Question

我在Laravel 5中建立一个友谊系统，要求用户接受与另一个用户的潜在友谊。

我已经在用户和＆＃34;帮助者＆＃34;之间建立了多对多的关系。（其他用户）。关系看起来像这样：

// Accepted Friendships
function friendsOfMine()
{
  return $this->belongsToMany('App\User', 'helpers', 'user_id', 'helper_id')
    ->wherePivot('accepted', '=', 1);
}

// Potential Friendships
function potentialFriendsOfMine()
{
  return $this->belongsToMany('App\User', 'helpers', 'user_id', 'helper_id')
    ->wherePivot('accepted', '=', 0);
}

他们之间的唯一区别是我的帮助＆＃34;＆＃34;数据透视表：＆＃34;接受。＆＃34; ＆＃34;接受＆＃34;是一个默认为0的布尔值。

我在用户首次提出友谊时创建表格行，然后在接受友谊时更新该行。这是我的控制器的一个版本，它将两个动作压缩成一个代码块：

public function store()
{
    $currentUser = Auth::user();
    $input = Input::get('helper_id');
    $helper = User::find($input);

    /* Creates "unaccepted" relationship */
    $currentUser->friendsOfMine()->attach($helper);

    /* Fetches newly created relationship */
    $accepted = $currentUser->potentialFriendsOfMine()->where('helper_id', $input);

    /* Updates "accepted" column and saves */
    $accepted->pivot->accepted = 1;
    $accepted->pivot->save();
    Flash::success('You are now following this user.');
    return Redirect::back();
}

但是，我在这一行收到错误 - $accepted->pivot->accepted = 1; - 其中包含：从空值创建默认对象。

在这种情况下，我如何访问和更新刚创建的数据透视表记录中的值？

Answer 1

这一行： ->get()返回一个Builder对象。我认为您忘记在最后添加model以获取$accepted = $currentUser->potentialFriendsOfMine()->where('helper_id', $input)->get();对象。换句话说：

$accepted = $currentUser->potentialFriendsOfMine()->where('helper_id', $input)->first();

OR

Session.set('authCode',null);
Session.set('profile',null);
Template.home.events({
    'click .viewLinkedinProfileButton' :function(event, template){
        var redirect_uri = encodeURIComponent(Meteor.absoluteUrl('userAuthComplete'));
        var client_id='XXXXXXX';
        var state = 'myRandomString';
        var scope = ['r_basicprofile'];
        var url = "https://www.linkedin.com/uas/oauth2/authorization?response_type=code&client_id="+client_id+"&redirect_uri="+redirect_uri+"&state="+state+"&scope=r_basicprofile";

        showPopup(url,function(err){
            if(err){
                console.log("Cancelled "+err);
            }
            else{
                Meteor.call('getAccessToken',Session.get('authCode'),function(err,res){
                    if(res){
                        console.log(res);
                        Session.set('profile',res);
                    }
                });
                Session.set('authCode',null);
            }
        })
    }
});

function showPopup(url, callback, dimensions) {
    // default dimensions that worked well for facebook and google
    var popup = openCenteredPopup(
        url,
        (dimensions && dimensions.width) || 650,
        (dimensions && dimensions.height) || 331
    );

    var checkPopupOpen = setInterval(function() {
        try {
            var popupClosed = popup.closed || popup.closed === undefined;
        } catch (e) {
            return;
        }

        if (popupClosed) {
            var url = popup.document.URL;
            if(url.toLowerCase().indexOf('code') !== -1){
                var array1 = url.split('code=');
                var array2 =array1[1].split('&');
                Session.set('authCode',array2[0]);
                clearInterval(checkPopupOpen);
                callback();
            }
            else{
                clearInterval(checkPopupOpen);
            }
        }
    }, 50);
}

function openCenteredPopup(url, width, height) {
    var screenX = typeof window.screenX !== 'undefined'
        ? window.screenX : window.screenLeft;
    var screenY = typeof window.screenY !== 'undefined'
        ? window.screenY : window.screenTop;
    var outerWidth = typeof window.outerWidth !== 'undefined'
        ? window.outerWidth : document.body.clientWidth;
    var outerHeight = typeof window.outerHeight !== 'undefined'
        ? window.outerHeight : (document.body.clientHeight - 22);
    var left = screenX + (outerWidth - width) / 2;
    var top = screenY + (outerHeight - height) / 2;
    var features = ('width=' + width + ',height=' + height +
    ',left=' + left + ',top=' + top + ',scrollbars=yes');

    var newwindow = window.open(url, 'Login', features);
    if (newwindow.focus)
        newwindow.focus();
    return newwindow;
}


Template.home.helpers({
   profile:function(){
       return Session.get('profile');
   }
});

在Laravel 5

1 个答案: