"odoo controller" is not a question. I have edited your post to make the title a question. In the future, please consider using a Question that can make it clear what you ask without requiring people to open your post, as this will often increase the chances people will respond and make everything clearer for others looking for the same answer.

@Tadeusz Jan Karpiński sorry couldn't comment ur reply (no enough karma ) so here is more explanation on what i want to do, i have an index file with html in it and i want to knew if can call that html file using odoo controllers or any other method so i can display it content on odoo app