GridView 下拉搜索

/**
 *  下拉筛选
 *  @column string 字段
 *  @value mix 字段对应的值，不指定则返回字段数组
 *  @return mix 返回某个值或者数组
 */
public static function dropDown ($column, $value = null)
{
    $dropDownList = [
        "is_delete"=> [
            "0"=>"显示",
            "1"=>"删除",
        ],
        "is_hot"=> [
            "0"=>"否",
            "1"=>"是",
        ],
        //有新的字段要实现下拉规则，可像上面这样进行添加
        // ......
    ];
    //根据具体值显示对应的值
    if ($value !== null) 
        return array_key_exists($column, $dropDownList) ? $dropDownList[$column][$value] : false;
    //返回关联数组，用户下拉的filter实现
    else
        return array_key_exists($column, $dropDownList) ? $dropDownList[$column] : false;
}

然后我们上代码看看具体怎么实现的下拉搜索

<?= GridView::widget([
    "dataProvider" => $dataProvider,
    "columns" => [
        // ......
        [
            "attribute" => "is_hot",
            "value" => function ($model) {
                return Article::dropDown("is_hot", $model->is_hot);
            },
            "filter" => Article::dropDown("is_hot"),
        ],
        [
            "attribute" => "is_delete",
            "value" => function ($model) {
                return Article::dropDown("is_delete", $model->is_delete);
            },
            "filter" => Article::dropDown("is_delete"),
        ],
        // ......
    ],
]); ?>