Login 使用Mechanize和Nokogiri登录网站？

我在使用我们的一个服务提供商的登录表单时遇到一些困难。其他网站运行良好，但由于某些原因，我无法通过他们的登录表单

的网站登录如下所示：

<form accept-charset="UTF-8" action="/sessions" class="new_user_session" id="new_user_session" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="&#x2713;" /><input name="authenticity_token" type="hidden" value="kaLEkPesQfeheronzGTdfnVAzpuUiC+VmjVXBu540n8=" /></div>

      <fieldset class="big">

      <div class="form-row">
        <div class="form-label">
        <label for="user_session_email">Email</label>
        </div>
        <div class="form-field">
        <input id="user_session_email" name="user_session[email]" size="30" type="text" />

        </div>

      </div>          

      <div class="form-row">
        <div class="form-label">
        <label for="user_session_password">Password</label>
        </div>
        <div class="form-field">
        <input id="user_session_password" name="user_session[password]" size="30" type="password" />

        </div>

        <div class="form-comment"><p><a href="/password_resets/new" class="link-password-recovery">Forgot your password?</a></p></div>
      </div>

        <div class="form-row optional">
          <div class="form-field">
            <label for="user_session_remember_me"><input name="user_session[remember_me]" type="hidden" value="0" /><input id="user_session_remember_me" name="user_session[remember_me]" type="checkbox" value="1" /> Remember me for 2 weeks</label>
          </div>

        </div>

</fieldset>  

我还尝试了其他SO中建议的不同登录方式：

使用这种身份验证方法，我在运行rake任务时获得以下输出：

undefined method `email' for [hidden:0x3fef2ab2b994 type: hidden name: utf8 value: ✓]:Mechanize::Form::Hidden

仔细检查后，上述错误似乎是由于表单启动后立即有一个字段：

<form accept-charset="UTF-8" action="/sessions" class="new_user_session" id="new_user_session" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="&#x2713;" /><input name="authenticity_token" type="hidden" value="kaLEkPesQfeheronzGTdfnVAzpuUiC+VmjVXBu540n8=" /></div>

我错过什么了吗？如果是，什么？任何指点都很感激

试试换衣服

form.field_with(:email => "user_session_email").value = email
form.field_with(:password => "user_session_password").value = password

到

<form accept-charset="UTF-8" action="/sessions" class="new_user_session" id="new_user_session" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="&#x2713;" /><input name="authenticity_token" type="hidden" value="kaLEkPesQfeheronzGTdfnVAzpuUiC+VmjVXBu540n8=" /></div>

form.field_with(:email => "user_session_email").value = email
form.field_with(:password => "user_session_password").value = password

form.field_with(:name => "user_session[email]").value = email
form.field_with(:name => "user_session[password]").value = password