Laravel Eloquent 试图检索表中具有相同外键的所有答案

Question

我有一个项目，其中有 3 个表，一个问题表，一个答案表和一个用户表

在问题表中，我有以下内容：

 Schema::create('questions', function (Blueprint $table) {
            $table->id();
            $table->string('question');
            $table->timestamps();
        });

在用户表中，我有以下内容：

Schema::create('users', function (Blueprint $table) {
            $table->id();
            $table->string('name');
            $table->string('email')->unique();
            $table->timestamp('email_verified_at')->nullable();
            $table->string('password');
            $table->string('district')->nullable();
            $table->string('area')->nullable();
            $table->string('committee')->nullable();
            $table->string('position')->nullable();
            $table->rememberToken();
            $table->timestamps();
        });

在答案表中，我有以下内容：

Schema::create('answers', function (Blueprint $table) {
            $table->id();
            $table->unsignedBigInteger('user_id');
            $table->foreign('user_id')->references('id')->on('users');
            $table->unsignedBigInteger('question_id');
            $table->foreign('question_id')->references('id')->on('questions');
            $table->string('answer');
            $table->timestamps();
        });

这些是模型

class Answer extends Model
{
    public function user(){
      return $this->hasOne('App\User');
    }
    
    public function question(){
      return $this->hasOne('App\Question');
    }
}

class Question extends Model
{
    public function answer(){
      return $this->hasMany('App\Answer');
    }
}

class User extends Authenticatable
{
    use Notifiable;

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

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

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = [
        'email_verified_at' => 'datetime',
    ];

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

根据我的结构，答案表将包含由 user_id 和他对一个问题的回答组成的每一行的条目，在下一行中是另一个问题

如何检索表格中的数据，该表格在第一行显示用户在一列中，他的所有 4 个答案在以下 4 列中？

Answer 1

第一个Answer 模型应该是这样的。因为它是一对多的。

class Answer extends Model
{
    public function user(){
      return $this->belongsTo('App\User');
    }
    
    public function question(){
      return $this->belongsTo('App\Question');
    }
}

然后你可以得到这样的数据：

$results = User::with('answer')->first();
// this should give the first `user` with all the answers that belongs to the user.

$results = User::with('answer')->get();
// this should give you all the users.

假设您需要所有用户和所有答案。

foreach ($results as $user) {
    echo $user->name;
    
    foreach ($user->answer as $value) {
     echo $value->answer;
   }
}

如果有帮助，请告诉我。