ruby-on-rails – Rails 4错误：无法写入未知属性`html’

尝试为学习目的设置基本的Rails 4应用程序时遇到错误,所以请耐心等待！我正在尝试创建一个应用程序来创建和显示自定义Web表单.我有一个Form模型,它有很多字段.我正在尝试让视图正常工作,这将允许我创建一个附加到特定表单的新Field记录：

class Form < ActiveRecord::Base    
    has_many :fields    
end

class Field < ActiveRecord::Base
    belongs_to :form
end

在我的Field索引视图中,我认为我已经设置为正确显示特定表单的字段(通过类似/ forms / 1 / fields的URL),我有一个链接：

<%= link_to 'New Field',new_form_field_path(@form) %>

fields / new.html.erb文件包含：

<h1>New field</h1>
<%= render :partial => 'form',:form => @form,:field => @field %>

字段/ _form.html.erb的开头如下：

<%= form_for(@form,@field) do |f| %>

fields_controller.rb定义了此方法：

def new
  @form = Form.find(params[:form_id]) #unsure if this is necessary/correct,but its presence doesn't effect the error i'm getting
  @field = Field.new
end

已创建ID为1的表单.它看起来好像是/ forms / 1 / fields.但是,当我单击“新建字段”链接,它将我带到/ forms / 1 / fields / new时,我收到此错误：

Showing /home/moskie/Projects/FormBuilder/app/views/fields/_form.html.erb where line #1 raised:

can't write unknown attribute `html'
Extracted source (around line #1):

  <%= form_for(@form,@field) do |f| %>
    <% if @field.errors.any? %>
      <div id="error_explanation">
        <h2><%= pluralize(@field.errors.count,"error") %> prohibited this field from being saved:</h2>

Trace of template inclusion: app/views/fields/new.html.erb

Rails.root: /home/moskie/Projects/FormBuilder

Application Trace | Framework Trace | Full Trace
app/views/fields/_form.html.erb:1:in `_app_views_fields__form_html_erb___1866877160086017450_70350628427620'
app/views/fields/new.html.erb:3:in `_app_views_fields_new_html_erb___1515443138224133845_70350627074400'
Request

Parameters:

{"form_id"=>"1"}

我对此错误告诉我的内容感到非常困惑,所以我无法弄清楚我在这里做错了什么.谁能帮我吗？谢谢.

<%= form_for [@form,@field] do |f| %>