Basically, after setting up the initial "page for post" on the Reading Options, and then add that page to the menu I get the posts when I click on that menu item as expected.
On there I know the post ID (which is the actual page created before setting it as the page for posts) and all the information regarding that same page.
Trouble is, when I click on a specific post, not only the menu item looses its active status, but I can't get hold of that parent page ID.
Is there a way to get that parent page ID, when on a post !?
For reference, I managed to get it with
get_option('page_for_posts'); but that's very ugly. Is not possible that the post associates with it's parent page index ?