Fan-Gate, Like-Gate, show-to-connections, with javascript and like box?

Question

I have a facebook likebox on my site (not an iframe app) where I need to create gated content. I understand the FB.Event.subscribe using edge.create and edge.remove but what I really need is to know if a user already likes the page not simply if they became a fan or stopped being a fan. Is there anything I can see as a callback maybe from the xfbml.render?

I am limited (by my company) to using front end languages, meaning javascript is really my only option at this point. I would gladly use the "signed_request" option but best I can tell that seems to be only accessible via server side languages.

Is there any way for me to determine whether someone already "Likes" a page using only javascript?

score 6 · Answer 1 · answered May 02 '11 at 01:29

Yes, you can do this completely in javascript using the FB Javascript sdk.

function RunLikeCheck() {
var likeId = 'yourLikeIdHere';
    FB.api({
        method: 'fql.query',
        query: 'SELECT uid FROM page_fan WHERE page_id = ' + likeId + ' AND uid = me()'
    },
                function (response) {

                    if (response.length == 1) {
                        $("#HasLiked").val('true');
                        $('#frmAllow').submit();
                    }
                    else {
                        $("#HasLiked").val('false');
                        $('#frmAllow').submit();
                    }
                }
            );
}

Now this is assuming that you already have the user logged in and have the correct permissions.

This is the only answer I've found where someone isnt logging in through your app. Thanks! Used this on a page tab and it worked great. Note that when using it for a tab use the page id, not the app id. — Nate914375, Feb 21 '14 at 00:11

score 0 · Answer 2 · answered Mar 01 '13 at 18:07

0

Here is some additional sample javascript code for implementing a like gate that does not require the FB.api call (but does require the user to re-like every time they visit the page).

http://linksy.me/viral-gate

answered Mar 01 '13 at 18:07

Adam Loving

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Fan-Gate, Like-Gate, show-to-connections, with javascript and like box?

2 Answers2

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