ruby-on-rails – 图像和视频的回形针

在我的应用程序中,我已经有上传图片的回形针,但需要更改以接受图像和视频.图像已经在具有belongs_to关系的模型中定义,称为附件.由于视频也将是相同父模型的附件(在我的情况下,文章),我想重复使用相同的附件模型的图像和&视频.这是一个好主意吗？

我的attachment.rb的代码是：

class Attachment < ActiveRecord::Base

  belongs_to :article 

  has_attached_file :url,:s3_protocol => :https,styles: { 
      medium: "300x300>",thumb: "100x100>",big: "1200x1200>",normal: "600x600>" 
    }

  validates_attachment_content_type :url,content_type: /Aimage|Avideo/.*Z/

  validates_attachment :url,content_type: { content_type: ["image/jpeg","image/gif","image/png","video/mp4"] }

end

但事实并非如此,它并没有在S3上存储视频.我在终端上得到以下内容

Command :: file -b --mime '/var/folders/v_/pf2bsxnj1y37ccd2pjksv7z80000gn/T/f3e2afc957bb9fb2aa3e77e69359c48920160131-13311-pyeez1.mp4'
Command :: identify -format '%wx%h,%[exif:orientation]' '/var/folders/v_/pf2bsxnj1y37ccd2pjksv7z80000gn/T/8dc7385648e2164764b72fda6fd9099a20160131-13311-1l40ccn.mp4[0]' 2>/dev/null
[paperclip] An error was received while processing: #<Paperclip::Errors::NotIdentifiedByImageMagickError: Paperclip::Errors::NotIdentifiedByImageMagickError>
Command :: identify -format '%wx%h,%[exif:orientation]' '/var/folders/v_/pf2bsxnj1y37ccd2pjksv7z80000gn/T/8dc7385648e2164764b72fda6fd9099a20160131-13311-1l40ccn.mp4[0]' 2>/dev/null
[paperclip] An error was received while processing: #<Paperclip::Errors::NotIdentifiedByImageMagickError: Paperclip::Errors::NotIdentifiedByImageMagickError>
Command :: file -b --mime '/var/folders/v_/pf2bsxnj1y37ccd2pjksv7z80000gn/T/f3e2afc957bb9fb2aa3e77e69359c48920160131-13311-kvb5nr.mp4'

第二个问题是因为我正在使用AngularJS作为前端,我可以利用HTML< video>标记以将视频呈现给用户？

#app/models/attachment.rb
class Attachment < ActiveRecord::Base
    has_attached_file :url,styles:  lambda { |a| a.instance.is_image? ?  medium: "300x300>",normal: "600x600>" } : {:thumb => { :geometry => "100x100#",:format => 'jpg',:time => 10},:medium => { :geometry => "300x300#",:time => 10}}},processors: [:transcoder]

    validates_attachment :url,content_type: ['video/mp4'],message:      "Sorry,right now we only support MP4 video",if:           :is_video?

    validates_attachment :url,content_type: ['image/png','image/jpeg','image/jpg','image/gif'],message:      "Different error message",if:           :is_image?

  private

  def is_video?
    url.instance.attachment_content_type =~ %r(video)
  end

  def is_image?
    url.instance.attachment_content_type =~ %r(image)
  end
end