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Merge pull request #112 from iyuanc/patch-2

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Update output-data-providers.md
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崔亮
2018-11-20 16:12:38 +08:00
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docs/guide-zh-CN/output-data-providers.md
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@ -340,12 +340,12 @@ class CsvDataProvider extends BaseDataProvider
} }
``` ```
## Filtering Data Providers using Data Filters <span id="filtering-data-providers-using-data-filters"></span> ## 使用数据过滤器过滤数据提供者 <span id="filtering-data-providers-using-data-filters"></span>
While you can build conditions for active data provider manually as described in 虽然您可以手动为活动数据提供构建条件，
[Filtering Data](output-data-widgets.md#filtering-data) and [Separate Filter Form](output-data-widgets.md#separate-filter-form) 例如使用 [过滤数据](output-data-widgets.md#filtering-data) 和 [单独过滤表格](output-data-widgets.md#separate-filter-form) 数据小部件，
sections of data widgets guide, Yii has data filters that are very useful if you need flexible filter condtions. 但如果你需要灵活的过滤条件，Yii 的数据过滤器会非常有用。
Data filters could be used as follows: 以下是数据过滤器使用的方式：
```php ```php
$filter = new ActiveDataFilter([ $filter = new ActiveDataFilter([
@ -354,7 +354,7 @@ $filter = new ActiveDataFilter([
$filterCondition = null; $filterCondition = null;
// You may load filters from any source. For example, // 您可以从任何来源加载过滤器。例如：
// if you prefer JSON in request body, // if you prefer JSON in request body,
// use Yii::$app->request->getBodyParams() below: // use Yii::$app->request->getBodyParams() below:
if ($filter->load(\Yii::$app->request->get())) { if ($filter->load(\Yii::$app->request->get())) {
@ -375,7 +375,7 @@ return new ActiveDataProvider([
]); ]);
``` ```
`PostSearch` model serves the purpose of defining which properties and values are allowed for filtering: `PostSearch` 模型用于定义允许过滤的属性和值：
```php ```php
use yii\base\Model; use yii\base\Model;
@ -395,5 +395,5 @@ class PostSearch extends Model
} }
``` ```
Data filters are quite flexible. You may customize how conditions are built and which operators are allowed. 数据过滤器非常灵活。您可以自定义构建的条件以及允许的运算符。
For details check API docs on [[\yii\data\DataFilter]]. 更多的细节请查看 [[\yii\data\DataFilter]] 的 API 文档。