载波mongoid minimagick

Question

我知道有人问了很多问题，但都找不到答案，也不知道如何解决我的问题。我想在第一次上传时调整图像的大小，但它不起作用。我可以在不调整大小的情况下正确加载图像。问题是当我添加process :resize_to_fit => 300时，-1

我有一个带有gem的rails 4应用程序

gem 'carrierwave'
gem 'carrierwave-mongoid', :require => 'carrierwave/mongoid'
gem 'fog'
gem 'mini_magick'
gem 'mongoid', '~> 4.0.0.beta1'

the image_uploader.rb

class ImageUploader < CarrierWave::Uploader::Base

  include CarrierWave::MiniMagick

  # Choose what kind of storage to use for this uploader:
  storage :fog

  process :resize_to_fit => [300, -1]

  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end

  def extension_white_list
    %w(jpg jpeg gif png)
  end

end

Answer 1

更改此行

  process :resize_to_fit => [300, -1]

至

process :scale => [200, 300] #specify whatever width and height you want there and try

抱歉，您需要在uploader中添加此方法

 def scale(width, height)
     # do something
   end