既に Facebook にログインしているユーザーがアカウントからアプリを削除した場合、ユーザーが既にログインしているため、アプリに再度アクセスしたときにのみ、publish_stream を要求するにはどうすればよいですか?
ありがとう。
    FB.getLoginStatus(function (response) {
            if (response.status === 'connected') {
                // the user is logged in and has authenticated your
                // app, and response.authResponse supplies
                // the user's ID, a valid access token, a signed
                // request, and the time the access token 
                // and signed request each expire
                uid = response.authResponse.userID;
                accesstoken = response.authResponse.accessToken;
                SrReferral = '@ViewBag.Referral';
                window.fbuserid = uid;
                var postData = { facebookUID: uid, facebookAccessTok: accesstoken, facebookSrReferral: SrReferral };
                $.ajax({
                    url: '@Url.Action("DisplayGolfers")',
                    type: 'POST',
                    data: postData,
                    dataType: 'html',
                    success: function (responseText) {
                        $("#container").html(responseText);
                    }
                });
            } else if (response.status === 'not_authorized') {
                // the user is logged in to Facebook, 
                // but has not authenticated your app 
            } else {
                // the user isn't logged in to Facebook.
                window.FB.login(function (response) {
                    if (response.authResponse) {
                        uid = response.authResponse.userID;
                        accesstoken = response.authResponse.accessToken;
                        SrReferral = '@ViewBag.Referral';
                        window.fbuserid = uid;
                        var postData = { facebookUID: uid, facebookAccessTok: accesstoken, facebookSrReferral: SrReferral };
                        $.ajax({
                            url: '@Url.Action("DisplayGolfers")',
                            type: 'POST',
                            data: postData,
                            dataType: 'html',
                            success: function (responseText) {
                                $("#container").html(responseText);
                            }
                        });
                    } else {
                        console.log('User cancelled login or did not fully authorize.');
                        alert('User cancelled login');
                    }
                }, { scope: 'publish_stream' });
            };
        });
    }