Question

我有一个带有post和place.的嵌套表单我想在提交时将两个数据条目都放入数据库中。我在名为post_id的地方表中有一个外键。我如何将它们与提交相关联，就像帖子的外键会给出帖子ID一样，所有内容都会被提交post和place ??谢谢!!!

帖子控制器：

class PostsController < ApplicationController

before_action :authenticate_user!, :except => [:show, :index, :new]

before_action :set_post, only: [:show, :edit, :update, :destroy]

before_action :owned_post, only: [:edit, :update, :destroy]  

  def index
    @post = Post.new
    @posts = Post.all
  end

  def show

    @post = Post.find(params[:id])
  end

  def new

    @post = current_user.posts.new
    @post.places = Place.new


  end

  def create

    @post = current_user.posts.create(post_params)



    if @post.save
      flash[:success] = "Your post has been created!"
      redirect_to root_path
    else
      flash[:alert] = "Your new post couldn't be created!  Please check the form."
      render :new
    end
  end

  def find
    @place = Place.new
  end

  def edit
    @place = @post.place;
  end

  def update
     if @post.update(post_params)
      flash[:success] = "Post updated."
      redirect_to root_path
    else
      flash.now[:alert] = "Update failed.  Please check the form."
      render :edit
    end
  end

  def destroy
    @post.destroy

    flash[:success] = "Your Post has been removed."
    redirect_to root_path
  end

  private



  def post_params
    params.require(:post).permit(:place_id, :image, :caption, :places_attributes => [:id, :post_id, :city, :country, :address, :streetnumber, :street, :state])

  end

  def place_params
    params.require(:place).permit(:country, :city)
  end




  def set_post
    @post = Post.find(params[:id])
  end

  def owned_post  
  unless current_user == @post.user
    flash[:alert] = "That post doesn't belong to you!"
    redirect_to root_path
  end
end  

end

表单-home.html：

<%= simple_form_for @post, html: { multipart: true } do |f| %>
        <div class="row">
          <div class="col-md-12">
            <%= f.error_notification %>
          </div>
        </div>
        <div class="container-fluid">
          <div class="dont">
            <h4>Upload an image (this is required):</h4>
            <%= f.input :image, label: false, input_html: { onChange: 'loadFile(event)' } %>
          </div>
          <%= f.simple_fields_for :places do |o| %>
          <div class="dont">
            <%= o.input :address, label: false, placeholder: "search", class: 'controls',:input_html =>{:id => 'pac-input'} %>
           <input id="latitude" name="latitude" value=" @#{latitude} "  type="text">
           <input id="longitude" name="longitude" value=" @#{longitude} " type="text">
           <input id="action" name="action" value"test" type="hidden">
           <%= o.input :streetnumber, label: false, class: 'controls',:input_html =>{:id => 'streetnumber'},:as => :hidden %>
           <%= o.input :street, label: false, class: 'controls',:input_html =>{:id => 'street'}, :as => :hidden %>
           <%= o.input :city, label: false, class: 'controls',:input_html =>{:id => 'city'}, :as => :hidden %>
           <%= o.input :state, label: false, class: 'controls',:input_html =>{:id => 'state'}, :as => :hidden %>
           <%= o.input :country, label: false, class: 'controls',:input_html =>{:id => 'country'}, :as => :text, :as => :hidden %>
          </div>
          <% end %>
          
          <div class="dont">
            <%= f.input :caption, label: false, placeholder: 'Add your caption' %>
          </div>
          <div class="dont">
            <%= f.button :submit, class: 'btn-success btn-block' %>
          </div>
        </div>
        <% end %>

错误报告：

` 在2016-05-11 20:14:53 +0900开始发布“/ posts”for :: 1 由PostsController处理#create as HTML 参数：{“utf8”=＆gt;“✓”，“authenticity_token”=＆gt;“cJP0UGjMFD244w2D4DqLC + VV86wO / i + ScOxbKUowMKSxx9JnwOQ77EFeyLAZY1E3 / YSQnOOZ2nIbu / Dc9mok6w ==”，“post”=＆gt; {“image”=＆gt;＃， @ original_filename =“IMG_0645.JPG”，@ content_type =“image / jpeg”，@ headers =“Content-Disposition：form-data; name = \”post [image] \“; filename = \”IMG_0645.JPG \“ \ r \ nContent-Type：image / jpeg \ r \ n“＆gt;，”places“=＆gt; {”address“=＆gt;”未命名的道路，Mokro，波斯尼亚和黑塞哥维那“，”streetnumber“=＆gt;”undefined“ “，”街道“=＆gt;”未命名道路“，”城市“=＆gt;”Mokro“，”州“=＆gt;”斯普斯卡共和国“，”国家“=＆gt;”波斯尼亚和黑塞哥维那“}，”标题“ =＆gt;“”}，“latitude”=＆gt;“43.88522775121559”，“经度”=＆gt;“18.6328125”，“提交”=＆gt;“创建帖子”} 用户负载（0.1ms）SELECT“users”。* FROM“users”WHERE“users”。“id”=？ ORDER BY“users”。“id”ASC LIMIT 1 [[“id”，16]] 未允许的参数：地点（0.0ms）开始交易 Command :: file -b --mime'/var/folders/tb/nnp8bs4x34b4ylvjsgq5g0400000gn/T/6b1516dec860140f099ec2a5d5cbbd6320160511-94657-1fkkpgg.JPG' Command :: identify -format'％wx％h，％[exif：orientation]''/ var / folder / tb / nnp8bs4x34b4ylvjsgq5g0400000gn / T / 6b1516dec860140f099ec2a5d5cbbd6320160511-94657-noib0w.JPG [0]'2＆gt; / dev / null Command :: identify -format％m'/ var / folder / tb / nnp8bs4x34b4ylvjsgq5g0400000gn / T / 6b1516dec860140f099ec2a5d5cbbd6320160511-94657-noib0w.JPG [0]' 命令::转换 '/var/folders/tb/nnp8bs4x34b4ylvjsgq5g0400000gn/T/6b1516dec860140f099ec2a5d5cbbd6320160511-94657-noib0w.JPG[0]' - 自动定向调整大小 “640”“的/ var /文件夹/ TB / nnp8bs4x34b4ylvjsgq5g0400000gn / T / 74ec5b80c34294faf295a1917f07ae9720160511- 94657-1rtm7lc” Command :: file -b --mime'/var/folders/tb/nnp8bs4x34b4ylvjsgq5g0400000gn/T/6b1516dec860140f099ec2a5d5cbbd6320160511-94657-1rirdao.JPG'

`

谢谢！

Answer 1

在你的PostController新方法中添加

 @post = current_user.posts.new
 @places = @post.places.build

在你的Post模型中添加

accepts_nested_attributes_for :places

PostsController中的NoMethodError＃创建“创建嵌套表单多表”

1 个答案: