V1.12

完成前台首页标签云的实现

Author: michaelweixi

common/models/Tag.php

@@ -115,6 +115,31 @@ public static function updateFrequency($oldTags,$newTags)
     	}
     }
 
- 
+
+    public static function findTagWeights($limit=20)
+    {
+    	$tag_size_level = 5;
+    	 
+    	$models=Tag::find()->orderBy('frequency desc')->limit($limit)->all();
+    	$total=Tag::find()->limit($limit)->count();
+    	 
+    	$stepper=ceil($total/$tag_size_level);
+    	 
+    	$tags=array();
+    	$counter=1;
+    	 
+    	if($total>0)
+    	{
+    		foreach ($models as $model)
+    		{
+    			$weight=ceil($counter/$stepper)+1;
+    			$tags[$model->name]=$weight;
+    			$counter++;
+    		}
+    		ksort($tags);
+    	}
+    	return $tags;
+    }
+    
 
 }

database/README.md

@@ -22,4 +22,6 @@
 
 源码版本:V1.10 ————— SQL文件版本:V1.4
 
-源码版本:V1.11 ————— 同上
+源码版本:V1.11 ————— 同上
+
+源码版本:V1.12 ————— 同上

frontend/components/TagsCloudWidget.php

@@ -0,0 +1,45 @@
+<?php
+namespace frontend\components;
+
+use yii\base\Widget;
+use yii\helpers\Html;
+
+class TagsCloudWidget extends Widget
+{
+	public $tags;
+	
+	public function init()
+	{
+		parent::init();
+	}
+	
+	public function run()
+	{
+		$tagString='';
+		$fontStyle=array("6"=>"danger",
+				"5"=>"info",
+				"4"=>"warning",
+				"3"=>"primary",
+				"2"=>"success",
+		);
+		
+		foreach ($this->tags as $tag=>$weight)
+		{
+			$tagString.='<a href="'.\Yii::$app->homeUrl.'?r=post/index&PostSearch[tags]='
+					.$tag.'">'.
+					' <h'.$weight.' style="display:inline-block;"><span class="label label-'
+					.$fontStyle[$weight].'">'.$tag.'</span></h'.$weight.'></a>';
+		}
+		return $tagString;
+		
+	}
+	
+	
+	
+	
+	
+	
+	
+	
+	
+}

frontend/controllers/PostController.php

@@ -9,6 +9,8 @@
 use yii\web\NotFoundHttpException;
 use yii\filters\VerbFilter;
 
+use common\models\Tag;
+
 /**
  * PostController implements the CRUD actions for Post model.
  */
@@ -35,15 +37,19 @@ public function behaviors()
      */
     public function actionIndex()
     {
-        $searchModel = new PostSearch();
-        $dataProvider = $searchModel->search(Yii::$app->request->queryParams);
-
-        return $this->render('index', [
-            'searchModel' => $searchModel,
-            'dataProvider' => $dataProvider,
-        ]);
+    	$tags=Tag::findTagWeights();
+    	 
+    	$searchModel = new PostSearch();
+    	$dataProvider = $searchModel->search(Yii::$app->request->queryParams);
+    
+    	return $this->render('index', [
+    			'searchModel' => $searchModel,
+    			'dataProvider' => $dataProvider,
+    			'tags'=>$tags,
+    	]);
     }
-
+    
+    
     /**
      * Displays a single Post model.
      * @param integer $id

frontend/views/post/index.php

@@ -3,6 +3,7 @@
 use yii\helpers\Html;
 use yii\grid\GridView;
 use yii\widgets\ListView;
+use frontend\components\TagsCloudWidget;
 
 /* @var $this yii\web\View */
 /* @var $searchModel common\models\PostSearch */
@@ -60,7 +61,9 @@
 				  <li class="list-group-item">
 				  <span class="glyphicon glyphicon-tags" aria-hidden="true"></span> 标签云
 				  </li>
-				  <li class="list-group-item">标签云</li>
+				  <li class="list-group-item">
+				  <?= TagsCloudWidget::widget(['tags'=>$tags])?>
+				   </li>
 				</ul>			
 			</div>