yii2实现数据分页

利用yii里面的yiidataPagination类分页

gii生成模型News;手动增加自定义需求函数

namespace appmodels;
use yiidbActiveRecord;

class News extends ActiveRecord{
	
	public static function tableName(){
		return "{{%news}}";
	}



    /**
    *@检查标题是否唯一
    */
	public static function ckunique($attribute,$value){
		$model =new News();
		$count=Static::find()->where("$attribute="$value"")->count();
		if($count){
			return true;
		}
	}

	/**
	 * @news与cate关联，获取关联cate信息
	 */

	 public function getCate(){
	 	return $this->hasOne(Cate::className(),["cid"=>"cid"]);
	 }
}

namespace appcontrollers;
use Yii;
use yiiwebController;
<strong>use yiidataPagination;</strong>
use appModelsNews;
use appModelscate;
use appmodelsNewForm;
use yiiwebNotFoundHttpException;
use yiiwebResponse;


class NewsController extends controller{

	
	public function actionIndex(){
		$model = new News();//实例化模型

        
		$arr=$model->find()->asArray()->limit(10)->all();<span style="font-family: Arial, Helvetica, sans-serif;">//将AR查询结果保存为数组</span>
		$count=$model->find()->count();
		$page=new Pagination(["defaultPageSize"=>10,"totalCount"=>$count]);
                $data=$model->find()->orderBy("id")->offset($page->offset)->limit($page->limit)->all();
           return $this->render("index",["page"=>$page,"data"=>$data]);
  
	}



	function actionError(){
		throw new yiiwebErrorAction;
	}

	function actionShow($id){
		$this->layout="@app/views/layouts/main.php";//定义指定的lauout文件
		$model=new News();
		$data=$model::findOne($id);//另一种方法实现包含cate，$data=News::find()->joinWith("cate")->where(["id"=>$id])->one();
                $cate=$data->cate;//通过hasOne关联，获取cate属性也可以通过$data->getCate()-all()获取;

		return $this->render("show",["cate"=>$data->cate->cate,"data"=>$data]);
		
	}

	function actionForm(){
		$model=new NewForm();
		if($model->load(Yii::$app->request->post()) && $model->validate()){
		   $obj=Yii::$app->request->post("NewForm");

		   $this->p($obj);
		}else{
			return $this->render("form",["model"=>$model]);
		}
		
	}

	function actionCate($id){
		
		$data= Cate::find()->where(["cid" =>$id])->one();

		if(false==$data){
			throw new NotFoundHttpException(404);
			exit(0);
		}

		

		//利用respnse，发送utf-8格式的网页

         /*$headers=Yii::$app->response->headers;
 		 $headers->add("Content-type","text/html;charset=utf-8");
 		 print_r($data->news);*/
 		 

        //利用response，发送json格式数据
		
        $response=Yii::$app->response;
        $response->format=Response::FORMAT_JSON;
        $response->data=$data->news;

	}
}