Indirect Meta Box Relationship in Bricks

This Pro tutorial shows how to modify a Bricks' query loop parameters to only show the posts of a CPT that is indirectly related to the current single CPT item when using Meta Box.

Consider this scenario:

Custom Post Types:

• Members
• Orders
• Trainings

Requirement: On a single member page, show all the related posts of training. Note that there is no direct relationship between member CPT and training CPT.

Relationships:

• Members and Orders
• Orders and Trainings

Sample posts:

• Training 1 Connected From Order 2.
• Training 2 Connected From Order 1 and 2.
• Training 3 Connected From Order 1.
• Member 1 Connected To Order 1.
• Member 2 Connected To Order 2.

Objective:When viewing Member 1, show trainings 2 and 3. This is because Member 1 is connected to Order 1 and this order is connected to Training 2 and Training 3.

Screenshots:

Relationship: Orders and Trainings

Relationship: Members and Orders

We are also going to ensure that the Section in which the indirectly related CPT items are output gets rendered only if there is at least 1 such published CPT item.

Step 1

Create a Bricks template named say "Single Member" of type "Single".

Edit it with Bricks.

Add a Template setting condition for applying the template to Members CPT.

Add a Section having Post Title and Post Content.

Add another Section having a "Related Training" Heading. We are going to dynamically add "s" at the end of this heading text if there's more than one published indirectly-related training for the current member.

Add a Container having a Block.

Enable Query Loop on the Block. Select Trainings CPT.

Add a Post Title inside the Block.

At this stage, all the training CPT items will be output.

Step 2

Add the following in child theme's functions.php (w/o the opening PHP tag) or a code snippets plugin: