我正在使用omniauth-twitter gem。在我的用户模型apply_omniauth方法,我保存这样的Twitter图片路径,剥离_normal后缀:
if omniauth['provider'] == 'twitter'
self.image = omniauth['info']['image'].sub("_normal", "")
end
然后,我有所谓的肖像一个helper方法接受一个尺寸参数。至于特伦斯·伊登建议,您只需更换_size后缀的文件名来访问the different image sizes that Twitter provides:
def portrait(size)
# Twitter
# mini (24x24)
# normal (48x48)
# bigger (73x73)
# original (variable width x variable height)
if self.image.include? "twimg"
# determine filetype
case
when self.image.downcase.include?(".jpeg")
filetype = ".jpeg"
when self.image.downcase.include?(".jpg")
filetype = ".jpg"
when self.image.downcase.include?(".gif")
filetype = ".gif"
when self.image.downcase.include?(".png")
filetype = ".png"
else
raise "Unable to read filetype of Twitter image for User ##{self.id}"
end
# return requested size
if size == "original"
return self.image
else
return self.image.gsub(filetype, "_#{size}#{filetype}")
end
end
end
此答案给出了更详细和有用的答案,以及用子方法去除“_normal”的解决方案。谢谢! – 2013-05-22 20:57:25