ActiveDataFilter 有谁有使用的案例教程吗？ - 问答

沃毕尼闷兜率 2019-11-07 09:22:06 1962次浏览 2条回答 0 悬赏 10 金钱

有老哥给个使用案例的链接吗？全网都搜不到怎么用？

墨轩娣回答于 2019-11-07 13:28 举报

https://api.zhangmoxuan.com/yii-data-arraydataprovider.html

$query = new Query;
$provider = new ArrayDataProvider([
    'allModels' => $query->from('post')->all(),
    'sort' => [
        'attributes' => ['id', 'username', 'email'],
    ],
    'pagination' => [
        'pageSize' => 10,
    ],
]);
// get the posts in the current page
$posts = $provider->getModels();

共 1 条回复

沃毕尼闷兜率回复于 2019-11-10 14:33 回复

老哥，是ActiveDataFilter的用法，不是array

蓝回答于 2019-11-07 16:44 举报

$filter = new ActiveDataFilter([
    'searchModel' => 'app\models\PostSearch'
]);

$filterCondition = null;

// 您可以从任何来源加载过滤器。例如：
// 如果你更喜欢请求体中的 JSON，
// 使用 Yii::$app->request->getBodyParams() 如下：
if ($filter->load(\Yii::$app->request->get())) { 
    $filterCondition = $filter->build();
    if ($filterCondition === false) {
        // Serializer would get errors out of it
        return $filter;
    }
}

$query = Post::find();
if ($filterCondition !== null) {
    $query->andWhere($filterCondition);
}

return new ActiveDataProvider([
    'query' => $query,
]);

来自权威指南 https://www.yiiframework.com/doc/guide/2.0/zh-cn/output-data-providers

共 2 条回复

沃毕尼闷兜率回复于 2019-11-10 14:32 回复

我感觉此处的ActiveDataFilter只起了一个模型的load作用，只是给query添加了一个where条件，最终还是交给了ActiveDataProvider，我感觉这个filter没啥作用，因为不用它的话，下面的代码也能实现：

public function search($params)
    {
        //params是get的参数
        $query = Post::find();

        $dataProvider = new ActiveDataProvider([
            'query' => $query,
        ]);
        $this->load($params);

        if (!$this->validate()) {
            return $dataProvider;
        }
        return $dataProvider;
    }

沃毕尼闷兜率回复于 2019-11-10 14:37 回复

gii自带的那套就已经有组装where条件的代码了,我随便找了一个表生成的代码案例

public function search($params)
    {
        $query = Bargain::find();

        // add conditions that should always apply here

        $dataProvider = new ActiveDataProvider([
            'query' => $query,
        ]);

        $this->load($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;
        }

        // grid filtering conditions
        $query->andFilterWhere([
            'id' => $this->id,
            'member_id' => $this->member_id,
            'sub_order_id' => $this->sub_order_id,
            'order_id' => $this->order_id,
            'rule_id' => $this->rule_id,
            'price' => $this->price,
            'balance' => $this->balance,
            'status' => $this->status,
            'task_status' => $this->task_status,
            'create_time' => $this->create_time,
            'modify_time' => $this->modify_time,
            'limit_time' => $this->limit_time,
            'finish_time' => $this->finish_time,
            'company_id' => $this->company_id,
            'self_balance' => $this->self_balance,
            'friends_balance' => $this->friends_balance,
        ]);

        $query->andFilterWhere(['like', 'address', $this->address])
            ->andFilterWhere(['like', 'bn', $this->bn])
            ->andFilterWhere(['like', 'sub_bn', $this->sub_bn])
            ->andFilterWhere(['like', 'cancel_reason', $this->cancel_reason]);

        return $dataProvider;
    }

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ActiveDataFilter 有谁有使用的案例教程吗？ [ 2.0 版本 ]

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