问题描述
我有一个应用程序，我正在使用devise和omniauth来实现身份验证。我得到了登录/退出等等，我想知道的是，什么是最有效的方式来连接到用户图形api终点初始化并准备在我的应用程序中使用。
I have an app in which I am implementing authentication using devise and omniauth. Ive got the logging in / out etc figured out, what i wanted to know was, what is the most efficient way to have a connection to the users graph api end point initialised and ready for use within my application.
例如：如果在我想做的个人资料页面上，
eg: If on the profile page i wanted to do,
profile_image = current_user.fbgraph.get_picture("me")
API调用次数（我将在整个应用程序中使用类似的调用）
How would I accomplish this with the least number of API calls (i will be using similar calls throughout the application)
推荐答案
您可以使用类似。当您验证用户时，您可以抓取访问令牌。假设您遵循，您可以做一些事情像这样：
You can accomplish this using something like Koala. When you authenticate the user, you can grab the access token. Assuming you've followed the Devise/Omniauth tutorial, you could do something like so:
def self.find_for_facebook_oauth(response, signed_in_resource=nil)
data = response['extra']['user_hash']
access_token = response['credentials']['token']
user = User.find_by_email(data["email"])
# only log in confirmed users
# that way users can't spoof accounts
if user and user.confirmed?
user.update_attribute('fb_access_token', access_token)
user
end
end
一旦你有访问令牌，你可以这样做：
Once you have the access token, you could then do something like:
@graph = Koala::Facebook::API.new(@user.fb_access_token)
profile_image = @graph.get_picture("me")
在我的应用程序中，我查看当Facebook的回调来自用户时是否登录。如果是，我认为这个请求是链接帐户。如果没有，我认为这是一个登录请求。
In my app, I check to see if a user is logged in when the callback from Facebook comes. If they are, I assume the request was to link accounts. If they're not, I assume it's a login request.
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