Ruby on rails 传递多个具有嵌套属性和多态关联的图像

我正在尝试传递多个图像，这些图像具有嵌套属性和多态关联。但是得到这个错误

没有将符号隐式转换为整数

。虽然我知道我已经完成了所有的设置，但我不知道我遗漏了什么。我使用了

载波波

上传图像

User.rb

class User < ApplicationRecord  
  has_many :images,-> { where(object_type: 'User') },as: :object,:foreign_key => 'object_id'  ,dependent: :destroy
  accepts_nested_attributes_for :images 

  validates :first_name,presence: true
end

class Image < ApplicationRecord
  before_destroy :remember_id
  after_destroy :remove_id_directory

  mount_uploader :image, ImageUploader 
  belongs_to :object,polymorphic: true

  validates :name,presence: true

  protected

  def remember_id
    @id = id
  end

  def remove_id_directory
    FileUtils.remove_dir("#{Rails.root}/public/uploads/image/image/#{@id}", :force => true)
  end
end

class UsersController < ApplicationController
  def index
    @users = User.all
  end

  def new
    @user = User.new
    @user.images.build
  end

  def create
    @user = User.new 
     @user.images.build(user_params)
    if @user.save
      redirect_to users_path 
    else
      render :new
    end
  end

  def destroy
    @user = User.find(params[:id])
    @user.destroy
    redirect_to users_path
  end

  private

  def user_params
    params.require(:user).permit(:first_name,images_attributes: [:name,:image,:user_id ])
  end
end

<%= form_for @user,html: {multipart: :true} do |f| %>   
  <%= f.text_field :first_name %>

  <%= f.fields_for :images_attributes do |images_fields| %>
    Nama  : <%= images_fields.text_field :name %>
    Image: <%= images_fields.file_field :image,:multiple => true %>

  <% end %>
  <%=f.submit "Submit" %>
<% end %>

def create
    @user = User.new(user_params)  
    if @user.save
        params[:images_attributes]['image'].each do |a|

          @image_attachment = @user.images.create!(:image => a,:name=>  params[:images_attributes][:name].join)

       end

        redirect_to users_path

    else
      render :new
    end
  end

<%= form_for @user,html: {multipart: :true} do |f| %>

    <%= f.text_field :first_name %> 

    <%= f.fields_for :images do |images_fields| %>
    Name  : <%= images_fields.text_field :name,name: "images_attributes[name][]" %>
    Image: <%= images_fields.file_field :image,:multiple => true,name: "images_attributes[image][]" %>

    <% end %>
       <%=f.submit "Submit" %>

<% end %>

class用户{where（object_type:'User'）}，as:：object，：foreign_key=>'object_id'，dependent:：destroy
接受图像的\u嵌套\u属性\u
验证：名字，状态：true
结束

Image.rb

class User < ApplicationRecord  
  has_many :images,-> { where(object_type: 'User') },as: :object,:foreign_key => 'object_id'  ,dependent: :destroy
  accepts_nested_attributes_for :images 

  validates :first_name,presence: true
end

class Image < ApplicationRecord
  before_destroy :remember_id
  after_destroy :remove_id_directory

  mount_uploader :image, ImageUploader 
  belongs_to :object,polymorphic: true

  validates :name,presence: true

  protected

  def remember_id
    @id = id
  end

  def remove_id_directory
    FileUtils.remove_dir("#{Rails.root}/public/uploads/image/image/#{@id}", :force => true)
  end
end

class UsersController < ApplicationController
  def index
    @users = User.all
  end

  def new
    @user = User.new
    @user.images.build
  end

  def create
    @user = User.new 
     @user.images.build(user_params)
    if @user.save
      redirect_to users_path 
    else
      render :new
    end
  end

  def destroy
    @user = User.find(params[:id])
    @user.destroy
    redirect_to users_path
  end

  private

  def user_params
    params.require(:user).permit(:first_name,images_attributes: [:name,:image,:user_id ])
  end
end

<%= form_for @user,html: {multipart: :true} do |f| %>   
  <%= f.text_field :first_name %>

  <%= f.fields_for :images_attributes do |images_fields| %>
    Nama  : <%= images_fields.text_field :name %>
    Image: <%= images_fields.file_field :image,:multiple => true %>

  <% end %>
  <%=f.submit "Submit" %>
<% end %>

def create
    @user = User.new(user_params)  
    if @user.save
        params[:images_attributes]['image'].each do |a|

          @image_attachment = @user.images.create!(:image => a,:name=>  params[:images_attributes][:name].join)

       end

        redirect_to users_path

    else
      render :new
    end
  end

<%= form_for @user,html: {multipart: :true} do |f| %>

    <%= f.text_field :first_name %> 

    <%= f.fields_for :images do |images_fields| %>
    Name  : <%= images_fields.text_field :name,name: "images_attributes[name][]" %>
    Image: <%= images_fields.file_field :image,:multiple => true,name: "images_attributes[image][]" %>

    <% end %>
       <%=f.submit "Submit" %>

<% end %>

类映像true）
结束
结束

用户\u控制器.rb

class User < ApplicationRecord  
  has_many :images,-> { where(object_type: 'User') },as: :object,:foreign_key => 'object_id'  ,dependent: :destroy
  accepts_nested_attributes_for :images 

  validates :first_name,presence: true
end

class Image < ApplicationRecord
  before_destroy :remember_id
  after_destroy :remove_id_directory

  mount_uploader :image, ImageUploader 
  belongs_to :object,polymorphic: true

  validates :name,presence: true

  protected

  def remember_id
    @id = id
  end

  def remove_id_directory
    FileUtils.remove_dir("#{Rails.root}/public/uploads/image/image/#{@id}", :force => true)
  end
end

class UsersController < ApplicationController
  def index
    @users = User.all
  end

  def new
    @user = User.new
    @user.images.build
  end

  def create
    @user = User.new 
     @user.images.build(user_params)
    if @user.save
      redirect_to users_path 
    else
      render :new
    end
  end

  def destroy
    @user = User.find(params[:id])
    @user.destroy
    redirect_to users_path
  end

  private

  def user_params
    params.require(:user).permit(:first_name,images_attributes: [:name,:image,:user_id ])
  end
end

<%= form_for @user,html: {multipart: :true} do |f| %>   
  <%= f.text_field :first_name %>

  <%= f.fields_for :images_attributes do |images_fields| %>
    Nama  : <%= images_fields.text_field :name %>
    Image: <%= images_fields.file_field :image,:multiple => true %>

  <% end %>
  <%=f.submit "Submit" %>
<% end %>

def create
    @user = User.new(user_params)  
    if @user.save
        params[:images_attributes]['image'].each do |a|

          @image_attachment = @user.images.create!(:image => a,:name=>  params[:images_attributes][:name].join)

       end

        redirect_to users_path

    else
      render :new
    end
  end

<%= form_for @user,html: {multipart: :true} do |f| %>

    <%= f.text_field :first_name %> 

    <%= f.fields_for :images do |images_fields| %>
    Name  : <%= images_fields.text_field :name,name: "images_attributes[name][]" %>
    Image: <%= images_fields.file_field :image,:multiple => true,name: "images_attributes[image][]" %>

    <% end %>
       <%=f.submit "Submit" %>

<% end %>

class UsersController

users/new.html.erb

class User < ApplicationRecord  
  has_many :images,-> { where(object_type: 'User') },as: :object,:foreign_key => 'object_id'  ,dependent: :destroy
  accepts_nested_attributes_for :images 

  validates :first_name,presence: true
end

class Image < ApplicationRecord
  before_destroy :remember_id
  after_destroy :remove_id_directory

  mount_uploader :image, ImageUploader 
  belongs_to :object,polymorphic: true

  validates :name,presence: true

  protected

  def remember_id
    @id = id
  end

  def remove_id_directory
    FileUtils.remove_dir("#{Rails.root}/public/uploads/image/image/#{@id}", :force => true)
  end
end

class UsersController < ApplicationController
  def index
    @users = User.all
  end

  def new
    @user = User.new
    @user.images.build
  end

  def create
    @user = User.new 
     @user.images.build(user_params)
    if @user.save
      redirect_to users_path 
    else
      render :new
    end
  end

  def destroy
    @user = User.find(params[:id])
    @user.destroy
    redirect_to users_path
  end

  private

  def user_params
    params.require(:user).permit(:first_name,images_attributes: [:name,:image,:user_id ])
  end
end

<%= form_for @user,html: {multipart: :true} do |f| %>   
  <%= f.text_field :first_name %>

  <%= f.fields_for :images_attributes do |images_fields| %>
    Nama  : <%= images_fields.text_field :name %>
    Image: <%= images_fields.file_field :image,:multiple => true %>

  <% end %>
  <%=f.submit "Submit" %>
<% end %>

def create
    @user = User.new(user_params)  
    if @user.save
        params[:images_attributes]['image'].each do |a|

          @image_attachment = @user.images.create!(:image => a,:name=>  params[:images_attributes][:name].join)

       end

        redirect_to users_path

    else
      render :new
    end
  end

<%= form_for @user,html: {multipart: :true} do |f| %>

    <%= f.text_field :first_name %> 

    <%= f.fields_for :images do |images_fields| %>
    Name  : <%= images_fields.text_field :name,name: "images_attributes[name][]" %>
    Image: <%= images_fields.file_field :image,:multiple => true,name: "images_attributes[image][]" %>

    <% end %>
       <%=f.submit "Submit" %>

<% end %>

非农产品市场准入：
图像：真%>

日志

   Started POST "/users" for 127.0.0.1 at 2017-01-27 11:20:29 +0530
Processing by UsersController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"wpb1cqph+SAucEfeb0isx7DKtsV4PQeyq47xZbz/Ac7cSfoSleBXynNJiT+kNni5OaX/DqNhR+h1Xvli2QyBbg==", "user"=>{"first_name"=>"adasd", "images_attributes"=>{"0"=>{"name"=>"asdasd", "image"=>[#<ActionDispatch::Http::UploadedFile:0x00000003819838 @tempfile=#<Tempfile:/tmp/RackMultipart20170127-3305-16cl68l.png>, @original_filename="1.png", @content_type="image/png", @headers="Content-Disposition: form-data; name=\"user[images_attributes][0][image][]\"; filename=\"1.png\"\r\nContent-Type: image/png\r\n">, #<ActionDispatch::Http::UploadedFile:0x000000038197e8 @tempfile=#<Tempfile:/tmp/RackMultipart20170127-3305-8o6vn7.png>, @original_filename="27_dec.png", @content_type="image/png", @headers="Content-Disposition: form-data; name=\"user[images_attributes][0][image][]\"; filename=\"27_dec.png\"\r\nContent-Type: image/png\r\n">, #<ActionDispatch::Http::UploadedFile:0x000000038196a8 @tempfile=#<Tempfile:/tmp/RackMultipart20170127-3305-1j7hl1r.png>, @original_filename="Screenshot from 2017-01-13 16:52:49.png", @content_type="image/png", @headers="Content-Disposition: form-data; name=\"user[images_attributes][0][image][]\"; filename=\"Screenshot from 2017-01-13 16:52:49.png\"\r\nContent-Type: image/png\r\n">]}}}, "commit"=>"Submit"}
Unpermitted parameter: image
Completed 500 Internal Server Error in 4ms (ActiveRecord: 0.0ms)

2017年1月27日11:20:29+0530，127.0.0.1版开始发布“/用户” 由UsersController处理#创建为HTML 参数：{“utf8”=>“✓", "真实性令牌“=>”wpb1cqph+SAucEfeb0isx7DKtsV4PQeyq47xZbz/ac7csfoslebxynjit+kni5oax/DqNhR+h1Xvli2QyBbg==”，“用户”=>{“第一名”=>“adasd”，“图像属性”=>{“0”=>{“名称”=>“asdasd”，“图像”=>，[\35;、\ 35;、\ 35;、\ 35;]}}>，“提交”} 不允许的参数：图像 在4ms内完成500个内部服务器错误（ActiveRecord:0.0ms）

---

我找到了解决办法

用户\u控制器.rb

class User < ApplicationRecord  
  has_many :images,-> { where(object_type: 'User') },as: :object,:foreign_key => 'object_id'  ,dependent: :destroy
  accepts_nested_attributes_for :images 

  validates :first_name,presence: true
end

class Image < ApplicationRecord
  before_destroy :remember_id
  after_destroy :remove_id_directory

  mount_uploader :image, ImageUploader 
  belongs_to :object,polymorphic: true

  validates :name,presence: true

  protected

  def remember_id
    @id = id
  end

  def remove_id_directory
    FileUtils.remove_dir("#{Rails.root}/public/uploads/image/image/#{@id}", :force => true)
  end
end

class UsersController < ApplicationController
  def index
    @users = User.all
  end

  def new
    @user = User.new
    @user.images.build
  end

  def create
    @user = User.new 
     @user.images.build(user_params)
    if @user.save
      redirect_to users_path 
    else
      render :new
    end
  end

  def destroy
    @user = User.find(params[:id])
    @user.destroy
    redirect_to users_path
  end

  private

  def user_params
    params.require(:user).permit(:first_name,images_attributes: [:name,:image,:user_id ])
  end
end

<%= form_for @user,html: {multipart: :true} do |f| %>   
  <%= f.text_field :first_name %>

  <%= f.fields_for :images_attributes do |images_fields| %>
    Nama  : <%= images_fields.text_field :name %>
    Image: <%= images_fields.file_field :image,:multiple => true %>

  <% end %>
  <%=f.submit "Submit" %>
<% end %>

def create
    @user = User.new(user_params)  
    if @user.save
        params[:images_attributes]['image'].each do |a|

          @image_attachment = @user.images.create!(:image => a,:name=>  params[:images_attributes][:name].join)

       end

        redirect_to users_path

    else
      render :new
    end
  end

<%= form_for @user,html: {multipart: :true} do |f| %>

    <%= f.text_field :first_name %> 

    <%= f.fields_for :images do |images_fields| %>
    Name  : <%= images_fields.text_field :name,name: "images_attributes[name][]" %>
    Image: <%= images_fields.file_field :image,:multiple => true,name: "images_attributes[image][]" %>

    <% end %>
       <%=f.submit "Submit" %>

<% end %>

users/new.html.erb

class User < ApplicationRecord  
  has_many :images,-> { where(object_type: 'User') },as: :object,:foreign_key => 'object_id'  ,dependent: :destroy
  accepts_nested_attributes_for :images 

  validates :first_name,presence: true
end

class Image < ApplicationRecord
  before_destroy :remember_id
  after_destroy :remove_id_directory

  mount_uploader :image, ImageUploader 
  belongs_to :object,polymorphic: true

  validates :name,presence: true

  protected

  def remember_id
    @id = id
  end

  def remove_id_directory
    FileUtils.remove_dir("#{Rails.root}/public/uploads/image/image/#{@id}", :force => true)
  end
end

class UsersController < ApplicationController
  def index
    @users = User.all
  end

  def new
    @user = User.new
    @user.images.build
  end

  def create
    @user = User.new 
     @user.images.build(user_params)
    if @user.save
      redirect_to users_path 
    else
      render :new
    end
  end

  def destroy
    @user = User.find(params[:id])
    @user.destroy
    redirect_to users_path
  end

  private

  def user_params
    params.require(:user).permit(:first_name,images_attributes: [:name,:image,:user_id ])
  end
end

<%= form_for @user,html: {multipart: :true} do |f| %>   
  <%= f.text_field :first_name %>

  <%= f.fields_for :images_attributes do |images_fields| %>
    Nama  : <%= images_fields.text_field :name %>
    Image: <%= images_fields.file_field :image,:multiple => true %>

  <% end %>
  <%=f.submit "Submit" %>
<% end %>

def create
    @user = User.new(user_params)  
    if @user.save
        params[:images_attributes]['image'].each do |a|

          @image_attachment = @user.images.create!(:image => a,:name=>  params[:images_attributes][:name].join)

       end

        redirect_to users_path

    else
      render :new
    end
  end

<%= form_for @user,html: {multipart: :true} do |f| %>

    <%= f.text_field :first_name %> 

    <%= f.fields_for :images do |images_fields| %>
    Name  : <%= images_fields.text_field :name,name: "images_attributes[name][]" %>
    Image: <%= images_fields.file_field :image,:multiple => true,name: "images_attributes[image][]" %>

    <% end %>
       <%=f.submit "Submit" %>

<% end %>

姓名：
Image:true，name:“images\u attributes[Image][]”%>

Hi。如果您查看日志（在控制台窗口或

log/development.log

中），找到与该错误消息匹配的stacktrace并将其复制/粘贴到您的问题中，我们将帮助您。这将帮助我们找出哪一行（不仅在您的代码中，而且在carrierwave中）是导致该错误的原因。但只是一个快速的哑炮也告诉我，这可能不太正确：

f.fields\u for:images\u attributes

它应该是：

f.fields\u for:images

（在表单中。在permit/require-else中使用

images\u attributes

）好的，我向你展示我的开发。logTaryn East-它不起作用，我尝试与f.fields_合作：images@AniketShivamTiwari：请告诉我错误。别忘了在属性

images\u属性中添加id:[：id，：name，：image，：user\u id]