我正在寻找一种更好的文本转图像解决方案,以替换我的当前方法,该方法是每次创建或更新新记录时使用ImageMagick生成png。
我希望防止数据被大规模抓取和滥用提供的电子邮件地址。我想知道是否有API可以生成文本或使用JavaScript、SVG等方法。除了Flash之外的任何方法都可以。
我正在寻找比当前方法更好的解决方案:
def create_new_email_image
if email_changed?
path_to_images = '/images/emails'
puts "Connecting to AWS..."
config = YAML.load(File.open("#{RAILS_ROOT}/config/s3_credentials.yml"))[RAILS_ENV]
AWS::S3::Base.establish_connection!(
:access_key_id => config['access_key_id'],
:secret_access_key => config['secret_access_key']
)
puts "Finding S3 bucket..."
begin
bucket = AWS::S3::Bucket.find config['bucket_name']
rescue AWS::S3::NoSuchBucket
AWS::S3::Bucket.create config['bucket_name']
bucket = AWS::S3::Bucket.find config['bucket_name']
end
images_path = "#{RAILS_ROOT}/tmp/"
file_name = "#{id}.png"
#file_name = "5056.png"
file_path = images_path + "/"+ file_name
File.delete file_path if File.exists? file_path
img = Magick::Image.new(400, 22) { self.background_color = 'transparent' }
img.format = 'PNG'
text = Magick::Draw.new
text.annotate(img, 0, 0, 1, 0, "#{email}") {
self.gravity = Magick::WestGravity
self.pointsize = 18
self.fill = '#000000'
self.kerning = -1
self.font_weight = Magick::BoldWeight
}
img.write file_path
if AWS::S3::S3Object.exists? file_name, bucket.name + path_to_images
puts "file exists (deleting)"
AWS::S3::S3Object.delete file_name, bucket.name + path_to_images, :force => true
end
AWS::S3::S3Object.store file_name,
File.open(file_path),
bucket.name + path_to_images,
:content_type => 'image/png',
:access => :public_read,
:reload => true
`rm #{file_path}`
end
end