Yii2 RESTful 关系数据 [英] Yii2 RESTful relational data
问题描述
我在获取 Yii2 RESTful API 返回关系数据时遇到了一些问题.通过前端查看时，我可以正常工作，但我试图通过 API 获取相同的数据，但它的工作方式不同.
I am having some trouble getting the Yii2 RESTful API returning relational data. I have this working when viewed through the frontend but i am trying to get the same data through the API and its not working the same way.
表格country - PK 是population_idpopulation - 外键是 country.population_id
Tables
country - PK is population_id
population - Foreign Key is country.population_id
我收到此错误:
{ "success": false, "data": { "name": "Invalid Configuration","message": "\"query\" 属性必须是一个类的实例实现 QueryInterface 例如yii\db\Query 或其子类.",代码":0，类型":yii\base\InvalidConfigException"，文件":"C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\data\ActiveDataProvider.php",行":100，堆栈跟踪":[#0C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\data\BaseDataProvider.php(79):yii\data\ActiveDataProvider->prepareModels()", "#1C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\data\BaseDataProvider.php(92):yii\data\BaseDataProvider->prepare()", "#2C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\rest\Serializer.php(162):yii\data\BaseDataProvider->getModels()", "#3C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\rest\Serializer.php(131):yii\rest\Serializer->serializeDataProvider(Object(yii\data\ActiveDataProvider))",#4C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\rest\Controller.php(97):yii\rest\Serializer->serialize(Object(yii\data\ActiveDataProvider))",#5C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\rest\Controller.php(75):yii\rest\Controller->serializeData(Object(yii\data\ActiveDataProvider))",#6C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\base\Controller.php(153):yii\rest\Controller->afterAction(Object(yii\base\InlineAction),对象(yii\data\ActiveDataProvider))", "#7C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\base\Module.php(455):yii\base\Controller->runAction('index', Array)", "#8C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\web\Application.php(83):yii\base\Module->runAction('v1/country/inde...', Array)", "#9C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\base\Application.php(375):yii\web\Application->handleRequest(Object(yii\web\Request))", "#10C:\xampp\htdocs\AdvancedAPI\api\web\index.php(17):yii\base\Application->run()", "#11 {main}" ] } }
{ "success": false, "data": { "name": "Invalid Configuration", "message": "The \"query\" property must be an instance of a class that implements the QueryInterface e.g. yii\db\Query or its subclasses.", "code": 0, "type": "yii\base\InvalidConfigException", "file": "C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\data\ActiveDataProvider.php", "line": 100, "stack-trace": [ "#0 C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\data\BaseDataProvider.php(79): yii\data\ActiveDataProvider->prepareModels()", "#1 C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\data\BaseDataProvider.php(92): yii\data\BaseDataProvider->prepare()", "#2 C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\rest\Serializer.php(162): yii\data\BaseDataProvider->getModels()", "#3 C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\rest\Serializer.php(131): yii\rest\Serializer->serializeDataProvider(Object(yii\data\ActiveDataProvider))", "#4 C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\rest\Controller.php(97): yii\rest\Serializer->serialize(Object(yii\data\ActiveDataProvider))", "#5 C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\rest\Controller.php(75): yii\rest\Controller->serializeData(Object(yii\data\ActiveDataProvider))", "#6 C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\base\Controller.php(153): yii\rest\Controller->afterAction(Object(yii\base\InlineAction), Object(yii\data\ActiveDataProvider))", "#7 C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\base\Module.php(455): yii\base\Controller->runAction('index', Array)", "#8 C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\web\Application.php(83): yii\base\Module->runAction('v1/country/inde...', Array)", "#9 C:\xampp\htdocs\AdvancedAPI\vendor\yiisoft\yii2\base\Application.php(375): yii\web\Application->handleRequest(Object(yii\web\Request))", "#10 C:\xampp\htdocs\AdvancedAPI\api\web\index.php(17): yii\base\Application->run()", "#11 {main}" ] } }
模型(Country.php):
model (Country.php):
<?php
namespace api\modules\v1\models;
use \yii\db\ActiveRecord;
class Country extends ActiveRecord
{
public static function tableName()
{
return 'country';
}
public function getCountries()
{
//return $this->hasMany(Population::className(), ['population_id' => 'population_id']);
return $this->hasMany(Country::className(), ['population_id' => 'population_id']);
}
public function getPopulationNumber()
{
//return $this->hasOne(Country::className(), ['population_id' => 'population_id']);
return $this->hasOne(Population::className(), ['population_id' => 'population_id']);
}
}
模型(Population.php):
model (Population.php):
<?php
namespace api\modules\v1\models;
use \yii\db\ActiveRecord;
class Population extends ActiveRecord
{
/**
* @inheritdoc
*/
public static function tableName()
{
return 'population';
}
/**
* @inheritdoc
*/
public static function primaryKey()
{
return ['p_id'];
}
}
控制器(CountryController.php):
controller (CountryController.php):
<?php
namespace api\modules\v1\controllers;
use yii\rest\Controller;
use yii\data\ActiveDataProvider;
use api\modules\v1\models\Country;
class CountryController extends Controller
{
public function actionIndex()
{
$query = Country::find()->with('countries', 'populationNumber')->all();
//$query = Country::find();
return new ActiveDataProvider([
'query' => $query,
]);
}
}
推荐答案
您需要从查询中删除 all() 部分.所以代码应该是:
You need to remove all() part from your query. So the code should be:
<?php
namespace api\modules\v1\controllers;
use yii\rest\Controller;
use yii\data\ActiveDataProvider;
use api\modules\v1\models\Country;
class CountryController extends Controller
{
public function actionIndex()
{
$query = Country::find()->with('countries', 'populationNumber');
//$query = Country::find();
return new ActiveDataProvider([
'query' => $query,
]);
}
}
这篇关于Yii2 RESTful 关系数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
