socialforge/app/helpers/avatar_helper.rb

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2013-08-01 10:33:49 +08:00
module AvatarHelper
AVATAR_SIZE="50x50"
def avatar_image(source)
File.join(relative_path, avatar_directory(source.class), source.id.to_s)
end
def relative_path
"avatars" #File.join("images","avatars")
end
def storage_path
File.join(Rails.root, "public", "images", relative_path)
end
def avatar_directory(source_type)
"#{source_type}"
end
def avatar_filename(source_id,image_file)
"#{source_id}" #<< file_extension(image_file)
end
def disk_filename(source_type,source_id,image_file=nil)
File.join(storage_path,avatar_directory(source_type),avatar_filename(source_id,image_file))
end
def file_extension(filename=nil)
$1 if filename =~ %r{(\.[a-zA-Z0-9]+)$}
end
def get_avatar(source)
if source.nil?
return File.join(relative_path,'AnonymousUser','0')
end
if source.class && source.id && File.exist?(disk_filename(source.class,source.id))
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avatar_image(source)
else
File.join(relative_path,avatar_directory(source.class),'0')
end
end
def get_avatar?(source)
if File.exist?(disk_filename(source.class,source.id))
return true
else
return false
end
end
end