Rails CarrierWave versions are not created for some reason

问题

I have the following file uploader

class ItemImageUploader < CarrierWave::Uploader::Base
  include ::CarrierWave::Backgrounder::Delay
  include CarrierWave::MiniMagick
  include Sprockets::Helpers::RailsHelper
  include Sprockets::Helpers::IsolatedHelper

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

  # Provide a default URL as a default if there hasn't been a file uploaded:
  def default_url
    asset_path("fallback/" + [version_name, "image.png"].compact.join('_'))
  end

  def cache_dir
      "uploads/tmp"
  end

  # Create different versions of your uploaded files:
  version :thumb do
    process :resize_to_fill => [80,80]
  end

  def extension_white_list
    %w(jpg jpeg gif png)
  end

Picture class

class Picture < ActiveRecord::Base
  belongs_to :imageable, :polymorphic => true
  mount_uploader :image, ItemImageUploader
  process_in_background :image
  validates_presence_of :image

  def copy
    Picture.new(:image => self.image)
  end

And the following config in carrier_wave.rb initialization file:

CarrierWave.configure do |config|
config.enable_processing = true
    #config.permissions = 0666
    #config.directory_permissions = 0777
    config.storage = :file
end

Images uploaded properly, but no thumbnails created, no errors occurred. Please advise.

回答1:

Just hit my head against this one myself. As the comments suggest, using carrierwave_backgrounder causes this problem. You can see it in their documentation:

process_in_background - This stores the original file with no processing/versioning.

Doesn't help with a solution, but I thought I'd verify the problem.

回答2:

I struggled with this for a couple of hours today, because I had the same issue. Uploading of the original version would work, but it was not resized. It was working locally, but not on my production machine. Hope someone with the same issues stumbles on this answer and saves some time.

Turned out that my version of ImageMagick was not build with the correct delegates, this was the output of $ convert -version:

Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-01 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Features: Cipher DPC OpenMP 
Delegates (built-in): zlib

I used this answer to install the delegates and build a fresh version of ImageMagick: ImageMagick missing decode delegates

After that, pulled up the ImageMagick info with $ convert -version:

Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-01 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Features: Cipher DPC OpenMP 
Delegates (built-in): bzlib djvu fontconfig freetype gvc jbig jng jpeg lcms lqr lzma openexr png tiff wmf x xml zlib

And now I'm rollin'!

来源：https://stackoverflow.com/questions/12097667/rails-carrierwave-versions-are-not-created-for-some-reason

标签

ruby-on-rails-3

ImageMagick

carrierwave

homebrew