[英]Uploading a remote file url from Rails Console with Carrierwave
I just wanted to know how one would go about uploading a remote file url using Carrierwave in the Rails console. 我只是想知道如何使用Rails控制台中的Carrierwave上传远程文件url。
I tried the following without any luck. 我没有运气就尝试了以下方法。 I presume it's not processing the Uploader?
我认为它没有处理上传器?
user = User.first
user.remote_avatar_url = "http://www.image.com/file.jpg"
user.save
Many thanks 非常感谢
Take a look at the ' Uploading files from a remote location ' section on this page https://github.com/carrierwaveuploader/carrierwave 看一下此页面上的“ 从远程位置上传文件 ”部分https://github.com/carrierwaveuploader/carrierwave
CarrierWave should throw an error if the url of the location is invalid 如果位置的网址无效,则CarrierWave应该引发错误
2.1.3 :015 > image.remote_image_url = "http"
=> "http"
2.1.3 :016 > image.save!
(0.2ms) BEGIN
(0.2ms) ROLLBACK
ActiveRecord::RecordInvalid: Validation failed: Image trying to download a file which is not served over HTTP
Or if it's an unknown host: 或者,如果它是未知主机:
2.1.3 :017 > image.remote_image_url = "http://foobar"
=> "http://foobar"
2.1.3 :018 > image.save!
(0.4ms) BEGIN
(0.4ms) ROLLBACK
ActiveRecord::RecordInvalid: Validation failed: Image could not download file: getaddrinfo: nodename nor servname provided, or not known
Please also note that if you want to download remote images you should prefix the attribute with remote_
and suffix it with _url
, as shown in the example 还请注意,如果要下载远程图像,则应在属性
remote_
加上remote_
并在其后缀_url
,如示例所示
user = User.first
user.remote_avatar = File.open(FILE_LOCATION)
user.save
FILE_LOCATION can be FILE_LOCATION可以是
File.join(Rails.root, '/files/png-sample.png')
if file is found in a folder 'files' in rails project 如果在rails项目的文件夹“文件”中找到文件
I was facing the same problem. 我面临着同样的问题。 and the issue might be http is redirecting to https.
可能是http正在重定向到https。 So I replaced them using gsub as follows:
因此,我使用gsub替换了它们,如下所示:
image.remote_image_url = remote_image_url.gsub('http://','https://')
image.save!
this should most probably solve the problem. 这最有可能解决问题。
I have had problems with remote_avatar_url not uploading the image or throwing any errors. 我遇到remote_avatar_url无法上传图像或引发任何错误的问题。 For me, as far as I can tell, it was because I set the following in my model.
据我所知,这是因为我在模型中设置了以下内容。
attr_accessor :remote_avatar_url
Carrierwave covers this for you, and although I don't understand why, setting it yourself buggers things up. Carrierwave可以为您解决这个问题,尽管我不明白为什么,但是自行设置它会使事情烦恼。
Is work as: 是作为:
url='http://host.domain/file.jpg'
time=Time.now.to_i.to_s
myfile=IO.sysopen("tmp/"+time+"_img."+url.split(".").last,"wb+")
tmp_img=IO.new(myfile,"wb")
tmp_img.write open(URI.encode(url)).read
if File.exist?("tmp/"+time+"_img."+url.split(".").last)
"tmp/"+time+"_img."+url.split(".").last
image = ActionDispatch::Http::UploadedFile.new(:tempfile => tmp_img, :filename => File.basename(tmp_img))
else
image=nil
end
@your_model.image=image
@your_model.save
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