Will_paginate with hash in Rails - ruby-on-rails

Question

I have controller looks like :
## controllers/lhgs_controller.rb
def index
#per_page = params[:per_page] || 10
#totalsolds = Totalsold.paginate(:per_page => #per_page, :page => params[:page]).order('date asc').group_by{ |s| [s.date, s.store_id, s.nomor] }
end
And views :
## index.hmtl.erb
<div id="totalsolds"><%= render 'totalsolds' %></div>
## views/_totalsolds.html.erb
<% #totalsolds.each do |(date, store, nomor), totalsold| %>
<tr>
<td><%= date.strftime("%d/%m/%Y") %></td>
<td><%= nomor %></td>
<td><%= Store.find(store).name %></td>
<% totalsold.each do |ts| %>
<td><%= ts.qty == 0 || ts.qty == nil ? "-" :prod.qty %></td>
<% end %>
<td>Rp<%= number_to_currency(totalsold.sum(&:value), :unit => "") %></td>
<td><%= link_to "edit", edit_bt_path(:store_id => store, :date => date, :nomor => nomor), :class => "btn btn-primer" %></td>
</tr>
<% end %>
...
...
<div class="row">
<div class="col-sm-6">
<% line 65 %>
<%= page_entries_info #totalsolds %>
</div>
<div class="col-sm-6">
<%= will_paginate #totalsolds, :style => 'float:right;margin-top:-5px;height:30px;' %>
</div>
</div>
I got an error :
ArgumentError in Lhgs#index
Showing C:/Sites/cms/app/views/lhgs/_totalsolds.html.erb where line
65 raised:
The #lhgs variable appears to be empty. Did you forget to pass the
collection object for will_paginate?
I found same question and solution, but I can't figure out how to use it for my case.
UPDATE :
I'm not found anywhere #lhgs variable, I tried to change #totalsolds to #lhgs and now my controller lookslike :
## controllers/lhgs_controller.rb
def index
#per_page = params[:per_page] || 10
#lhgs = Totalsold.order('date asc').group_by{ |s| [s.date, s.store_id, s.nomor] }
#lhgs = #lhgs.paginate(:per_page => #per_page, :page => params[:page])
end
And this an error :
NoMethodError in LhgsController#index
undefined method `paginate' for #<Hash:0x4c034a0>
Use rails console :
irb(main):001:0> #lhgs = Totalsold.order('date asc').group_by{ |s| [s.date, s.store_id, s.nomor] }
.... look at pastebin ......
irb(main):002:0> #lhgs.class
=> Hash
pastebin

Answer 1

Solved
reference
On controller :
def index
#per_page = params[:per_page] || 10
#lhgs = Totalsold.order('date asc').group_by{ |s| [s.date, s.store_id, s.nomor] }
#lhgs_keys = #lhgs.paginate(:per_page => #per_page, :page => params[:page])
end
And on view :
<% #lhgs_keys.each do |k| %>
<% #lhgs[k].group_by{ |s| [s.date, s.store_id, s.nomor] }.each |(date, store, nomor), totalsold| %>
.....
....
<% end %>
<% end %>
<div class="row">
<div class="col-sm-6">
<% line 65 %>
<%= page_entries_info #lhgs_keys %>
</div>
<div class="col-sm-6">
<%= will_paginate #lhgs_keys, :style => 'float:right;margin-top:-5px;height:30px;' %>
</div>
</div>

Answer 2

Try it like this:
# controllers/lhgs_controller.rb
def index
#per_page = params[:per_page] || 10
#totalsolds = Totalsold.paginate(:per_page => #per_page, :page => params[:page]).order('date asc').group_by{ |s| [s.date, s.store_id, s.nomor] }
respond_to do |format|
format.html
end
end
And the index.html can be like this:
<% #totalsolds.each do |(date, store, nomor), totalsold| %>
<tr>
<td><%= date.strftime("%d/%m/%Y") %></td>
<td><%= nomor %></td>
<td><%= Store.find(store).name %></td>
<% totalsold.each do |ts| %>
<td><%= ts.qty == 0 || ts.qty == nil ? "-" :prod.qty %></td>
<% end %>
<td>Rp<%= number_to_currency(totalsold.sum(&:value), :unit => "") %></td>
<td><%= link_to "edit", edit_bt_path(:store_id => store, :date => date, :nomor => nomor), :class => "btn btn-primer" %></td>
</tr>
<% end %>
...
<div class="row">
<div class="col-sm-6">
<% line 65 %>
<%= page_entries_info #totalsolds %>
</div>
<div class="col-sm-6">
<%= will_paginate #totalsolds, :style => 'float:right;margin-top:-5px;height:30px;' %>
</div>
</div>