This module provides extra validation for entity reference fields, preventing circular references and duplicate references within the same field.
This module adds additional validators for Entity Reference fields.
So far it includes two validators:
- Circular reference validator: This validator prevents an entity reference form linking to the entity that has the entity reference field. For example, this prevents a node entity reference field on node 1 from linking to node 1.
- Duplicate reference validator: This validator prevents an entity reference form linking to the same entity twice from the same field.
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