Support many: true for @keystonejs/fields-authed-relationship

[jesstelford]

Feature request

Is your feature request related to a problem? Please describe.

I'm currently using @keystonejs/fields-authed-relationship successfully to connect the currently logged in user when creating a new Subscription:

keystone.createList('Subscription', {
  fields: {
    group: { type: Relationship, isRequired: true, ref: 'Group.subscriptions' },
    user: {
      type: AuthedRelationship,
      isRequired: true,
      ref: 'User.subscriptions',
      access: {
        create: accessIsUserSu,
        update: accessIsUserSu,
      },
    },
  },
});

However, I cannot use this when the relationship has a many: true, for example adding the user as an owner of a Group.

Describe the solution you'd like

keystone.createList('Group', {
  fields: {
    subscriptions: { type: Relationship, isRequired: true, ref: 'Subscription.group' },
    owners: {
      type: AuthedRelationship,
      isRequired: true,
      many: true,
      ref: 'User.ownedGroups',
      access: {
        create: accessIsUserSu,
        update: accessIsUserSu,
      },
    },
  },
});

Describe alternatives you've considered

1. Have the client set the value, then use a resolveInput or maybe validateInput hook to check that it matches the currently logged in user
2. Create a new list which acts as a many-to-many:

   keystone.createList('GroupOwner', {
     fields: {
       group: { type: Relationship, isRequired: true, ref: 'Group.ownerships' },
       user: {
         type: AuthedRelationship,
         isRequired: true,
         ref: 'User.groupOwnerships',
         access: {
           create: accessIsUserSu,
           update: accessIsUserSu,
         },
       },
     },
   });

Additional context

Why is owners many: true? Because a Group could have more than one owner. Think of them like the "Admins" of a group; there could be one, or there could be many.

When a new group is created, I want the currently logged in user to be automatically assigned as an owner.

[stale]

It looks like there hasn't been any activity here in over 6 months. Sorry about that! We've flagged this issue for special attention. It wil be manually reviewed by maintainers, not automatically closed. If you have any additional information please leave us a comment. It really helps! Thank you for you contribution. :)