[Resolved] Check if relationship exists between two particular posts

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[John Johansen]

Tell us what you are trying to do?
I want to check if a relationship exists between a given parent post and a given child post.
Please note that this is NOT to check whether ANY child posts exist for the given parent post.
Please also note that this question is related to, but not the same as, another question about outer joins in post relationships.

Is there any documentation that you are following?
Toolset Relationship document.

Is there a similar example that we can see?
No, but I can describe what I am trying to do.
I have two custom post types, Patrons and Locations. I created a many-to-many relationship between them, where Patrons is the 'parent' and Locations is the 'child'.'
If I know the ID of a Patron entry and the ID of a Location entry, can I determine whether there is a relationship set between them?
What is the link to your site?

hidden link

[Luo Yang]

Hello,

It is possible within Views plugin, for example, you can create a post view:
- Query posts of post type "Locations"
- Filter by:
a) Select posts in a Patrons Locations relationship that are related to "Specific Patrons post".
https://toolset.com/documentation/post-relationships/how-to-display-related-posts-with-toolset/#displaying-many-related-items
b) Include only posts with the following IDs: 123(Specific location post ID)
https://toolset.com/documentation/user-guides/filtering-views-query-by-post-id/

Then it will be able to check if "Specific Patrons post" is related with "Specific location post ID"

In section "Loop Editor", within [wpv-items-found] ... [/wpv-items-found], display text as what you want.

[John Johansen]

My issue is resolved now. Thank you!