Relational field
Object relations in a meta field
Last updated
Object relations in a meta field
Last updated
The relationships between WordPress objects are treated with a normal meta field.
After selecting the relationship field type this box will appear:
From the left to the right you have:
From - The first entity involved in the relation
To - The second entity involved in the relation
Relation - The relationship between the selected entities
If you select a Bidirectional reaction (see below) a new box called Inversed field on target post will be displayed.
Choose the corresponding field type.
Automatically this field type will be set as a relationship one (inversed of the selected one).
One-to-One - Unidirectional - The current object can be related to one object
One-to-One - Bidirectional - The current object can be related to one object and there is an inversed field on the target object
One-to-many - Unidirectional - The current object can be related to many objects
One-to-many - Bidirectional - The current object can be related to many objects and there is an inversed field on the target object
Many-to-one - Unidirectional - Many objects belonging to the current object can be related to one object
Many-to-one - Bidirectional - Many objects belonging to the current object can be related to one object and there is an inversed field on the target object
Many-to-many - Unidirectional - Many objects belonging to the current object are related to many objects
Many-to-many - Bidirectional - Many objects belonging to the current object can be related to many objects and there is an inversed field on the target object
Suppose you have two custom post types: one called Florist and one called Flower.
The Florist may have many flowers, and any flower belongs to only one Florist.
Create a field called flowers on the Florist and a field called florist on the Flower (create them as simple text).
Then, go to Florist and transform the flowers fields in a One-to-many bidirectional relation:
Select Flower as From entity
Select Florist as To entity
Select One-to-many bidirectional as the relation
Select florist as field target
You are done! automatically on the Flower side, the florist field is now a Many-to-one bidirectional relation.
