit form (http://localhost:8000/admin/structure/types/manage/islandora_object/fields/node.islandora_object.field_weight) but those didn't stick either.

I have the latest weight version (8.x-3.1).

Hmmm... opening the field edit page throws a number of notices... something is going on with the module.

[seth-shaw-unlv]

Alright, I checked my other test site that was already using the weight module and it isn't throwing any errors on the edit form, but it also doesn't have all the same form fields (despite the modules both reporting the same version).

[seth-shaw-unlv]

Okay, I see what's going on here... the new field_weight is using the integer field type, not the weight field type. My dev box got confused because it already had a field_weight using the weight field type and so the settings didn't apply.

[dannylamb]

Resolved via Islandora/islandora_defaults@09355d9