本文介绍了Carrierwave和mini_magick发现宽度和宽度高度的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
经过一番调查后,我决定在我的新rails3应用程序上使用Carrierwave和mini_magick。
After a bit of investigation I decided to use Carrierwave and mini_magick on my new rail3 app.
我已经设置了它,它完美无缺。但是我有一个问题。我希望能够访问宽度和高度,所以我可以正确地形成html。但是,没有用于获取此信息的默认数据。由于它存储数据的方式,我无法想到任何可以将其添加到数据库的方法。
I've set it up and it works perfectly. However I have a one question. I'd like to be able to access the width and height, so I can form the html correctly. However, there is no default data from which to get this information. Because of the way it stores the data I'm I cannot think of any way that I can add it to the database.
有人可以提出任何提示或想法吗?它甚至可能吗?
Can anyone suggest any tips or ideas? Is it even possible?
推荐答案
class Attachment
mount_uploader :file, FileUploader
def image
@image ||= MiniMagick::Image.open(file.path)
end
end
并像这样使用它:
Attachment.first.image['width'] # => 400
Attachment.first.image['height'] # => 300
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