Reciprocal relationship, I don't get it...

This topic has 4 replies, 2 voices, and was last updated 2 years, 9 months ago by Shemzone.

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February 15, 2022 at 9:25 PM #33915
Shemzone
Participant
Hi
I have created a relationship (projects-services) and ticked Reciprocal relationship checkbox.
I call the relationship between projects and services from my projects page as the following:
```
$services = MB_Relationships_API::get_connected( [
    'id'   => 'projects-services',
    'from' => get_the_ID(),
    'order'=> 'DESC',
    'order_from' => get_the_title(),
] );

foreach ( $services as $service ) {
   echo $service->post_title;
}
```
Until so far, no problem but what I have to do if I want to display all projects related to a service from a service page?
I don't get what the Reciprocal relationship checkbox is for?
Or do I have to create another relationship between Services and projects and associate manually all the projects to a service? Double work then...
Thank you to enlight me.

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February 16, 2022 at 11:08 PM #33944
Long Nguyen
Moderator
Hi,

The setting reciprocal helps you to avoid showing two meta boxes (connect to itself) when you set the relation from an object type to itself. Like this
```
add_action( 'mb_relationships_init', 'your_prefix_function_name' );
function your_prefix_function_name() {
    MB_Relationships_API::register( [
        'id'   => 'post-to-post',
        'from' => 'post',
        'to'   => 'post',
    ] );
}
```
Screenshot https://monosnap.com/file/QwbCPB9qCcHF8ToqkNHDqjZbbzUWwU

If you set reciprocal for different object types (CPT) like your case, the connection meta box only shows on the from object type page.

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February 18, 2022 at 9:08 PM #33985

Shemzone
Participant

Hi, thank you for your reply. So, if I understand correctly, reciprocal cannot be used for different custom types, right?
So, in my case, I have a relationship between projects and services. A project can have several services. I can list services related to a project. But if I want to list all projects related to a service (a service can be related to several projetcs), how can I avoid to create an new relationship between services and projects and redo the work of select projects related to a service?
Is it doable?
I hope I am enough understandable.
Thank you

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February 19, 2022 at 9:58 AM #33999

Long Nguyen
Moderator

Hi,

Yes, it is possible. You just need to remove the setting reciprocal when registering the relationship. If on a project1 post, you select service1 post related then on the post service1, it will show project1 connected automatically without redoing manually.

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February 19, 2022 at 7:45 PM #34012

Shemzone
Participant

Hi
I got it, it works.
Thank you for your help

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