Restrict access to custom post type based on its taxonomy terms

I'm just beginning to understand the roles and capabilities in Wordpress and I'm not sure that I can do what I would like.

I have a custom post type, cats, that has specific taxonomies such as status, age, breed... And I have a custom role, gallerist.

I would like the gallerists to be able to create, edit, delete and manage only the cats posts that have a specific taxonomy term assigned to them. For example the gallerists would be able to edit the cats posts where age is kitten but not the cats where age is adult.

Is it possible?

Topic user-roles capabilities custom-taxonomy custom-post-types Wordpress

Category Web

1
answered at

You should be able to check the conditions and add capabilities like this:

if(wp_get_current_user('gallerist') AND 
  'cats' == get_post_type() AND 
  has_term( 'status', 'age' )) {  

$gallerist_role = get_role( 'gallerist' );

// Adding a new capability to role
$gallerist_role->add_cap( 'custom_capability' );
}

I am sorry I can not test it but I think it is a start

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