Rails will_paginate and tabs - ruby-on-rails

Question

I have a problem with working my tab along with will_pagination. When i press Tab 2, it will show the correct content, but when i press on the pagination link, example page 2. It will bring me back to my Tab 1 view. After this, when i press back Tab 2, it will appear page 2 content of Tab 2. The problem here is why does it bring my back to my Tab 1 view when i press on the pagination link in Tab 2.
My View Code
<div>
<ul class="nav nav-tabs" id="TabLength">
<% #biscuit.each_index do |i| %>
<% if i == 0 %>
<li class="active"><a data-toggle="tab" href="#<%= #biscuit[i] %>"><%= #biscuit[i] %></a></li>
<% else %>
<li><a data-toggle="tab" href="#<%= #biscuit[i] %>"><%= #biscuit[i] %></a></li>
<% end %>
<% end %>
</ul>
<div class="tab-content">
<% #biscuit.each_index do |i| %>
<% if i == 0 %>
<div class="tab-pane fade in active" id="<%= #biscuit[i] %>">
<div class="row" id="PictureSetting">
<% #testpage.each do |i| %>
<div class="col-md-4" id="ProductPic">
<%= image_tag(i.name , class:"img-thumbnail", size:"180x180") %>
</div>
<% end %>
</div>
<%= will_paginate #testpage, :param_name => 'user_page' %>
</div>
<% elsif i == 1 %>
<div class="tab-pane fade" id="<%= #biscuit[i] %>">
<div class="row" id="PictureSetting">
<% #memberpage.each do |i| %>
<div class="col-md-4" id="ProductPic">
<%= image_tag(i.name , class:"img-thumbnail", size:"180x180") %>
</div>
<% end %>
</div>
<%= will_paginate #memberpage, :param_name => 'choco_page' %>
</div>
<% else %>
<div class="tab-pane fade" id="<%= #biscuit[i] %>">
<div class="row" id="PictureSetting">
<h1>hello</h1>
</div>
</div>
<% end %>
<% end %>
</div>
</div>
Thanks

Answer 1

Based on answer from here, you can design the following code for the problem:
<script>
// open tab on click
$('#TabLength a').click(function (e) {
e.preventDefault();
$(this).tab('show');
// getting tab id
var id = $(e.target).attr("href").substr(1);
// change hash value for all pages
$('ul.pagination > li > a').each(function(i, pageAnchor) {
pageAnchor.hash = id;
});
});
// assign tab id to location hash
$("ul.nav-tabs > li > a").on("shown.bs.tab", function (e) {
var id = $(e.target).attr("href").substr(1);
window.location.hash = id;
});
// open initial hash
var hash = window.location.hash;
$('#TabLength a[href="' + hash + '"]').tab('show');
// UPDATE
$('ul.pagination > li > a').each(function(i, pageAnchor) {
pageAnchor.hash = hash;
});
</script>
It saves currently selected tab into location.hash. and selects it when you navigate to a new page.