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试图在我的 Rails 站点中向 Venmo 发出 Post Request 以进行付款处理。

这是我在 index.html.erb 中的表格：

<!-- Venmo box -->
                    <div class="box box-warning">
                        <div class="box-header">
                            <%= form_tag make_payment_path do %>
                            <%= hidden_field_tag "access_token", @access_token %>
                          <h3 class="box-title">Pay Bill using Venmo Account</h3>
                            <div id="payment_note_input">
                            <%= text_field_tag "payment_note", nil, class:"form-control", placeholder: "add a note to your payment" %>
                            </div>
                            <div id="payment_target_input">
                                <%= text_field_tag "payment_target", nil, class:"form-control", placeholder: "pay an email address" %>
                            </div>
                            <div id="payment_amount_input">
                                <%= text_field_tag "payment_amount", nil, class:"form-control", placeholder: "enter the payment amount!"%>
                            </div>
                                </br>
                        <%= submit_tag "Make payment", class: "btn btn-danger" %>
                        <% end %>
                    </div>

这是我在控制器中的 make_payment_path 方法中的内容：

def index
if !params[:access_token].nil?
    flash[:success] = "Venmo successfully authenticated!"
end
end

def make_payment_path
if !params[:access_token].nil?

    uri = URI.parse("https://api.venmo.com/v1/payments")
    http = Net::HTTP.new(uri.host, uri.port)
    request = Net::HTTP::Post.new(uri.request_uri)
    request.set_form_data({"access_token" => params[:access_token], "email" => params[:payment_target],
     "amount" => params[:payment_amount], "note" => params[:payment_note]} )

    response = http.request(request)
 end
end

helper_method :make_payment_path

我不断收到这篇文章标题中的错误：“Net::HTTPBadRequest:Class 的未定义方法 `model_name'”

我似乎找不到与此错误类似的任何其他结果。它在 Ruby 文档中作为 308 Permanent Redirect - 在草稿中出现。有人可以在这里帮忙吗？

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