how to create a pie chart in MVC

I am working on creating a pie chart the reflects my table. I'm coding in ruby on rails. Please any help or advice Inside my dashboard/index.html.erb The pie chart I'm trying to display is below: <%= pie_chart @dashboard_broker.group(:company_id ).order(actual_amount: :desc).limit(5).sum(actual_amount) %>

Below is the table code that works and Im trying to display on the company name and actual amount: <% @dashboard_broker.each do |db| %> <tr> <td><%= db.deal.description %></td> <td><%= link_to "Details", controller: "deals", action: "show", id: db.id %></td> <td><%= db.deal.company.name %></td> <td><%= db.percentage %></td> <td><%= number_to_currency(db.expected_amount) %></td> <td><%= number_to_currency(db.calculate_actual_amount) %></td> <td><%= db.broker.broker_full_name %></td> </tr> <% end %>

Below is my dashboard_controller def index @dashboard_commission = Commission.all @dashboard_sub_renewal = Subscription.where("enrollment_date between ? and ?", Date.today - 12.months, Date.today - 9.months).order(:enrollment_date).first(15) @dashboard_contact = Contact.all

@dashboard_broker = Commission.where('broker_id == ?', current_user)
@current_client = Company.where('broker_id == ?', current_user)
@current_deal = Deal.where('broker_id == ?', current_user)

end