ruby on rails - Access parent attribute in independent nested model view -

i have nested resources

 resources :invoices   resources :payments  end 

the invoices model follows:

 class invoice < activerecord::base  belongs_to :customer, :inverse_of => :invoices attr_accessible :due_date, :invoice_date, :reading_ids, :customer_id, :customer, :status, :amount, :balance  has_many :invoice_items, :dependent => :destroy has_many :payments, :dependent => :destroy  end 

the payments model follows:

class payment < activerecord::base  attr_accessible :amount, :method, :payment_date, :reference_no, :invoice_id  belongs_to :invoice end 

the payments controller follows:

class paymentscontroller < applicationcontroller before_filter :authenticate_user!  def new     invoice = invoice.find(params[:invoice_id])     @payment = invoice.payments.build respond_to |format|   format.html #new.html.erb  end    end     end 

i have created view record new payments , display customer details (name in particular) in view, how go it?

payments view

<%= simple_form_for [@payment.invoice, @payment], :html => { :class => 'form-horizontal' } |f| %> <%= render "shared/error_messages", :target => @payment %>  <h5> invoice details </h5> <%= f.input :invoice_id,  disabled: true,  as: :string %> <%= f.input :method, as: :select, :collection => [['cash','cash'],['cheque','cheque'],['in-house transfer','in-house transfer'],['account ledger','account ledger']], :selected => ['cash','cash'] %>   <%= f.input :reference_no, as: :string %>   <%= f.input :payment_date, as: :string, input_html: { class: "datepicker" } %> <% end %> 

just use:

<%= @payment.invoice.customer.name %> 

anywhere in view.