ActiveRecord-based configuration for mapping fields to Vocabularies

[escowles]

Adds two new ActiveRecord models for managing Ephemera:

• EphemeraProject, which corresponds to a set of EphemeraBoxes/EphemeraFolders using the same controlled vocabularies.
• EphemeraField, which links a field to a controlled vocabulary in the context of a project.

The new workflow for creating a new ephemera project is:

1. Create a new EphemeraProject for the project
2. (Optional) Create a new EphemeraField for each field that should linked to Vocabulary
3. Create a EphemeraBox in the EphemeraProject
4. Add EphemeraFolders (where the form fields will use the Vocabularies selected in step 2).

Fixes #1255

[coveralls]

Coverage increased (+0.004%) to 99.818% when pulling a3d051e on ephemera-project into 19ad198 on master.

[tpendragon]

Spinning this up to take a look now

[tpendragon]

Couple simple deletes, but some other questions:

1. We need a way to get to the "Ephemera Projects" screen.
2. Should we index + facet "Ephemera Project"? Or maybe associate it with a collection?
3. I don't see any changes to ability.rb or load_and_authorize_resource - are permissions not being checked?

[tpendragon]

Delete?

[tpendragon]

Delete?

[tpendragon]

Delete?

[tpendragon]

Delete?

[escowles]

I've deleted the unused javascripts/stylesheets and added some navigation to the front page. I've also added basic access control enforcement, but will defer more auth work to #1302

Should we index + facet "Ephemera Project"? Or maybe associate it with a collection?

For indexing, the box does index the EphemeraProject name and id, and that displays on the show page. EphemeraFolders just index the id so it can be used to find the appropriate controlled vocab fields. We could also index the EphemeraProject name there too — maybe we should just index it the same way as Collections, so we could effectively use the EphemeraProject instead of Collections?

[coveralls]

Coverage increased (+0.004%) to 99.818% when pulling 99d40f1 on ephemera-project into 19ad198 on master.

[tpendragon]

maybe we should just index it the same way as Collections, so we could effectively use the EphemeraProject instead of Collections

👍 (Now 👎)

Edit: I changed my mind - probably not. Collections have meaning for DPUL, after all

[escowles]

I was torn about this because I think the EphemeraProject is going to map to a Collection, but clearly serves a very different purpose. And I definitely don't want to have a bunch of redundant Collection behavior on EphemeraProject.

So I'll index it as its own thing and provide a link from the EphemeraFolder like is already there for EphemeraBox, to make it easier to navigate up to the project.

[coveralls]

Coverage increased (+0.004%) to 99.822% when pulling cbb7be5 on ephemera-project into ec36c7c on master.