我对ruby和rails很新,我在使用carrierwave_direct上传时遇到了一些问题。我使用carrierwave_direct上传了Ryan Bates的Railscast 383。但是,他提供的解决方案似乎并不适合我。我有一个使用Devise创建的User模型,我有一个上传器来处理我的上传。我正在尝试使用上传器上传视频文件,我计划稍后使用带有AWS API的Elastic Transoder进行转码。这些文件正好上传到s3,但似乎它们没有与我的数据库中的记录相关联。文件在我提交后立即上传,但我需要一种方法来创建它们以及标题,描述,以后可能还有其他参数。我的if-else语句也总是重定向到我的else语句。我想我的问题在于我的控制器;我的路线和观点似乎工作得很好,我只是坚持这个问题。
进一步澄清:我需要用户能够上传视频,然后让用户输入标题,描述等,然后重定向到另一个页面。然后,我需要能够在以后显示该文件。
这是我的UploadsController:
class UploadsController < ApplicationController
before_action :authenticate_user!, only: [:create, :destroy]
before_action :current_user, only: :destroy
def index
@uploader = Upload.new.video
@uploader.success_action_redirect = new_uploads_url
end
def show
@upload = Upload.find(params[:id])
end
def new
@upload = Upload.new(key: params[:key])
end
def create
@upload = Upload.new(upload_params)
if @upload.save
redirect_to home_index_path
return
else
redirect_to uploads_index_path
end
end
def edit
end
def destroy
@upload = Upload.find(params[:id])
@upload.destroy
flash[:notice] = "Upload deleted"
redirect_to request.referrer || root_url
end
def upload_params
params.require(:upload).permit(:video, :title, :description)
end
end
这是我的上传模型:
class Upload < ActiveRecord::Base
belongs_to :user
default_scope -> { order(created_at: :desc) }
validates :user_id, presence: true
validates :description, presence: true
validates :title, presence: true, length: {maximum: 100}
validates :description, presence: true
validates :video, presence: true
mount_uploader :video, VideoUploader
after_save :enqueue_video
def enqueue_video
VideoWorker.perform_async(id, key) if key.present?
end
class VideoWorker
include Sidekiq::Worker
def perform(id, key)
upload = Upload.find(id)
upload.key = key
video.remote_video_url = upload.video.direct_fog_url(with_path: true)
upload.save!
end
end
end
我的路线:
Rails.application.routes.draw do
get '/home/index'
root 'home#index'
devise_for :users
get 'users/:id' => 'users#show'
resources :uploads
get '/index' => 'uploads#index'
end
编辑以下是我的UsersController和用户显示页面:
控制器: class UsersController&lt; ApplicationController中
def show
@user = User.find(params[:id])
end
end
显示:
<h1><%= @user.username %></h1>
<h3>Title:</h3>
<%= @upload.title %>
答案 0 :(得分:0)
问题是你在做什么:
def create
@upload = Upload.new(upload_params)
# [..]
end
def upload_params
params.require(:upload).permit(:video, :title, :description)
end
您的Upload
与User
相关联:
class Upload < ActiveRecord::Base
belongs_to :user
validates :user_id, presence: true
# [..]
end
那么Rails如何知道哪个Upload
属于哪个User
?你从来没有告诉过Upload
任何事情&#39;不是User
!
如果您总是想使用当前登录的用户,您可能会执行以下操作:
def create
@upload = Upload.new(upload_params)
@upload.user = current_user
# [...]
end
当然,这假设current_user
是获取当前登录用户的正确方法(通常是这样)。
如果您希望能够将其与任何其他用户相关联,则需要在其中添加user_id
字段并将其添加到upload_params
。