YII进行数据增删改查分析

关于模型部分参考http://blog.csdn.net/buyingfei8888/article/details/40208729

控制器部分：

<?php
class GoodsController extends Controller{
function actionShow(){
$goods_model = Goods::model(); //简单查询可以通过模型里面静态方法来创建
$sql = "select goods_id,goods_name,goods_price,goods_create_time from {{goods}} limit 10";
$goods_infos = $goods_model ->findAllBySql($sql);//通过原生态sql进行查询，findALlBySql返回一个对象数组，
//                        var_dump($goods_infos);
//			foreach($goods_infos as $v){
//				echo $v ->goods_name ."<br />";
//			}
//                       exit();
$this->render('show',array("goods_infos"=>$goods_infos)); //这种方式会渲染布局
//$this->renderPartial('add',array('goods_model' => $goods_model)); //这种方式不会渲染布局
}

function actionAdd(){
$goods_model = new Goods();
if(isset($_POST['Goods'])){
//                    $goods_model->goods_name = 'apple phone';
//                    $goods_model->goods_price = '5199';
//                    $goods_model->goods_weight=102;
//对上面代码优化
foreach($_POST['Goods'] as $_k => $_v){
$goods_model -> $_k = $_v;
}
}
if($goods_model->save()){
$this ->redirect('./index.php?r=houtai/goods/show');
}else{
echo "error";
}
//                    $this->renderPartial('add',array('goods_model' => $goods_model));
}

/*
* YII 对get优化，作为参数传递进来
* 模板和添加时模板基本一样，直接复制稍微修改就行，都是通过小物件 ，自动会把数据关联起来，节省开发成本
*/
function actionUpdate($id){
//除了添加数据进行 new Goods()， 别的都是调用静态方法 调用save方法执行是insert
// Goods：：model（）调用save方法执行是update
$goods_model =  Goods::model();
$goods_info = $goods_model ->findByPk($id);  //$goods_info 是 数据模型对象
if(isset($_POST['Goods'])){
foreach($_POST['Goods'] as $_k => $_v){
$goods_info -> $_k  = $_v;
}

if($goods_info -> save()){
$this ->redirect('./index.php?r=houtai/goods/show');
}
}
$this->renderPartial('update',array('goods_model' => $goods_info ));
}
function actionDel($id){
//根据$id获得被删除数据对象，通过该对象调用delete方法就ok
$goods_mode = Goods::model();
$goods_info = $goods_mode ->findByPk($id); //获得被删除商品模型对象
if($goods_info ->delete() ){
$this ->redirect('./index.php?r=houtai/goods/show');
}else{
echo 'error';
}

}
function actionJia(){
$goods_model = new Goods();
//                    $goods_model=Goods::model();
$goods_model->goods_name = 'apple phone';
$goods_model->goods_price = '5199';
$goods_model->goods_weight=102;
var_dump($goods_model->save());
// var_dump($goods_model);
if($goods_model->save()){
echo 'success';
}else{
echo "error";
}

}
}
?>

通过这个url（http://localhost/shop/index.php?r=houtai/goods/show）show视图：

部分源码：

<table class="table_a" border="1" width="100%">
<tbody><tr style="font-weight: bold;">
<td>序号</td>
<td>商品名称</td>
<td>库存</td>
<td>价格</td>
<td>图片</td>
<td>缩略图</td>
<td>品牌</td>
<td>创建时间</td>
<td align="center">操作</td>
</tr>
<?php
$i=1;
foreach($goods_infos as $_v){
?>
<tr id="product1">
<td><?php echo $i++;?></td>
<td><a href="#">苹果（APPLE）iPhone 4S<?php echo $_v->goods_name;?></a></td>
<td><?php echo $_v->goods_number;?></td>
<td><?php echo $_v->goods_price ;?></td>
<td><img src="<?PHP ECHO HOUTAI_IMG_URL ;?><?php  echo $_v->goods_big_img;?>" height="60" width="60"></td>
<td><img src="<?PHP ECHO HOUTAI_IMG_URL ;?><?php echo $_v->goods_small_img;?>" height="40" width="40"></td>
<td><?php echo $_v->goods_brand_id;?></td>
<td><?php echo $_v->goods_create_time;?></td>
<td><a href="./index.php?r=houtai/goods/update&id=<?php echo $_v->goods_id;?>">修改</a></td>
<!--                        <td><a href="./index.php?r=houtai/goods/update&id=<?php// echo $_v->goods_id;?>&name=test">修改</a></td>-->
<td><a href="./index.php?r=houtai/goods/del&id=<?php echo $_v->goods_id;?> "> 删除</a></td>
</tr>
<?php

}
?>

<tr>
<td colspan="20" style="text-align: center;">
[1]
</td>
</tr>
</tbody>
</table>

add模板部分源码：

<?php $form =  $this ->  beginWidget("CActiveForm");?>
<!-- 调用了  CActiveForm 类
怎样查找CActiveForm类，在\framework\yiilite.php 里查找，这个文件10000多行，可见yii核心代码就是这么多行
通过这个在找到 CActiveForm所在文件   CActiveForm.php包含了很多方法。就是对表单元素操作
-->
<table border="1" width="100%" class="table_a">
<tr>
<!--                    <td>商品名称</td>-->
<!--                    <td><input type="text" name="f_goods_name" /></td>-->
<td><?php echo $form->labelEx($goods_model,'goods_name');?></td>
<td><?php echo $form -> textField($goods_model,'goods_name');?></td>
</tr>
<tr>

<td><?php echo $form->labelEx($goods_model,'goods_weight');?></td>
<td> <?php echo $form -> textField($goods_model,'goods_weight');?></td>
</tr>
<tr>

<td><?php echo $form->labelEx($goods_model,'goods_price');?></td>
<td> <?php echo $form -> textField($goods_model,'goods_price');?></td>
</tr>
<tr>

<td><?php echo $form->labelEx($goods_model,'goods_number');?></td>
<td> <?php echo $form -> textField($goods_model,'goods_number');?></td>
</tr>
<tr>

<td><?php echo $form->labelEx($goods_model,'goods_category_id');?></td>
<td> <?php echo $form -> textField($goods_model,'goods_category_id');?></td>
</tr>
<tr>

<td><?php echo $form->labelEx($goods_model,'goods_brand_id');?></td>
<td><?php echo $form -> textField($goods_model,'goods_brand_id');?></td>
</tr>
<tr>

<td><?php echo $form->labelEx($goods_model,'goods_introduce');?></td>
<td><?php echo $form -> textArea($goods_model,'goods_introduce',array('cols' => 20,"rows" => 5));?></td>
</tr>
</table>
<td colspan="2" align="center">
<input type="submit" value="添加">
</td>
<?php $this->endWidget();?>

修改和上面基本相同：

<?php $form =  $this ->  beginWidget("CActiveForm");?>
<!-- 调用了  CActiveForm 类
怎样查找CActiveForm类，在\framework\yiilite.php 里查找，这个文件10000多行，可见yii核心代码就是这么多行
通过这个在找到 CActiveForm所在文件   CActiveForm.php包含了很多方法。就是对表单元素操作
-->
<table border="1" width="100%" class="table_a">
<tr>
<!--                    <td>商品名称</td>-->
<!--                    <td><input type="text" name="f_goods_name" /></td>-->
<td><?php echo $form->labelEx($goods_model,'goods_name');?></td>
<td><?php echo $form -> textField($goods_model,'goods_name');?></td>
</tr>
<tr>

<td><?php echo $form->labelEx($goods_model,'goods_weight');?></td>
<td> <?php echo $form -> textField($goods_model,'goods_weight');?></td>
</tr>
<tr>

<td><?php echo $form->labelEx($goods_model,'goods_price');?></td>
<td> <?php echo $form -> textField($goods_model,'goods_price');?></td>
</tr>
<tr>

<td><?php echo $form->labelEx($goods_model,'goods_number');?></td>
<td> <?php echo $form -> textField($goods_model,'goods_number');?></td>
</tr>
<tr>

<td><?php echo $form->labelEx($goods_model,'goods_category_id');?></td>
<td> <?php echo $form -> textField($goods_model,'goods_category_id');?></td>
</tr>
<tr>

<td><?php echo $form->labelEx($goods_model,'goods_brand_id');?></td>
<td><?php echo $form -> textField($goods_model,'goods_brand_id');?></td>
</tr>
<tr>

<td><?php echo $form->labelEx($goods_model,'goods_introduce');?></td>
<td><?php echo $form -> textArea($goods_model,'goods_introduce',array('cols' => 20,"rows" => 5));?></td>
</tr>
</table>
<td colspan="2" align="center">
<input type="submit" value="修改">
</td>
<?php $this->endWidget();?>

关于为什么Goods：：model()和new  Goods() 执行save方法会分别调用update 和insert方法可以看CActiveRecord 源码。