issue with Yii 2 framework - php

Question

I was trying to make a blog with YII2, my framework is confusing to call data from database.
For example when I call "username" from "user" table,
<?= DetailView::widget([
'model' => $model,
'attributes' => [
'user.fullname', --->> Yii2 is thinking that this is a category and not a user table
'title',
'description',
'content:html',
'count_view',
'status',
'created_at',
],
]) ?>
I am getting this error: -->> unknown property: app\models\Category::fullname
please could you help me to solve this issue, where I did make a mistake?
and here is my post model contains:
<?php
namespace app\models;
use Yii;
/**
* This is the model class for table "post".
*
* #property integer $id
* #property integer $user_id
* #property string $title
* #property string $description
* #property string $content
* #property integer $count_view
* #property string $status
* #property string $created_at
*
* #property User $user
* #property TagAssign[] $tagAssigns
*/
class Post extends \yii\db\ActiveRecord
{
/**
* #inheritdoc
*/
public static function tableName()
{
return 'post';
}
/**
* #inheritdoc
*/
public function rules()
{
return [
[['user_id', 'count_view','category_id'], 'integer'],
[['content', 'status'], 'string'],
[['created_at'], 'safe'],
[['count_view'], 'default','value'=>0],
[['user_id'], 'default','value'=>Yii::$app->user->id],
[['title', 'description'], 'string', 'max' => 255],
[['user_id'], 'exist', 'skipOnError' => true, 'targetClass' => User::className(), 'targetAttribute' => ['user_id' => 'id']],
];
}
/**
* #inheritdoc
*/
public function attributeLabels()
{
return [
'id' => 'ID',
'user_id' => 'User ID',
'title' => 'Title',
'description' => 'Description',
'content' => 'Content',
'category' => 'Category',
'count_view' => 'Count View',
'status' => 'Status',
'created_at' => 'Created At',
];
}
/**
* #return \yii\db\ActiveQuery
*/
public function getUser()
{
return $this->hasOne(Category::className(), ['id' => 'user_id']);
}
public function getCategory()
{
return $this->hasOne(User::className(), ['id' => 'category_id']);
}
/**
* #return \yii\db\ActiveQuery
*/
public function getTagAssigns()
{
return $this->hasMany(TagAssign::className(), ['post_id' => 'id']);
}
}
and here user Model:
<?php
namespace app\models;
use Yii;
use yii\web\IdentityInterface;
/**
* This is the model class for table "user".
*
* #property integer $id
* #property string $username
* #property string $password
* #property string $fullname
* #property string $status
* #property string $role
* #property string $created_At
*
* #property Post[] $posts
*/
class User extends \yii\db\ActiveRecord implements IdentityInterface
{
/**
* #inheritdoc
*/
public static function tableName()
{
return 'user';
}
public $current_password;
public $new_password;
public $confirm_password;
public $authKey;
/**
* #inheritdoc
*/
public function rules()
{
return [
[['status', 'role'], 'string'],
[['created_At'], 'safe'],
[['username', 'password', 'fullname'], 'string', 'max' => 45],
];
}
/**
* #inheritdoc
*/
public function attributeLabels()
{
return [
'id' => 'ID',
'username' => 'username',
'password' => 'password',
'fullname' => 'fullname',
'status' => 'Status',
'role' => 'Role',
'created_At' => 'Created At',
];
}
/**
* #return \yii\db\ActiveQuery
*/
public function getPosts()
{
return $this->hasMany(Post::className(), ['user_id' => 'id']);
}
public static function findIdentity($id)
{
return static::findOne($id);
}
public static function findIdentityByAccessToken($token,$type=null)
{
return static::findOne(['access_token'=>$token]);
}
public function getId()
{
return $this->id;
}
public function getAuthKey()
{
return $this->authKey;
}
public function validateAuthKey($authKey)
{
return $this->authKey == $authKey;
}
public static function findByUsername($username)
{
return static::findOne(['username'=>$username]);
}
public function validatePassword($password)
{
if(Yii::$app->security->validatePassword($password,$this->password))
{
return true;
} else {
return false;
}
}
}

Answer 1

Change to this in Post model.
public function getUser()
{
return $this->hasOne(User::className(), ['id' => 'category_id']);
}
public function getCategory()
{
return $this->hasOne(Category::className(), ['id' => 'user_id']);
}