使用OmniAuth时，如何指定用户的Facebook帐户需要哪些访问权限？
当您使用OmniAuth通过Facebook登录Web应用程序时，这些是webapp具有的权限：
Access my basic information Includes name, profile picture, gender, networks, user ID, list of friends, and any other information I've shared with everyone. Send me email WebApp may email me directly at email@email.com Access my data any time WebApp may access my data when I'm not using the application 然而，当您使用mini_fb gem将Web应用程序链接到Facebook时，这些是权限（必须将其指定为代码，否则格式化很奇怪）：
Access my basic information Includes name, profile picture, gender, networks, user ID, list of friends, and any other information I've shared with everyone. Required Send me email WebApp may email me directly at email@email.com · Required Access my profile information Likes, Music, TV, Movies, Books, Quotes, About Me, Activitie...s, Interests, Groups, Events, Notes, Birthday, Hometown, Current City, Website, Religious and Political Views, Education History, Work History and Facebook StatusSee More Required Online Presence Required Access my family & relationships Family Members and Relationship Status Required Access my photos and videos Photos Uploaded by Me, Videos Uploaded by Me and Photos and Videos of Me Required Access my friends' information Birthdays, Religious and Political Views, Family Members and... Relationship Statuses, Hometowns, Current Cities, Likes, Music, TV, Movies, Books, Quotes, Activities, Interests, Education History, Work History, Online Presence, Websites, Groups, Events, Notes, Photos, Videos, Photos and Videos of Them, 'About Me' Details and Facebook StatusesSee More Required Post to my Wall WebApp may post status messages, notes, photos, and videos to my Wall Access messages in my inbox Access posts in my News Feed Access my data any time WebApp may access my data when I'm not using the application Access Facebook Chat Send me SMS messages WebApp may send SMS messages to my phone: Manage my events WebApp may create and RSVP to events on my behalf Access my custom friend lists Access my friend requests Insights WebApp may access Insights data for my pages and applications Manage my advertisements
我目前正在使用OmniAuth ，并希望继续这样做，但我的应用程序需要更多权限，就像mini_fb具有的一些额外权限。 有谁知道如何自定义OmniAuth以请求额外的权限？
您可以使用:scope属性检查选项：
use OmniAuth::Strategies::Facebook, 'app_id', 'app_secret', {:scope => 'email,offline_access, your,scope,you,want'}
检查Facebook权限文档您真正想要的范围，并通过以下命令将其定义为:scope选项。
如果你使用初始化程序来定义你的OamniOauth，那就是这样的：
Rails.application.config.middleware.use OmniAuth::Builder do provider :facebook, 'APP_ID', 'APP_SECRET', {:scope => 'email,offline_access, your,scope,you,want'} end
如果您正在使用设计（像我一样），最简单的解决方案是在Gemfile中同时使用’devise’和’omniauth-facebook’。 然后在您的设计初始化程序中，您只需添加：
config.omniauth :facebook, "app", "secret", :scope => "user_photos"
这样做很好。 使用设计设置添加omniauth初始化程序