Question

我正在尝试在Player和Roleplay之间创建一个关系，并返回null。我知道它应该有效，因为下面的代码完美无缺：

Roleplay::find(Auth::user()->id);

并返回正确的数据，一整套正确的数据。

尝试以这种方式访问时：

Auth::user()->roleplay->user_id;

它不起作用，有人可以帮我找出原因吗？

你怎么知道它是空的？
因为刀片视图中的{{var_dump(Auth::user()->roleplay)}}会返回EMPTY

在使用视图时，我也会得到一个未定义的错误。角色扮演表（srp_user_statistics）的主键是user_id，播放器表（用户）的主键是id

这是代码：

Player:
<?php
namespace App\Database\Frontend\User;

use Hash;
use Eloquent;
use \Illuminate\Auth\Authenticatable;
use \Illuminate\Contracts\Auth\Authenticatable as Authentication;

class Player extends Eloquent implements Authentication
{
    use Authenticatable;

    protected $primaryKey   = 'id';
    protected $table        = 'users';
    public $timestamps      = false;
    protected $fillable     = [];

    public function setPasswordAttribute($value)
    {
        $this->attributes['password'] = Hash::make($value);
    }

    public function setUsernameAttribute($value)
    {
        return $this->attributes['username'] = $value;
    }

    public function roleplay()
    {
        return $this->hasOne('App\Database\Frontend\User\Roleplay', 'user_id');
    }
}

角色扮演：

use Eloquent;

class Roleplay extends Eloquent
{
    protected $primaryKey   = 'user_id';
    protected $table        = 'srp_user_statistics';
    public $timestamps      = true;
    protected $fillable     = [];

    public function user()
    {
        return $this->belongsTo('App\Database\Frontend\User\Player', 'user_id', 'id');
    }

    public function government_role()
    {
        return $this->belongsTo('App\Database\Frontend\Roleplay\GovernmentRole', 'government_id');
    }
}

Answer 1

我认为你应该添加＆＃39; id＆＃39;用户模型中的hasOne（）

Roleplay::find(Auth::user()->id);

并删除＆＃39; id＆＃39;来自角色扮演模型中的belonsTo（）。

旁注

这个工作

Roleplay::find(1); //$user->id returns an integer.

不保证您的关系设置正确。它只是

protected String doInBackground(Void... voids) {
        HttpClient httpclient = new DefaultHttpClient();
        HttpResponse response;
        String responseString = null;
        try {
            HttpPost post = new HttpPost(UrlRequest);
            Gson gson = new Gson();
            String jsonData = gson.toJson(_saleModel);                
            StringEntity entity = new StringEntity(jsonData);
            entity.setContentType("application/json");
            post.addHeader("Authorization", "bearer ".concat(mSession.getAccessToken()));
            post.setHeader("Accept", "application/json");
            post.setHeader("Content-Type", "application/json;charset=utf-8");
            post.setEntity(entity);
            response = httpclient.execute(post);
            StatusLine statusLine = response.getStatusLine();
            if(statusLine.getStatusCode() == HttpStatus.SC_OK){
                ByteArrayOutputStream out = new ByteArrayOutputStream();
                response.getEntity().writeTo(out);
                responseString = out.toString();
                out.close();
            } else{
                //Closes the connection.
                response.getEntity().getContent().close();
                throw new IOException(statusLine.getReasonPhrase());
            }
        } catch (ClientProtocolException e) {
            //TODO Handle problems..
            Log.e("Error", e.getMessage());
        } catch (IOException e) {
            //TODO Handle problems..
            Log.e("Error",e.getMessage());
        }

        return responseString;
    }

Laravel HasOne关系空洞

1 个答案: