Question

我一直在努力弄清楚如何使用YT Gem上传缩略图。有谁知道如何帮忙？这是我正在关注的原始教程，但它没有谈论自定义缩略图。 [https://www.sitepoint.com/youtube-api-version-3-rails/][1] 我可以上传视频而不是自定义缩略图。

非常感谢您的帮助..

视频上传模型

class VideoUpload < ActiveType::Object
  attribute :file, :varchar
  attribute :title, :varchar
  attribute :description, :text
  attribute :upload_thumbnail, :varchar

  validates :file, presence: true
  validates :title, presence: true
  validates :upload_thumbnail, presence: true

  def upload!(user)
    account = Yt::Account.new access_token: user.token
    account.upload_video self.file, title: self.title, description: self.description, upload_thumbnail: self.upload_thumbnail
  end
end

VideoUploadController

def create
  @video_upload = VideoUpload.new(
    title: params[:video_upload][:title],
    description: params[:video_upload][:description], 
    upload_thumbnail: params[:video_upload][:upload_thumbnail],
    file: params[:video_upload][:file].try(:tempfile).try(:to_path)
  )

  if @video_upload.save
    uploaded_video = @video_upload.upload!(current_user)

    if uploaded_video.failed?
      flash[:error] = 'There was an error while uploading your video...'
    else
      Video.create({
        link: "https://www.youtube.com/watch?v=#{uploaded_video.id}",
        uid: uploaded_video.id,
        title: uploaded_video.title,
        description: uploaded_video.description
      })

      flash[:success] = 'Your video has been uploaded!'
    end

    redirect_to root_url
  else
    render :new
  end
end

查看

<%= form_for @video_upload do |f| %>
  <%= render 'shared/errors', object: @video_upload %>

  <div class="form-group">
    <%= f.label :file %>
    <%= f.file_field :file, class: 'form-control', required: true %>
  </div>

  <div class="form-group">
    <%= f.label :upload_thumbnail %>
    <%= f.file_field :upload_thumbnail, class: 'form-control', required: true %>
  </div>

  <div class="form-group">
    <%= f.label :title %>
    <%= f.text_field :title, class: 'form-control', required: true %>
  </div>

  <div class="form-group">
    <%= f.label :description %>
    <%= f.text_area :description, class: 'form-control', cols: 3 %>
  </div>

  <%= f.submit 'Upload', class: 'btn btn-primary' %>
<% end %>

服务器响应

VideoUploadsController处理#create as HTML 参数：{“utf8”=＆gt;“✓”，“authenticity_token”=＆gt;“wFf3EbDhQjJwttjnE + nbQxinH508coHBctC + hi4M4sNAyhe6fisDhGWscVDxppS9NJ3 / fcjCGQKiNFy1thAXOA ==”， “video_upload”=＆GT; { “文件”=＆GT;＃， @ original_filename =“IMG_0673.MOV”，@ content_type =“video / quicktime”， @ headers =“Content-Disposition：form-data; name = \”video_upload [file] \“; filename = \“IMG_0673.MOV \”\ r \ nConContent-Type：video / quicktime \ r \ n“＆gt;， “upload_thumbnail”=＆GT;＃， @ original_filename =“protest_3.png”，@ content_type =“image / png”， @ headers =“Content-Disposition：form-data; 名= \ “video_upload [upload_thumbnail] \”; filename = \“protest_3.png \”\ r \ nConContent-Type：image / png \ r \ n“＆gt;， “title”=＆gt;“o iuiou goiug oiug piu gpiugpiu”，“description”=＆gt;“yg ouyg ouyg piu gpugpiu piuhpiuhpiuh [io hio h; ['o ih [oi [oih ['oih“}， “提交”=＆gt; “中上传”}

更新控制器：

def create
  @video_upload = VideoUpload.new(video_upload_params)
      [:file].try(:tempfile).try(:to_path))
    if @video_upload.save
        video = video_upload_params[:file].try(:tempfile).try(:to_path)
        account = Yt::Account.new access_token: current_user.token
        uploaded_video = account.upload_video(video, video_upload_params)
      if uploaded_video.failed?
        render :new
        flash[:error] = 'There was an error while uploading your video...'
      else
        Video.create({link: "https://www.youtube.com/watch?v=#{uploaded_video.id}",
        uid: uploaded_video.id, title: uploaded_video.title, description: uploaded_video.description})
        flash[:success] = 'Your video has been uploaded!'
      end
      redirect_to videos_path
    else
      render :new
    end
  end
private
    def video_upload_params
       params.require(:video_upload).permit(:file, :title, :description, :upload_thumbnail)
    end

VideoUploadsController处理#create as HTML 参数：{“utf8”=＆gt;“✓”，“authenticity_token”=＆gt;“V1qozopsKc8Cb9 / 99ex4GME2O6Z5MFDaPQhiILA5fLfXx0hlRKZoeRd1dkoXozfm7QzbRo2AyBnt7IATKCWJTA ==”，“video_upload”=＆gt; {“file”=＆gt;＃，@ original_filename =“IMG_0673.MOV” ，@ content_type =“video / quicktime”，@ headers =“Content-Disposition：form-data; name = \”video_upload [file] \“; filename = \”IMG_0673.MOV \“\ r \ nConContent-Type：video / quicktime \ r \ n“＆gt;，”upload_thumbnail“=＆gt;＃，@ original_filename =”protest_3.png“，@ content_type =”image / png“，@ headers =”Content-Disposition：form-data; name = \“video_upload [upload_thumbnail] \”; filename = \“protest_3.png \”\ r \ nConContent-Type：image / png \ r \ n“＆gt;，”title“=＆gt;”; lekhjg wktrj hoibwj 5tor [fij [boij r [oijj [goj [oi j“，”description“=＆gt;”woer jgowiejr [ihjg w [oei fgoi joifj g [okj fskdjfa; lkj f; klajs d; lfkdaj sd; lkfj a; lskdjf lakjs df; lkaj] sdk e; lkrj; gkj4 roij toi2j 45oirj toij 45oijrtij 54ij = tioj = j5 = oi ejwrgoij wroiejh gpoiej rtpoihj ep5iojt rpoibj5 t“}，”commit“=＆gt;”Upload“}

Answer 1

获取请求

GET "videouploads/new", "videouploads#new"

服务器呈现videouploads/new.html.erb和表单字段@videoupload.upload_thumbnail

<div class="form-group">
  <%= f.label :upload_thumbnail %>
  <%= f.file_field :upload_thumbnail, class: 'form-control', required: true %>
</div>

用户填写表单并提交

具有强参数的控制器允许读取这些参数。这是参数，您需要关注"upload_thumbnail"。您可以在此处传递视频游戏的值。它包含"upload_thumbnail"，@original_filename等其他字段。

{"utf8"=>"✓", 
 "authenticity_token"=>"somecode", 
 "video_upload"=>{
      ..a sequence of fields then.., 
      "upload_thumbnail"=>#, 
      @original_filename="protest_3.png", 
      @content_type="image/png", 
      @headers="Content-Disposition: form-data; 
      name=\"video_upload[upload_thumbnail]\"; 
      filename=\"protest_3.png\"\r\nContent-Type: image/png\r\n">, 
      "title"=>"o iuiou goiug oiug piu gpiugpiu ", 
       "description"=>"yg ouyg ouyg piu gpugpiu piuhpiuhpiuh [ io hio h; ['o ih[oi [oih [' oih "}, 
       "commit"=>"Upload"
      }

使用步骤4中路由器传递的参数创建视频上传实例，params将是以上内容：
```
@video_upload = VideoUpload.new(params)
```

问题可能您没有使用整个参数 params[:video_upload] ，只是

upload_thumbnail: params[:video_upload][:upload_thumbnail]

从上面可以看出，它将等于：

"upload_thumbnail"=>#,

缩略图还有许多其他字段，例如

@original_filename="protest_3.png", 
@content_type="image/png", 
@headers="Content-Disposition: form-data; 
name=\"video_upload[upload_thumbnail]\"; 
filename=\"protest_3.png\"\r\nContent-Type: image/png\r\n">, 
"title"=>"o iuiou goiug oiug piu gpiugpiu ", 
"description"=>"yg ouyg ouyg piu gpugpiu piuhpiuhpiuh [ io hio h; ['o ih[oi [oih [' oih "}, 
"commit"=>"Upload"

因此，使用所有参数

@video_upload = VideoUpload.new(your_strong_params)

你需要使用rails strong params

http://weblog.rubyonrails.org/2012/3/21/strong-parameters/

然后保存实例video_upload
```
@video_upload.save
```

如果这不能解决问题，您需要使用调试器停止或使用put ruby语法在服务器上打印以下字段：

puts @video_upload.errors.full_messages

或者通过调试检查出来并告诉我们您是否有任何错误消息，因为可能您没有保存它...或者可能

Rails使用YT Gem从应用上传YouTube缩略图

1 个答案: