问题描述
我想在S3存储上通过回形针上传图片。
我使用：
Ruby 1.9.3
Rails 3.2.6
paperclip 3.1 .3
aws-sdk 1.3.9
我有我的图片模型：
class资产
has_attached_file：资产，
：styles => {：thumb => 60x60>}，
：storage => ：s3，
：s3_credentials => ＃{Rails.root} /config/s3.yml，
：path => /pictures/:id/:style.:extension
validates_attachment_content_type：asset，：content_type => ['image / gif'，'image / jpeg'，'image / png'，'image / x-ms-bmp']
end
所以基本上我是这样从URL下载我的文件的：
picture = Asset.new（asset：open（http://www.my_url.com/my_picture.jpg））
picture.save
但是它保存了一个不好的file_name文件，并且它没有设置文件的扩展名：
＃<资产id：5，asset_file_name：open-uri20120717-6028-1k3f7xz，asset_content_type：image / jpeg，asset_update_at：nil，asset_file_size：91565，created_at： 2012-07-17 12:41:40，updated_at：2012-07-17 12:41:40>
p.asset.url
=> http://s3.amazonaws.com/my_assets_path/pictures/5/original。
您可以看到没有扩展名。
我找到了解决方法，但我确信我可以有更好的方法。这个解决方案是在我的电脑上复制文件，然后我像这样在S3上发送它：
filename =＃{Rails。 root} /tmp/my_picture.jpg
open（filename，'wb'）do | file |
档案<< open（http://www.my_url.com/my_picture.jpg）.read
end
picture = Asset :: Picture.new（asset：open（filename））
picture.save
这适用于我的电脑：
＃< Asset :: Picture id：10，asset_file_name：my_picture.jpg，asset_content_type：image / jpeg，asset_update_at：nil，asset_file_size：91565， created_at：2012-07-17 12:45:30，updated_at：2012-07-17 12:45:30>
p.asset.url
=>
然而，我不知道这种方法是否可以在Heroku上工作（我托管我的应用程序）。
没有更好的方法，文件？
好时机。我刚刚发送了一个请求，在几个小时前（2012年7月20日）进行了修补，这应该让您的生活变得轻松自在。
self.asset = URI.parse（http://s3.amazonaws.com/blah/blah/blah.jpg）
这将下载您的jpeg图像，确保文件名为blah.jpg，内容类型为'image / jpg'。
回形针版本> 3.1.3（您需要将它链接到github repo，直到它被发布）。
$ b
更新：确认使用回形针版本> = 3.1.4
p>I would like to upload pictures from URLs by paperclip on S3 storage.I work with :
Ruby 1.9.3
Rails 3.2.6
paperclip 3.1.3
aws-sdk 1.3.9
I have my Picture Model:
class Asset
has_attached_file :asset,
:styles => {:thumb => "60x60>"},
:storage => :s3,
:s3_credentials => "#{Rails.root}/config/s3.yml",
:path => "/pictures/:id/:style.:extension"
validates_attachment_content_type :asset, :content_type => ['image/gif', 'image/jpeg', 'image/png', 'image/x-ms-bmp']
end
So basically I made this to download my file from an URL:
picture = Asset.new(asset: open("http://www.my_url.com/my_picture.jpg"))
picture.save
But it save my file with a bad file_name and it doesn't set the extension of the file :
#<Asset id: 5, asset_file_name: "open-uri20120717-6028-1k3f7xz", asset_content_type: "image/jpeg", asset_update_at: nil, asset_file_size: 91565, created_at: "2012-07-17 12:41:40", updated_at: "2012-07-17 12:41:40">
p.asset.url
=> http://s3.amazonaws.com/my_assets_path/pictures/5/original.
As you can see there is no extension.
I found a method to solve it but I'm sure I can have a better way. This solution is to copy the file on my computer then I send it on S3 like this:
filename = "#{Rails.root}/tmp/my_picture.jpg"
open(filename, 'wb') do |file|
file << open("http://www.my_url.com/my_picture.jpg").read
end
picture = Asset::Picture.new(asset: open(filename))
picture.save
This works on my computer:
#<Asset::Picture id: 10, asset_file_name: "my_picture.jpg", asset_content_type: "image/jpeg", asset_update_at: nil, asset_file_size: 91565, created_at: "2012-07-17 12:45:30", updated_at: "2012-07-17 12:45:30">
p.asset.url
=> "http://s3.amazonaws.com/assets.tests/my_assets_path/10/original.jpg"
However I don't know if this method will work on Heroku (I host my app on it).
There is not a better way without pass by a temporary file?
Good timing. I just sent a pull request that was patched in a few hours ago (Jul 20 2012) which should make your life real easy.
self.asset = URI.parse("http://s3.amazonaws.com/blah/blah/blah.jpg")
This will download your jpeg image, ensure that the filename is blah.jpg and the content type is 'image/jpg'
Paperclip version > 3.1.3 (you'll need to link it to github repo until it gets released).
UPDATE: confirmed working with paperclip version >= 3.1.4
这篇关于回形针：从带有扩展名的网址上传的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！