Użyj obrazu base64 z Carrierwave
Chcę wykonać podobną rzecz jak z Base64 photo i paperclip-Rails, ale z Carrierwave. Czy ktos moze mi wyjasnic Uzywanie obrazkow base64 w Carrierwave?
6
2 answers
class ImageUploader < CarrierWave::Uploader::Base
class FilelessIO < StringIO
attr_accessor :original_filename
attr_accessor :content_type
end
before :cache, :convert_base64
def convert_base64(file)
if file.respond_to?(:original_filename) &&
file.original_filename.match(/^base64:/)
fname = file.original_filename.gsub(/^base64:/, '')
ctype = file.content_type
decoded = Base64.decode64(file.read)
file.file.tempfile.close!
decoded = FilelessIO.new(decoded)
decoded.original_filename = fname
decoded.content_type = ctype
file.__send__ :file=, decoded
end
file
end
7
Author: Dmitry Galinsky,
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2011-10-26 11:40:17
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2011-10-26 11:40:17
Zaakceptowana odpowiedź nie zadziałała na mnie (v0.9). Wydaje się, że jest to sprawdzanie, które nie powiedzie się przed wywołaniem zwrotnym cache.
Ta implementacja działa:
class ImageUploader < CarrierWave::Uploader::Base
# Mimick an UploadedFile.
class FilelessIO < StringIO
attr_accessor :original_filename
attr_accessor :content_type
end
# Param must be a hash with to 'base64_contents' and 'filename'.
def cache!(file)
if file.respond_to?(:has_key?) && file.has_key?(:base64_contents) && file.has_key?(:filename)
local_file = FilelessIO.new(Base64.decode64(file[:base64_contents]))
local_file.original_filename = file[:filename]
extension = File.extname(file[:filename])[1..-1]
local_file.content_type = Mime::Type.lookup_by_extension(extension).to_s
super(local_file)
else
super(file)
end
end
end
2
Author: cyrilchampier,
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2014-02-12 10:18:35
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2014-02-12 10:18:35