我不明白 Yii2 中的过滤和排序如何与关系表一起工作。
我有 3 个表,因为链接可以有多个国家/地区。我想出了如何将其保存到 links_countries 表中。
Links Countries LinksCountries
link_id country link_id
country country
链接和国家/地区通过链接模型中的这种关系进行连接
public function getManyCountries()
{
return $this->hasMany(Countries::className(), ['country' => 'country'])->viaTable('links_countries', ['links_id' => 'links_id']);
}
在我的index.php GridView中
[
'label' => 'Countries',
'attribute' => 'linksCountries.country',
'value' => function ($model) {
$countries = ArrayHelper::map($model->manyCountries, 'country', 'country_name');
return implode(', ', $countries);
},
'format' => 'raw'
],
这会产生这样的网格
如您所见,ID 1034 的链接有多个国家/地区,但过滤器无法以这种方式工作。 那么如何显示这样的网格呢?
Link ID Country Link
1034 Andorra linkname1
1034 Kosovo linkname1
我尝试过这种关系
public function getLinksCountries()
{
return $this->hasMany(LinksCountries::className(), ['links_id' => 'links_id']);
}
在 LinksSearch 模型中
$dataProvider = new ActiveDataProvider([
//'query' => $query,
'query' => $this->getLinksCountries(),
]);
但似乎不起作用。
最佳答案
因此,解决方案是基于 LinksCountries 模型显示网格并从 Links 模型中获取值。
LinksCountries.php
<?php
namespace common\models;
use Yii;
class LinksCountries extends \yii\db\ActiveRecord
{
/**
* @inheritdoc
*/
public static function tableName()
{
return 'links_countries';
}
/**
* @inheritdoc
*/
public function rules()
{
return [
[['links_id', 'country'], 'required'],
[['links_id'], 'integer'],
[['modified_date', 'created_date'], 'safe'],
[['country'], 'string', 'max' => 3],
[['modified_by', 'created_by'], 'string', 'max' => 64]
];
}
/**
* @return \yii\db\ActiveQuery
*/
public function getManyCountries()
{
return $this->hasOne(Countries::className(), ['country' => 'country']);
}
/**
* @return \yii\db\ActiveQuery
*/
public function getLinks()
{
return $this->hasOne(Links::className(), ['links_id' => 'links_id']);
}
public function getCountryName() {
return $this->country->country_name;
}
public function getLinkName() {
return $this->links->link;
}
public function getShortDescription() {
return $this->links->short_description;
}
}
LinksCountriesSearch.php
<?php
namespace common\models;
use Yii;
use yii\base\Model;
use yii\data\ActiveDataProvider;
use common\models\LinksCountries;
class LinksCountriesSearch extends LinksCountries
{
public $linkName;
public $shortDescription;
public function rules()
{
return [
[['links_countries_id', 'links_id'], 'integer'],
[['country', 'modified_by', 'modified_date', 'created_by', 'created_date', 'linkName', 'shortDescription'], 'safe'],
];
}
/**
* @inheritdoc
*/
public function scenarios()
{
// bypass scenarios() implementation in the parent class
return Model::scenarios();
}
/**
* Creates data provider instance with search query applied
*
* @param array $params
*
* @return ActiveDataProvider
*/
public function search($params)
{
$query = LinksCountries::find();
$dataProvider = new ActiveDataProvider([
'query' => $query,
]);
$dataProvider->sort->attributes['linkName'] = [
'asc' => ['links.link' => SORT_ASC],
'desc' => ['links.link' => SORT_DESC],
];
$dataProvider->sort->attributes['shortDescription'] = [
'asc' => ['links.short_description' => SORT_ASC],
'desc' => ['links.short_description' => SORT_DESC],
];
$query->joinWith('links');
$query->joinWith('manyCountries');
$this->load($params);
if(!$this->validate()){
// uncomment the following line if you do not want to return any records when validation fails
// $query->where('0=1');
return $dataProvider;
}
$query->andFilterWhere([
'links_countries_id' => $this->links_countries_id,
'links.links_id' => $this->links_id,
'modified_date' => $this->modified_date,
'created_date' => $this->created_date,
]);
$query->andFilterWhere(['like', 'countries.country_name', $this->country])
->andFilterWhere(['ilike', 'links.link', $this->linkName])
->andFilterWhere(['ilike', 'links.short_description', $this->shortDescription])
->andFilterWhere(['like', 'modified_by', $this->modified_by])
->andFilterWhere(['like', 'created_by', $this->created_by]);
return $dataProvider;
}
}
index.php
use yii\helpers\ArrayHelper;
use common\models\Countries;
echo GridView::widget([
'dataProvider'=> $dataProvider,
'filterModel' => $searchModel,
'columns' => [
[
'attribute' => 'links_id',
'width'=>'50px',
],
[
'attribute' => 'country',
'value' => 'manyCountries.country_name',
'vAlign'=>'middle',
'width'=>'200px',
'filterType'=>GridView::FILTER_SELECT2,
'filter'=> ArrayHelper::map(Countries::find()->orderBy('country_name')->asArray()->all(), 'country_name', 'country_name'),
'filterWidgetOptions'=>[
'pluginOptions'=>['allowClear'=>true],
],
'filterInputOptions'=>['placeholder'=>'Select country'],
'format'=>'raw',
],
[
'attribute' => 'linkName',
'format' => 'raw',
'value' => function ($model) {
return Html::a($model->linkName, $model->linkName, ['target'=>'_blank']);
},
],
'shortDescription',
],
]);
关于gridview - Yii2 在 GridView 中使用 viaTable 关系进行排序和过滤,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34894966/