Disallow editing of Instance fields controlled by underlying MARC record

Purpose: To restrict editing of Instance fields controlled by the underlying MARC bib record. These fields should only be editable via:
1) Data Import updating the SRS MARC Bib, which in turn updates the related Instance fields
or
2) MARCcat creating or editing a record, which in turn updates the related SRS MARC bib record, which in turn updates the related Instance fields

As a staff person
I want to be restricted from editing instance fields controlled by underlying Source MARC records
So that the Instance and SRS record stay synchronized and I do not lose the specificity provided by the MARC record

Scenarios

1. Scenario 1
   • Given the Inventory Instance edit view
   • When there is an underlying MARC bibliographic record in SRS (Instance metadata_source = MARC)
   • Then restrict the related Instance fields from being edited, by
     • Disallowing the cursor from being placed in them or any data being entered
     • And greying them out
2. Scenario 2
   • Given the Inventory Instance edit view
   • When there is data in a particular field in an underlying MARC bibliographic record in SRS
   • Then display that data in the non-editable, greyed-out Instance field, so that the user knows it's there
3. Scenario 3
   • Given the Inventory Instance edit view
   • When there is a field that is not controlled by the underlying MARC bibliographic record in SRS
   • Then allow the user to edit it and save the record, like normal.
   • These fields are:
     • Administrative data (created by/when, last updated by/when) - system controlled
     • Suppress from discovery, Staff suppress, Previously held toggles
     • Instance HRID (system controlled)
     • Metadata source (system controlled - should be MARC)
     • Instance status
     • Add statistical code button
     • Tags (not yet enabled)
4. Scenario 4
   • Given the Inventory Instance edit view
   • When there is a button related to a field or accordion controlled by an underlying MARC bibliographic record in SRS
   • Then do not display the button. [Button is greyed out, rather than hidden. Same for trashcan for deleting data]
   • These buttons are:
     • Add alternative title
     • Add series
     • Add identifier
     • Add contributor
     • Add publication
     • Add edition
     • Add description
     • Add format
     • Add language
     • Add frequency
     • Add range
     • Add note
     • Add electronic access
     • Add subject
     • Add classification
     • Add parent instance
     • Add child instance
5. Scenario 5
   • Ensure automated testing coverage for this new code is 80% plus and confirm with screenshot

NOTE: If questions about Inventory code or PR approvals, check with Niels Erik Gilvad Nielsen