HI, I hava a website in php where i have integrated a Facebook Connect API which enabled the Facebook login button.
I login using the button by providing my Facebook credentials. It gets logged in. I can access my profile picture, full name and some other information. But i can't access the user email id i.e. the Facebook user id. I have checked the FBML page here but i didn't get any tag that may give me the user id. I guess that Facebook might not allow me to get the id.
Please help me how to get the Facebook user id from the Facabook Connect API.
Apparently, Facebook uses an numeric increment ID instead of email addresses to uniquely identify each User entity. By Facebook API policies, email addresses are protected to prevent spam and other issues.
In order for an application to get the email addresses of a Facebook User, you will need special permissions from the User. See the API for such permissions.
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I and a friend are developing an app and would like to use Facebook as a way of users having their own accounts without us having to ask them to store passwords or make users for security and ease of use.
Passport.js has a facebook plugin but it talks about a redirect URL so my question is: is it actually possible to just send information like email address and password to facebook for authorisation and return the users profile without actually redirecting the user to a facebook login page.
I don't see how i could redirect the user to a facebook login while inside my app and also what on earth would i put as the callback URL? Am i just trying to use passport-facebook in the wrong way?
is it actually possible to just send information like email address and password to facebook for authorisation
No. Users are strongly discouraged from giving this information to any 3rd party app, and you are not allowed to ask users for them.
Login with username/email and password happens on Facebook, not in your app. You will get feedback from the login endpoint then that they logged in successfully.
I have a website where users can log in with the Facebook oAuth API.
Once the user logs in or registers via Facebook it is stored in my database.
But what I'd like to achieve is, once the user goes to his Facebook application settings page and removes my website app permissions, the used should also be deleted from my database.
Is there any work around to this problem, if this is not possible via the Facebook oAuth API?
You can add Deauthorise Callback URL by Navigating to Settings > Advanced section of your application. Whenever a User Deauthorises your Facebook app, Facebook performs a HTTP POST of signed request to your URL. You may use the field user_id to determine which User has deauthorised your app.
Actually, I would do the following:
Add a date to his last log in to your site.
Have cron job check for old, unused accounts.
Send an email to the user's email address (or Facebook message mail) telling him his account is due to expire soon.
Delete account from database.
Facebook is blocked by my company firewall but I want to develop an app where in employees can click a link we send it to their email and provide access to their facebook account and update. Firewall blocks facebook.com so I cannot have users type their username and password on facebook.com url. Can I have users type in their username and passowrd on internal website using which the app will login and get access?
it goes against the purpose of oauth to take the user's password and use it to log in as that user. oauth is designed so that the user will never have to disclose their password to your app but still be able to provide your app with some of their own facebook data. this way, only the facebook data which the user chooses to share will be available to your app. also the user may choose to allow your app to publish on their behalf, see here for the details.
my suggestion would be to get the users to authenticate your app from outside the work network (where the facbook.com url is available). this way you can still post on their behalf and your app can get certain information from their profile to relay on to them without you ever needing to know their password.
I am using Register via Facebook for my website.
After a user authenticates via Facebook Login, I retrieve and store their email address and name (nothing else).
Is there some type of unique identifier that goes along with everyone's facebook account?
What if someone changes their email address on their Facebook account?
I've checked their docs but can't find anything to use.
You are looking for user id. This is going to be unique for each facebook user and cannot change (unless some user deletes their facebook account and then goes in a registers a new facebook account)
Every Facebook user has a unique 'userId'. This userId will never change.
http://developers.facebook.com/docs/reference/api/user/
Is there any way to get the Facebook User Id of visitors in my website by using the FB API, but without need to ask them to authenticate my Facebook app?
All I need is some facebook-related-identifier, it does not even have to be the User Id, but any kind of identifier that can relate the user to a facebook profile.
Ideas?
If the user does not explicitly authorize you to get some private data from his Facebook account (included his Facebook ID), you can not get them.
I cannot think of a way to get the Facebook ID without the authorization of the user.
Hope that helps.