I want to fetch all post titles from the database and make them as a list visible in an iFrame inside the admin panel of the theme that I'm currently developing.
I'm using following function to list all the post titles:
And I'm getting following error when I use the function inside an iFrame:
Fatal error: Call to a member function get_results() on a non-object in
The function works as expected outside of an iFrame but it does not work inside the iFrame, any suggestions, how I could make it work?