Rails4: CKEditor gsub错误
Rails4: CKEditor gsub错误
提问于 2017-04-11 01:33:57
我在Rails4中有一个项目，它使用了ckeditor和cloudinary。上传到Cloudinary的uplaod运行良好，但是在上传之后，当编辑器应该加载图像时，我得到了错误：
NoMethodError - undefined method `gsub' for nil:NilClass:
我的CKEditor图片上传工具是：
# encoding: utf-8
class CkeditorPictureUploader < CarrierWave::Uploader::Base
include Ckeditor::Backend::CarrierWave
include Cloudinary::CarrierWave
include CarrierWave::MiniMagick
[:extract_content_type, :set_size, :read_dimensions].each do |method|
define_method :"#{method}_with_cloudinary" do
send(:"#{method}_without_cloudinary") if self.file.is_a?(CarrierWave::SanitizedFile)
{}
end
alias_method_chain method, :cloudinary
end
process :read_dimensions
# Create different versions of your uploaded files:
version :thumb do
process :resize_to_fill => [118, 100]
end
version :content do
process :resize_to_limit => [800, 800]
end
# Add a white list of extensions which are allowed to be uploaded.
# For images you might use something like this:
def extension_white_list
Ckeditor.image_file_types
end
end当我去上传并点击"find image on server“时，图片就在那里，我可以在编辑器上加载图片，但不能在上传图片到服务器时加载。
以前有人遇到过这个问题吗？
谢谢!
回答 2
Stack Overflow用户
发布于 2017-04-12 20:54:57
出现此错误的原因是gsub在ckeditor中找不到上传图像的url。您必须在您的应用程序的lib/ckeditor文件夹中创建ckeditor asset_response.rb文件，并将这行代码
def asset_url(relative_url_root)
@ckeditor_assets = Ckeditor::Picture.last.url_content
puts @ckeditor_assets.inspect
#return nil if asset.url_content.nil?
url = @ckeditor_assets #Ckeditor::Utils.escape_single_quotes(asset.url_content)
if URI(url).relative?
"#{relative_url_root}#{url}"
else
url
end
end放入全部代码，并将asset_url方法替换为以下代码。这只是一个包含Ckeditor::Picture模型的技巧。
将cloudinary的代码放在CkeditorPictureUploader文件中
include Ckeditor::Backend::CarrierWave
include Cloudinary::CarrierWave
process :tags => ["photo_album_sample"]
process :convert => "jpg"
version :thumbnail do
eager
resize_to_fit(200, 200)
cloudinary_transformation :quality => 80
endStack Overflow用户
发布于 2018-06-09 03:03:14
从@t-s的回答中，我发现在Ckeditor::AssetResponse#asset_url方法中，asset对象不会被重新加载，因此asset.content_url将始终为空，从而导致错误。我这样修复它：
class Ckeditor::Picture < Ckeditor::Asset
...
def url_content
url(:content) || begin
if persisted?
reload
url(:content)
end
end
end
end如果你有Ckeditor::AttachmentFile类，它也是一样的。
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原文链接：
https://stackoverflow.com/questions/43329496
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