payments_controller.rb

  def create
    @payment = Payment.new(payment_params)

    respond_to do |format|
      if @payment.save
        result = CreateInvoiceService.new({payment_id: @payment.id}).charge
        if result == "pending"
          format.html { redirect_to @payment, notice: 'Payment was successfully created and Invoice is pending.' }
          format.json { render :show, status: :created, location: @payment }
        else
          format.html { redirect_to @payment, notice: 'Payment was successfully created and Invoice is issued.' }
          format.json { render :show, status: :created, location: @payment }
        end
      else
        format.html { render :new }
        format.json { render json: @payment.errors, status: :unprocessable_entity }
      end
    end
  end