We have many categories with different group permissions. Sometimes links are cross-posted so a user tries to access a category where he does not currently have permission. How can I show a specific reason, like “You are not a member of Group XYZ- click here to join.”?
I’ve already customized the text for page_forbidden.title, but only generically, like “You need to join a group, click here for a list of all the groups”. How can I make it specific? Could this be done with a plugin or theme component?
