BB-634: feat(editor): Add Series to Series relationships support

[atharvsp02]

Problem

Ticket: BB-634

BookBrainz currently does not support relationships between Series entities. Users cannot link related series (eg. subseries, translations etc.) to each other.

Solution

Added SQL migration with three new Series-to-Series relationship types,

• Subseries, Translation, and Followed By.

Note: IDs 124, 125 and 126 are based on my local database where max existing ID was 123 (Foreword). Please adjust if production has different values.

Areas of Impact

• Database: New relationship types added to bookbrainz.relationship_type table
• Entity Editor: Updated filter to allow Series-to-Series search
• User Flow: Users can now create relationships between Series entities

Screenshot

Before(No Series shown)

After

Let me know if you have any suggestions or changes you’d like me to make.

[MonkeyDo]

Thanks for looking into this improvement !

[MonkeyDo]

Ah, so you should be able to omit this column and not have to set a specific id for the rows.
An ID will be automatically generated.

This mean you'll have to remove the values in some other way in the down.sql script, for example by label, or where both source and target entity type are "Series"

[atharvsp02]

Removed specific IDs and deletion now uses labels

[MonkeyDo]

This can be refactored, I think it's currently hard to understand the reasoning

if entity.type === 'Series'
  return baseEntity.type === entity.entityType || baseEntity.type === 'Series'
else
  return true

[atharvsp02]

Updated the filter logic as suggested