Question

这似乎是一个常见的错误，我读了很多回复。我一定是想念一些傻瓜。

我有一个位置的活动。（HAS_ONE）。我设置了accepts_nested_attributes_for：location，我相信我有单数/复数（所有单数，它是一个has_one关系）。（我已经尝试单独列出每个属性的attr_accessible，没有骰子。）我已经重新启动了我的服务器。然而，我一直在：

无法批量分配受保护的属性：address，location_name， phone_number，区，邮编，城市，国家，拉特，

class Activity < ActiveRecord::Base
  attr_accessible :beer, :user, :whatdoing, :where, :with, :location_id, :location_attributes

  has_one :location, :dependent => :destroy

  accepts_nested_attributes_for :location


  validates :whatdoing, :numericality => { :only_integer => true, :greater_than => -1}
end


class Location < ActiveRecord::Base
  validates_presence_of :address

  belongs_to :activity

end

活动控制器：

# GET /activities/new.json
  def new
    @activity = Activity.new

    @activity.build_location

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @activity }
    end
  end

  # PUT /activities/1
  # PUT /activities/1.json
  def update
    @activity = Activity.find(params[:id])


    respond_to do |format|
      if @activity.update_attributes(params[:activity])
        format.html { redirect_to @activity, notice: 'Activity was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render action: "edit" }
        format.json { render json: @activity.errors, status: :unprocessable_entity }
      end
    end
  end

它必须是简单的东西，但我无法发现它。

提前致谢！

添加相关的表单代码：

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

      <ul>
      <% @activity.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= activity_form.label :whatdoing, "Thinkin" %>
    <%= activity_form.radio_button :whatdoing, 0 %>
    <%= activity_form.label :whatdoing, "Drinkin" %>
    <%= activity_form.radio_button :whatdoing, 1 %>
  </div>
  <div class="field">
    <%= activity_form.label :beer %>
    <%= activity_form.text_field :beer %>
  </div>
  <div class="field">
    <%= activity_form.label :where %>
    <%= activity_form.text_field :where %>
  </div>
  <div class="field">
    <%= activity_form.label :with %>
    <%= activity_form.text_field :with %>
  </div>

<%= activity_form.fields_for :location do |location_fields| %>
<div class="field search">
    <%= label_tag :search %>
    <%= text_field_tag :location_search, nil, :size => 60, :type => "search" %>
  </div>

  <br />

  <div class="field">
    <%= location_fields.label :address, "Full Address" %>
    <%= location_fields.text_field :address, :size => 60 %>
  </div>

  <div class="field">
    <%= location_fields.label :location_name %>
    <%= location_fields.text_field :location_name, :size => 18 %>

    <%= location_fields.label :phone_number %> 
    <%= location_fields.text_field :phone_number, :size => 18 %>
  </div>

  <div class="field">
    <%= location_fields.label :district %>
    <%= location_fields.text_field :district, :size => 18 %>
    <%= location_fields.label :postcode %>
    <%= location_fields.text_field :postcode, :size => 6, :type => 'number' %>
  </div>

  <div class="field">
    <%= location_fields.label :city %>
    <%= location_fields.text_field :city, :size => 18 %>

    <%= location_fields.label :country %> 
    <%= location_fields.text_field :country, :size => 18 %>
  </div>

  <div class="field">
    <%= location_fields.label :lat %>
    <%= location_fields.text_field :lat, :size=> 18 %>
    <%= location_fields.label :lng %>
    <%= location_fields.text_field :lng, :size=> 18 %>
  </div>
<% end %>

  <%= render :partial => "googlemap" %>


  <div class="actions">
    <%= activity_form.submit %>
  </div>

<% end %>

Answer 1

没有看到带有嵌套字段的表单，从错误看起来你可能已经省略了fields_for循环的位置 - 它应该看起来像

<%= f.fields_for :location do |f| %>
    <%= render :partial => "locations/form", :locals => {:f => f} %>
<% end -%>

这应该加载嵌套字段的表单，并确保您没有尝试为活动上的位置设置属性。

Answer 2

在Rails 3及更高版本中，您需要attr_writer或attr_accessor，attr_accessible用于批量分配属性

您必须为这些属性创建一些写权限

地址，location_name，phone_number，区，邮编，城市，国家，拉特，

Answer 3

结果我错过了所有属性的位置模型上的attr_accessible。添加它们，一切都很好。

rails：无法批量分配受保护的属性

3 个答案: