`op: relationship_create`

Create a relationship edge between entities.

Allowed phases

Phase	Status
`preflight`	✗ forbidden
`core`	✓ allowed
`side_effects`	✗ forbidden

Syntax

- op: relationship_create
  relationship: artist_followers
  to_id: event.artist_id
 
- op: relationship_create
  relationship: user_friends
  to_id: event.friend_id
  id: "concat(event.user_id, '_', event.friend_id)"

Parameters

Field	Required	Description
`relationship`	yes	Declared relationship name
`to_id`	yes	Target entity ID expression
`id`	sometimes	Required for `one_to_many` cardinality

Behavior

from_id defaults to the current entity. When emit_events.created is set on the relationship, a domain event fires through the normal pipeline.
Pair unique: true on the relationship with a preflight reject for semantic duplicate errors.

relationship_remove

op: relationship_create

Allowed phases

Syntax

Parameters

Behavior

Related operations

See also

`op: relationship_create`