Kaminari Pagination not effecting the table - ruby-on-rails

Question

I'm using kaminari gem for pagination in my rails application to paginate the categories.
I have implemented all the process, and the pagination links are also being shown. But this is not effecting the table elements list.
Index action in controller
def index
#categories = current_user.categories
#categories = Kaminari.paginate_array(#categories).page(params[:page]).per(5)
end
Index view
<h1>Categories</h1>
<div class="well">
<%= link_to "+ New Category", new_category_path, class: "btn btn-success" %>
</div>
<%= paginate #categories %>
</br>
<%= page_entries_info #categories %>
<table class="table table-bordered table-striped">
<thead>
<tr>
<th>Name</th>
<th>Actions</th>
</tr>
</thead>
<tbody>
<% if current_user.categories.count == 0 %>
<tr>
<td colspan="2">
No categories found. Click the button above to add a new one.
</td>
</tr>
<% else %>
<% current_user.categories.each do |category| %>
<tr>
<td><%= link_to category.name, category %></td>
<td><%= link_to "Edit", edit_category_path(category), class: "btn btn-primary" %>
<%= link_to "Delete", category, method: :delete,
data: { confirm: "You sure?" }, class: 'btn btn-small btn-danger' %>
</td>
</tr>
<% end %>
<% end %>
</tbody>
</table>
Screenshot
As shown in the above picture it is showing all the 7 entries for a pagination of 5/page.
Can some one please explain the reason why it is not working.

Answer 1

I think issue is with your array type. Please try following code.
def index
#categories = current_user.categories.all
unless #categories.kind_of?(Array)
#categories = #categories.page(params[:page]).per(5)
else
#categories = Kaminari.paginate_array(#categories).page(params[:page]).per(5)
end
end
Have you tried this way? Its more optimised, only fetch those records that required.
#categories = current_user.categories.page(params[:page]).per(5)
Solution adopted from:
rails 3,Kaminari pagination for an simple Array