<?php

namespace backend\models\search;

use common\models\Policy;
use yii\base\Model;
use yii\data\ActiveDataProvider;

/**
 * PolicySearch represents the model behind the search form about `common\models\Policy`.
 */
class PolicySearch extends Policy
{
    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [['id'], 'integer'],
            [['title', 'type', 'cengci', 'estate'], 'string'],
        ];
    }

    /**
     * {@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 = Policy::find();

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

        $this->load($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([
            'id' => $this->id,
            'estate' => $this->estate,
        ]);

        $query->andFilterWhere(['like', 'title', $this->title]);
        $query->andFilterWhere(['like', 'type', $this->type]);
        $query->andFilterWhere(['like', 'cengci', $this->cengci]);

        return $dataProvider;
    }
}