Rails - 如何即时生成缩略图

发布于 2024-12-31 21:09:45 字数 289 浏览 3 评论 0原文

我正在寻找一种方法来动态生成上传图像的缩略图。我有一个看起来像这样的产品模型：

    class Product
      include Mongoid::Document
      include Mongoid::Paperclip

      has_mongoid_attached_file :picture
    end

我基本上只想上传一张高分辨率图片，然后我可以将其用于缩略图、主图像以及精美盒子的高分辨率图片等。

是有一个简单的方法可以做到这一点吗？

原文

I am looking for a way to generate thumbnails of my uploaded images on the fly. I have a product model that looks kind of like this:

    class Product
      include Mongoid::Document
      include Mongoid::Paperclip

      has_mongoid_attached_file :picture
    end

I basically just want to upload one high-res picture, which I can then use for thumbnails, the main image and also the high-res picture for fancy-box etc..

Is there an easy way to do this?

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隐诗 2025-01-07 21:09:45

您可以为回形针 Attached_file 设置许多属性。

例如，

has_mongoid_attached_file :picture,
    :styles => {
      :original => ['1920x1680>', :jpg],
      :small    => ['100x100#',   :jpg],
      :medium   => ['250x250',    :jpg],
      :large    => ['500x500>',   :jpg]
    }

您可以为多个版本的图像设置 :styles 属性，并具有您想要的尺寸和格式。

请查看此处了解更多详细信息。不过，您确实需要像 RMagick / Imagemagick 这样的图像处理器。

There are many attributes you can set for paperclip attached_file.

e.g.,

has_mongoid_attached_file :picture,
    :styles => {
      :original => ['1920x1680>', :jpg],
      :small    => ['100x100#',   :jpg],
      :medium   => ['250x250',    :jpg],
      :large    => ['500x500>',   :jpg]
    }

You can set the :styles attributes with many versions of the image with the sizes and formats you want.

Check here for more details. You do need image processor like RMagick / Imagemagick though.

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