Laravel在布尔值上调用成员函数addEagerConstraints（）

Question

I'm getting the following error whenever i go on to a users page, its supposed to show if the authenticated user is already following the user that the profile is on.

Could this be a problem with the relationship setup, it hasMany

Stack trace

local.ERROR: Call to a member function addEagerConstraints() on boolean {"userId":1,"email":"fakeemail@aol.com","exception":"[object] (Symfony\\Component\\Debug\\Exception\\FatalThrowableError(code: 0): Call to a member function addEagerConstraints() on boolean at /Applications/MAMP/htdocs/elipost/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Builder.php:522)"} []

UserController.php

public function getProfile($user)
{  
    $users = User::with([
        'posts.likes' => function($query) {
            $query->whereNull('deleted_at');
            $query->where('user_id', auth()->user()->id);
        },
        'follow',
        'follow.follower'
    ])->with(['followers' => function($query) {
        $query->with('follow.followedByMe');
        $query->where('user_id', auth()->user()->id);
    }])->where('name','=', $user)->get();

    $user = $users->map(function(User $myuser){
        return ['followedByMe' => $myuser->followers->count() == 0];
    });


    if (!$user) {
        return redirect('404');
    }

    return view ('profile')->with('user', $user);
}

MyFollow(model)

<?php

class MyFollow extends Model
{
    use SoftDeletes, CanFollow, CanBeFollowed;

    protected $fillable = [
        'user_id',
        'followable_id'
    ];

    public $timestamps = false;

    protected $table = 'followables';

    public function follower()
    {
        return $this->belongsTo('App\User', 'followable_id');
    }

    public function followedByMe()
    {
      return $this->follower->getKey() === auth()->id();
    }


}

MyFollow

use Overtrue\LaravelFollow\Traits\CanFollow;
use Overtrue\LaravelFollow\Traits\CanBeFollowed;

class MyFollow extends Model
{
    use SoftDeletes, CanFollow, CanBeFollowed;

    protected $fillable = [
        'user_id',
        'followable_id'
    ];

    public $timestamps = false;

    protected $table = 'followables';

    public function follower()
    {
        return $this->belongsTo('App\User', 'followable_id');
    }

    public function followedByMe()
    {
      return $this->follower->getKey() === auth()->id();
    }


}

Post

class Post extends Authenticatable
{


    protected $fillable = [
        'title',
        'body',
        'user_id',
        'created_at',

    ];


    public function user()
    {
        return $this->belongsTo(User::class);
    }

    public function comments()
    {
        return $this->hasMany('App\Comment');
    }

    public function likes()
    {
         return $this->hasMany('App\Like');
    }

    public function likedByMe()
    {
        foreach($this->likes as $like) {
            if ($like->user_id == auth()->id()){
                return true;
            }
        }
        return false;
    }






}

Likes

<?php

namespace App;

use App\Post;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class Like extends Model
{
    use SoftDeletes;

     protected $fillable = [
        'user_id',
        'post_id'
    ];



}

User(model)

class User extends Authenticatable
{
    use Notifiable,CanFollow, CanBeFollowed;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password',
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];


    public function posts()
    {
        return $this->hasMany(Post::class);

    }


    public function images()
    {
        return $this->hasMany(GalleryImage::class, 'user_id');

    }


    public function likes()
    {
        return $this->hasMany('App\Like');
    }

    public function follow()
    {   
        return $this->hasMany('App\MyFollow');
    }



    public function comments()
    {
        return $this->hasMany('App\Comment');
    }




}

Answer 1

As Jonas Staudenmeir stated, followedByMe isn't a relationship, it's a regular function and what it does is returning a boolean. I'm confused at why you've got a follow on your user model and trying to get information from the follow's follower? Just simplify, I see too much unneeded eager loading here.

Searching by indexed elements (id) > searching by name, any day of the week

Edit:

UserController

public function getProfile(Request $request, $id)
{  
    //$request->user() will get you the authenticated user
    $user = User::with(['posts.likes','followers','follows','followers.follows'])
    ->findOrFail($request->user()->id);
    //This returns the authenticated user's information posts, likes, followers, follows and who follows the followers 
    //If you wish to get someone else's information, you just switch 
    //the $request->user()->id to the $id if you're working with id's, if you're
    //working with names, you need to replace findOrFail($id) with ->where('name',$name')->get() and this will give you
    //a collection, not a single user as the findOrFail. You will need to add a ->first() to get the first user it finds in the collection it results of
    //If you're planning on getting an attribute (is_following = true) to know if
    //the authenticated user is following, you can use an accessor in the User model and write this after you've fetched the instance of the User
    //$user->append('is_following');
    return view ('profile')->with('user', $user);
}

User Model

//Accessor
//People who this user follows
public function getIsFollowingAttribute()
{   
    return MyFollow::where('followable_id',$this->attributes['id'])->where('user_id',Auth()->user()->id)->count() > 0 ? true : false;
}
//Relationships
//People who this user follows
public function follow()
{   
    return $this->hasMany('App\MyFollow','user_id','id');
}
//People who follows this user
public function followers()
{   
    return $this->hasMany('App\MyFollow','followable_id','id');
}
//Posts of this user
public function posts()
{   
    return $this->hasMany('App\Post','user_id','id');
}
//Likes of this user, not sure about this one tho, we're not using this for now but it could come in handy for you in the future
public function likes()
{   
    return $this->hasManyThrough('App\Likes','App\Post','user_id','user_id','id');
}

Post Model

//Who like this post
public function likes()
{   
    return $this->hasMany('App\Post','user_id','id');
}

MyFollow Model

//Relationships
//People who follow this user
public function followers()
{   
    return $this->hasMany('App\MyFollow','followable_id','user_id');
}
//Relationships
//People who this user follows
public function follow()
{   
    return $this->hasMany('App\MyFollow','user_id','followable_id');
}

Answer 2

With the help of @abr i found a simple fix, simple solution.

MyFollow.php(model)

public function followers()
{   
    return $this->hasMany('App\MyFollow','followable_id','user_id');
}
//Relationships
//People who this user follows
public function follow()
{   
    return $this->hasMany('App\MyFollow','user_id','followable_id');
}

User.php(model)

public function getIsFollowingAttribute()
{   
    return MyFollow::where('followable_id',$this->attributes['id'])->where('user_id',Auth()->user()->id)->count() > 0 ? true : false;
}


public function follow()
{   
    return $this->hasMany('App\MyFollow');
}

UserController.php

 public function getProfile($user)
    {  
        $users = User::with(['posts.likes' => function($query) {
                            $query->whereNull('deleted_at');
                            $query->where('user_id', auth()->user()->id);
                        }, 'followers','follow.followers'])

                        ->with(['followers' => function($query) {


                        }])->where('name','=', $user)->get();

        $user = $users->map(function(User $myuser){

            $myuser['followedByMe'] = $myuser->getIsFollowingAttribute();

            return $myuser;
        });


        if(!$user){
            return redirect('404');
        }

        return view ('profile')->with('user', $user);
    }

it works now. :)