Question

我正在尝试创建一个应用来制作属于许多用户的相册，并且用户拥有多个相册。但是，每当我尝试创建相册时，我的@ user.album.count似乎都没有改变。

album / new.html.erb

<%= form_for (@album), url: user_albums_path, :html => { :id => "uploadform", :multipart => true } do |f| %>
<div>
    <%= f.label :name %>
    <%= f.text_field :name %>


    <%= f.label :description %>
    <%= f.text_area :description %>

    <br>

    <%=f.submit %>
</div>
<% end %>

专辑控制器

class AlbumsController < ApplicationController

    def index
      @user = User.find(params[:user_id])
      @albums = @user.albums.all

      respond_to do |format|
        format.html
        format.json { render json: @albums }
      end
    end

    def show
      @albums = Album.all
      @album = Album.find(params[:id])
      @photo = Photo.new
    end

    def update
    end

    def edit
    end

    def create
      @user = User.find(params[:user_id])
      @album = @user.albums.build(params[:album])
      respond_to do |format|
        if @album.save
          format.html { redirect_to user_path(@user), notice: 'Album was successfully created.' }
          format.json { render json: @album, status: :created, location: @album}
        else
          format.html { render action: "new" }
          format.json { render json: @album.errors, status: :unprocessable_entity }
        end
      end 
    end

    def new
      @user = User.find(params[:user_id])
      @album = Album.new
    end

    def destroy
    end

end

模型

#album model
class Album < ActiveRecord::Base
  attr_accessible :avatar, :name, :description
  has_many :user_albums
  has_many :users, :through => :user_albums
  has_many :photos
end


#user model
class User < ActiveRecord::Base

  has_secure_password
  attr_accessible :email, :name, :password, :password_confirmation
  validates_presence_of :password, :on => :create

  validates_format_of :name, :with => /[A-Za-z]+/, :on => :create
  validates_format_of :email, :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/i, :on => :create
  validates_length_of :password, :minimum => 5, :on => :create

  has_many :user_albums
  has_many :albums, :through => :user_albums
  accepts_nested_attributes_for :albums

end

  #photo model (not up to there yet)
  class Photo < ActiveRecord::Base
    belongs_to :album
  end

配置/路由

Pholder::Application.routes.draw do
resources :users do
  resources :albums 
end

resources :albums do
  resources :photos
end

root :to => "users#index"

这是我的控制台

在2012-10-01 17:41:59 -0400开始获取127.0.0.1的“/assets/application.js?body=1” 服务资产/application.js - 304未修改（0ms） [2012-10-01 17:41:59]警告无法确定响应正文的内容长度。设置响应的内容长度或设置Response＃chunked = true

在2012-10-01 17:42:11 -0400开始发布“/ users / 13 / albums”for 127.0.0.1 由AlbumsController处理#create as HTML 参数：{“utf8”=＆gt;“✓”，“authenticity_token”=＆gt;“ttqQnEt1KFuwvYRU6MuOLgc5UprSE / zMzGMuzzZiZiE =”，“album”=＆gt; {“name”=＆gt;“fdsafds”，“description”=＆gt;“ fdafdsfafdsfadsfsdsa“}，”commit“=＆gt;”创建专辑“，”user_id“=＆gt;”13“} 用户负载（0.1ms）SELECT“users”。* FROM“users”WHERE“users”。“id”=？限制1 [[“id”，“13”]] （0.0ms）开始交易 SQL（0.3ms）INSERT INTO“albums”（“created_at”，“description”，“name”，“updated_at”）VALUES（？，？，？，？）[[“created_at”，Mon，01 Oct 2012 21： 42:11 UTC +00：00]，[“description”，“fdafdsfafdsfadsfsdsa”]，[“name”，“fdsafds”]，[“updated_at”，星期一，01十月2012 21:42:11 UTC +00：00 ]] （5.6ms）提交事务重定向到http://localhost:3000/users/13 完成302发现在9ms（ActiveRecord：6.0ms）

Answer 1

好的，我发现了问题。当您使用构建方法

通过用户创建相册时

@album = @user.albums.build(params[:album])

然后是你必须保存的用户，

@user.save

所以你的新创建方法是

def create
  @user = User.find(params[:user_id])
  @album = @user.albums.build(params[:album])
  respond_to do |format|
    if @user.save
      print @album.errors
      format.html { redirect_to user_path(@user), notice: 'Album was successfully created.' }
      format.json { render json: @album, status: :created, location: @album}
    else
      format.html { render action: "new" }
      format.json { render json: @album.errors, status: :unprocessable_entity }
    end
  end
end

Rails：表单提交没有正确创建属性？

1 个答案: