Ruby on rails RubyonRails为未写入模型的属性形成_，即使这些属性有效

我正在创建一个简单的注册表单，但是我的rspec验证失败了

 (states: "Failure/Error: expect { click_button submit }.to change(User, :count).by(1)
   count should have been changed by 1, but was changed by 0") 

当我提交一份有效的表格时。我得到一个错误，我的名字字段不能为空，但是，他们不是。无法保存的参数明显存在，并且存在于my params变量中。我完全不知道这个问题是什么

注册页面：

<h1>Sign up</h1>

<div class="row">
  <div class="span6 offset3">
    <%= form_for(@user) do |f| %>
      <%= render 'shared/error_messages' %>
      <%= f.label :first_name %>
      <%= f.text_field :first_name %>

      <%= f.label :last_name %>
      <%= f.text_field :last_name %>

      <%= f.label :email %>
      <%= f.text_field :email %>

      <%= f.label :password %>
      <%= f.password_field :password %>

      <%= f.label :password_confirmation, "Confirmation" %>
      <%= f.password_field :password_confirmation %>

      <%= f.submit "Create my account", class: "btn btn-large btn-primary" %>
    <% end %>
  </div>

HTML

---

看起来您缺少强参数。Ruby on Rails指南中有一个描述：

在控制器的

create

操作中，将

@user=user.new（user\u-params）

更改为类似

@user=user.new（profile\u-params）

的内容，并定义私有

profile\u-params

方法：

def profile_params
  params.require(:user).permit(:first_name, :last_name, :email, :password, :password_confirmation)
end

---

这将允许控制器实际将参数值传递给要创建的用户的模型。

在用户模型中，“name”的字段是“first_name”、“last_name”或仅仅是“name”？我有强参数，但其中包含的字段不正确，这就是无法识别它们的原因。谢谢

<div class="row">
  <div class="span6 offset3">
    <form accept-charset="UTF-8" action="/users" class="new_user" id="new_user" method="post">
      <div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="&#x2713;" />
        <input name="authenticity_token" type="hidden" value="HOESbh8pxffYQlmMDYOFm/fBWt1OXOz3CZ4mdgiXMUM=" />
      </div>
      <div id="error_explanation">
        <div class="alert alert-error">
          The form contains 4 errors.
        </div>
        <ul>
          <li>* First name can&#39;t be blank</li>
          <li>* First name is too short (minimum is 2 characters)</li>
          <li>* Last name can&#39;t be blank</li>
          <li>* Last name is too short (minimum is 2 characters)</li>
        </ul>
      </div>

      <div class="field_with_errors"><label for="user_first_name">First name</label></div>
        <div class="field_with_errors"><input id="user_first_name" name="user[first_name]" type="text" /></div>

        <div class="field_with_errors"><label for="user_last_name">Last name</label></div>
        <div class="field_with_errors"><input id="user_last_name" name="user[last_name]" type="text" /></div>

        <label for="user_email">Email</label>
        <input id="user_email" name="user[email]" type="text" value="baz@uitest.com" />

        <label for="user_password">Password</label>
        <input id="user_password" name="user[password]" type="password" />

        <label for="user_password_confirmation">Confirmation</label>
        <input id="user_password_confirmation" name="user[password_confirmation]" type="password" />

        <input class="btn btn-large btn-primary" name="commit" type="submit" value="Create my account" />
    </form>    
  </div>
</div>

--- !ruby/hash:ActionController::Parameters
utf8: ✓
authenticity_token: HOESbh8pxffYQlmMDYOFm/fBWt1OXOz3CZ4mdgiXMUM=
user: !ruby/hash:ActionController::Parameters
  first_name: First name test
  last_name: Last name test
  email: baz@uitest.com
  password: foobar
  password_confirmation: foobar
commit: Create my account
action: create
controller: users

def profile_params
  params.require(:user).permit(:first_name, :last_name, :email, :password, :password_confirmation)
end