Ruby on Rails

I'm new to learning how to think, and programming, actually. While I
don't mind being thrown to the wolves, I have no idea how to fix the
issue I'm struggling with, which is the following:
I currently have a table where two tabs, one, incomplete, and two,
complete have pagination tabs at the bottom of the table. the document
model reads self.per_page = 10, which represents the number of documents
before moving onto the next page. currently, I've made 10 documents, and
can move between pages smoothly. however, when on the complete tab, and
while there is only one entry when clicking for the next page, I'm being
redirected to the incomplete tab, and i don't want that.

some helpful dude, though didn't work was like

@post = Post.paginate(:page => params[:page]) #controller
= will_paginate @post, renderer: BootstrapPagination::Rails #view

where post is changed out with document.

so what i did in the document_controller.rb file was definded a method
index and ended the method. when defining the method, I put @document =
Document.paginate(:page => params[:page]) and the shit just broke.