I am using ASP.net C# for a web application that integrates with the Facebook API. My application will allow users to create a group for sharing code. I need to use Facebook API to let the user invite friends from Facebook to join his group on my application. This is a requirement for an assignment so please don't give suggestions to create a group of users that are registered with my site only.
Until now I have the request dialog with all the friends listed (MultiFriendSelector()) with this code:
<p> Click <span id="span-link" onclick="sendRequestViaMultiFriendSelector(); return false;">here</span> to add friends from your Facebook account to your group! </p>
But I am stuck on how to get the id's and details of these invited users so I can save them in my database and allow them to access the group they were invited to. How can I do this please? I can't seem to find anything related to this.
By the way I know that there is a related question which gives this code:
if( Request["ids"] != null )
((Site)Master).FbInviteSent(Request.QueryString.GetValues("ids"));
but I don't know what Master is and I cant get it to work.
Thanks for your help :)
Whenever you call the request dialog, you may pass a callback function:
function sendRequestViaMultiFriendSelector() {
FB.ui({method: 'apprequests',
message: 'My Great Request'
}, requestCallback);
}
The requestCallback will receive the response, and this response returns the facebook id of the users, who were invited
function requestCallback(response){
for (var i = 0; i < response.to.length; i++) {
fb_id = response.to[i];
// Do something with fb_id.
}
}
From looking at the code in the other answer it looks like the facebook API will call back to your page with a query string parameter of ids.
I.e. It will call you site with a url like this.
http://wwww.yoursitesulr.com/mypage.aspx?ids=13,22,44
You can then pull out the id's from the query string using
string myIds = Request.QueryString["ids"];
You can then convert them to a array.
var ids = myIds.Split(',');
If you are using MVC then you can take advantage of the model binders and just put an int array in your view model and it will get bound automatically.
The answer below addresses your specific issie so I would use this as a starting point.
Faceboook: Posting to Multiple Friend's Walls Using Multiple Friend Selector and JS SDK
Let me know if you have any questions regarding the above solution.
Regards
Steve
Related
I've been searching the Graph API Explorer and documentation for a long time, but I really can't find anything.
I need a simple GET request like the me/subscribes just with page-id/subscribers or something like that. Does anyone know the get I must send to get a Count of subscribers of a page?
BTW I'm using Facebook SDK and I'm using this as GET:
var fb = new FacebookClient(useraccesstoken);
dynamic result = fb.Get("i want to get subscribers of a page id what to do??");
The /me/subscribers end-point was available to users' only, and has since been removed with Graph API 2.0, along with the user_subscriptions permission.
You can get a count of the subscribers / likes for a page as follows:
/{page-id}?fields=likes
This will return an a count for the total number of likes for a given {page-id}:
{
"likes": 123456,
"id": "{page-id}"
}
Trying to access the subscribers of a page is the same as trying to access all the users that have liked the page, which Facebook doesn't allow.
I'm developing a public website and what I want to do is pretty straightforward, but I'm pulling my hair out trying to get everything working right.
I administer an open Facebook group and I want to display the public facebook events of this group on my website.
I can't seem to figure out how to setup my authentication so that I can access the event data. Here is my code for using my application to get an auth token:
var fb = new FacebookClientWrapper();
dynamic result = fb.Get("oauth/access_token", new
{
client_id = AppSettings.AppID,
client_secret = AppSettings.AppSecret,
grant_type = "client_credentials"
});
fb.AccessToken = result.access_token;
I know this works fine because I can access some information - for example, if I access a specific event by its ID, I can retrieve that information.
The problem occurs when I try to retrieve a list of events with fields within a date range:
[HttpGet]
public object GetEventDetails(string unixStartDateTime, string unixEndDateTime)
{
var parms = new Dictionary<string, object>();
parms.Add("fields", new[] { "id","name","description","start_time","venue" });
if (!String.IsNullOrEmpty(unixStartDateTime)) { parms.Add("since", unixStartDateTime); }
if (!String.IsNullOrEmpty(unixEndDateTime)) { parms.Add("until", unixEndDateTime); }
var eventsLink = String.Format(#"/{0}/events", AppSettings.GroupID);
return ObjectFactory.GetInstance<IFacebookClient>().Get(eventsLink,parms);
}
(I'm aware that even if this did succeed, the return value wouldn't be serializable - I'm not concerned about that quite yet).
This GET request returns the following message:
(OAuthException - #102) A user access token is required to request this resource.
So the message is quite clear: I need a user access token to get the data I've requested. The question is - what is the best way to do this? Can I give my application a certain permission to read this data? I've looked over all the permissions available to apps, but I don't see one that would do the trick.
I don't want to require people to log onto Facebook to look at public event data, and I love the idea of allowing people with no technical experience to essentially update the website content by posting Facebook events to the group. Right now, I have to duplicate anything they do.
I would think this kind of application would be very common, but no matter what I've read or tried, I can't quite find an example of the same thing that works.
From the docs at https://developers.facebook.com/docs/graph-api/reference/v2.0/group/events you need
A user access token for a member of the group with user_groups permission.
To avoid the hassle, you could create such an Access Token via the Graph Explorer and then store it in your application. Remember to exchange that Access Token to a long-lived one (https://developers.facebook.com/docs/facebook-login/access-tokens/#extending), and that you have to renew the Access Token every 60 days afterwards.
The exception I am getting is "The user hasn't authorized the application to perform this action". I know this is a well published exception but there are no rules which I can follow to get this code to work. I am trying to post to a friends wall via the API.
AuthenticationResult result = OAuthWebSecurity.VerifyAuthentication(Url.Action("ExternalLoginCallback", new { ReturnUrl = returnUrl }));
String accessToken = result.ExtraData["accesstoken"];
FacebookClient client = new FacebookClient(accessToken);
dynamic parameters = new ExpandoObject();
arameters.message = "Testing";
I have managed to get my friends facebook ids and this is facebookFriendID
object resTest = client.Post("/" + facebookFriendID + "/feed", parameters);
This is throwing the exception. Do I need to set any special options in my app to allow this to post to friends walls and/or do the users receving the post need to accept the app first? Is there any other params I need to send?
Thanks in advance
Posting to a friend's wall has been disabled
Post to friends wall via the API generate a high levels of negative user feedback, including “Hides” and “Mark as Spam" and so we are removing it from the API. If you want to allow people to post to their friend’s timeline from your app, you can invoke the feed dialog. Stories that include friends via user mentions tagging or action tagging will show up on the friend’s timeline (assuming the friend approves the tag).
https://developers.facebook.com/blog/post/2012/10/10/growing-quality-apps-with-open-graph/
ensure which authorization check the user has access to only his/her pages or whole application.
For basic authorization you can do like this
[BasicAuthorize]
public ActionResult Index()
{
// code will go here
}
For Anonymous
[AllowAnonymous]
public ActionResult Index()
{
// code will go here
}
[BasicAuthorize] requires at least user should login
[AllowAnonymous] Allow Every one to application
I think the exception is pretty explicit: your app must ask the target user for an authorization to post on its wall, and the user has to approve it. Imagine how would Facebook it be if any app could just post whatever it wanted on anyone's behalf in anyone's wall.
Depending on your implementation, you will need to ask for the publish_stream, status_update, or even other permission.
Do I pass this as a param? – CR41G14
I think it's more complicated than that, as you have to ask for the permission before acting. Check out this question for some information that may help you (here in SO there are several other questions about the topic, too).
I'm developping an application that uses Twitter API to collect informations about users.
I'm using linqToTwitter in my current project but it does not allow me a lot of thing that I want to do.
For example I need getting a follower list of a searched user.
LinqToTwitter allowed me finding a user who the name is given and who is in the follower list of the authenticate user.
The code is the following:
public List<User> RecupererFollower()
{
var friendship =
(from friend in MainPage.twitterCtxProp.Friendship
where friend.Type == FriendshipType.FollowersList
&& friend.SourceScreenName==MainPage.texte
select friend).ToList();
Followers = (from friend in friendship
select new User //Un utilisateur est créé grâce aux données récupérées précédemment.
{
Name = friend.ScreenName
}).ToList(); //Cette partie constitue la liste de tweets récupérés précédemment.
return Followers;
}
But even this doesn't work because this query requires a specific screenName of a particular user.
I don't want this I want more general functions.
What can I do?
Someone knows other resources for Windows 8 metro application?
The #millimoose comment, "an API client library will probably only give you access to the API itself" is quite accurate. The particular query you're trying to use is documented at Handling Friendships. The documentation also refers to the original Twitter endpoint that it supports, which is Followers List in this case. On this particular API, the Twitter documentation states that either user_id or screen_name is required. The library can't support more than is available.
That said, you'll have to look at what's available and can sometimes accomplish your goal. i.e. There are also Social Graph queries that are very efficient because they return User IDs. With those User IDs, you can do a UserType.Lookup query to gather multiple users at a time. Here are a few links for UserType.Lookup queries:
Get all followers using LINQ to Twitter
How to get tweets from a multiple of friends?
I am trying to access data remotely from sharepoint 2010 site using client object model. For some restrictions I am not able to use CAML query even if I use I am not able to filter for proper audiences based on user login (if you can help me regarding the CAML query is also fine :: i do not know how to get current user audience name and all audiences using CAML/client object model. This code sits on the mobile site and calling the share point site as shown in my code). This following code works good but not able to get the content from the webpart. Can someone help regarding this.
using (ClientContext ctx = new ClientContext("https://mysite.com/Pages/Default.aspx"))
{
ctx.ExecutingWebRequest += new EventHandler<WebRequestEventArgs> (clientContext_ExecutingWebRequest);
File home=ctx.Web.GetFileByServerRelativeUrl("/Student/Pages/default.aspx");
//get the web part manager
Microsoft.SharePoint.Client.WebParts.LimitedWebPartManager wpm = home.GetLimitedWebPartManager(Microsoft.SharePoint.Client.WebParts.PersonalizationScope.Shared);
IEnumerable<Microsoft.SharePoint.Client.WebParts.WebPartDefinition> wpds = null;
//create the LINQ query to get the web parts from
//the web part definition collection
wpds = ctx.LoadQuery(wpm.WebParts.Include(wp => wp.Id,wp => wp.WebPart));
//load the list of web parts
ctx.ExecuteQuery();
//enumerate the results
foreach (Microsoft.SharePoint.Client.WebParts.WebPartDefinition wpd in wpds)
{
string title= wpd.WebPart.Title;
Microsoft.SharePoint.Client.WebParts.WebPart wpart = wpd.WebPart;
????? How to render and receive the data (looking for the same data When you browse the site with the browser)
}
Code continues...
I am also struggling with this issue. It really looks like this is not possible with client object model. Actually i've asked it to some SharePoint staff member at Build Conference 2012.
But, with the SharePoint Designer it's actually possible to download the wanted WebPart. Fiddler may come handy to track down which service will deliver you the bits.
Take a look at this post here on SharePoint StackExchange
Unfortunately the post will not give you any concrete way to solve it.
Wish you good luck!