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Yii框架常见问题汇总

Posted on 2013-03-26 21:46  Cure  阅读(...)  评论(...编辑  收藏

虽然用过Yii做了一个小项目了,但是过程中间解决的问题没有随手记下来,导致新项目开始后,以前碰到的问题还得在查一遍,干脆就记下来,以便不时之需。

有新的会随时更新。

1.如何显示ActiveRecord执行的sql语句

array(
'class'=>'CFileLogRoute',
'levels'=>'trace,error, warning',
),
// uncomment the following to show log messages on web pages
/*
array(
'class'=>'CWebLogRoute',
),
*/

在项目的config/main.php中,找到上面的代码段,添加trace,取消底下一段的注释

 

2.在生成的_search.php中,如何去掉必须输入项的 "*" 号:

   只需要加上一句代码:<?php CHtml::$afterRequiredLabel = '';?>

  

3.如何处理Model关联的对象为空的情况。

  例如:显示员工所属部门,使用TbDetailView时,

  'attributes'=>array(......

    array('label'=>'所属部门','value'=>!empty($model->department)?CHtml::encode($model->department->name) : '未设置'),

4.如何在下拉列表中显示“未选择”。

   <?php echo $form->dropDownListRow($model,'type',CHtml::listData(CodeType::model()->findAll(),'id','name'),array('prompt'=>'[未选择]')) ?>

5.如何在TbGridView中显示CStarRating控件:

<?php $this->widget('bootstrap.widgets.TbGridView',array(
'id'=>'program-grid',
'dataProvider'=>$model->search(),
'afterAjaxUpdate'=>'function(id,data){ $("[id^=\'rating\'] > input").rating({"required":true}); $("[id^=\'rating\'] > div").attr("disabled","disabled");  }', 
//'filter'=>$model,
'type'=>'striped bordered',
'columns'=>array(
        'id',
        'business_id',
        'business_name',
        'program_code.name::程序类型',
        'program_code1.name::开发语言',
         array('name'=>'level','type'=>'raw',
          'value'=>'$this->grid->controller->widget("CStarRating",
                                array("starCount"=>"5",
                                        "minRating"=>"1",
                                        "maxRating"=>"10",
                                        "allowEmpty"=>false, 
                                        "name"=>$data->id,
                                        "id"=>"rating_" .$data->id,"value"=>$data->level,
                                        
                                        ),true)',),
array(
'class'=>'bootstrap.widgets.TbButtonColumn',
),
),
)); ?>

 6.怎样在Grid中对外键关联的字段进行排序:

例如:Model名为Product,在Model里:

public function relations()
    {
        // NOTE: you may need to adjust the relation name and the related
        // class name for the relations automatically generated below.
        return array(
            'product_agent'=>array(self::BELONGS_TO,'Agent','manufacturer'),
        );
    }
public function search()
    {
        $criteria=new CDbCriteria;
        $criteria->with = array('product_agent');
        
        ...............

        return new CActiveDataProvider(get_class($this), array(
            'criteria'=>$criteria,
            'sort'=>array('attributes'=> array('id','register_date','product_name','manufacturer','product_agent.name','unit_price','library_count')),
        ));
    }

在页面里:

<?php $this->widget('zii.widgets.grid.CGridView', array(
    'id'=>'product-grid',
    'dataProvider'=>$model->search(),
    //'filter'=>$model,
    'columns'=>array(
        'id',
        
        'product_agent.name::生产厂商',

        array(
            'class'=>'CButtonColumn',
            'afterDelete'=>'function(link,success,data){if(data != "") alert(data);};'
        ),
    ),
)); ?>    

 

7.如何自定义验证:

比如,在出库时判断是否库存不足:

在model中:

public function rules()
    {
        // NOTE: you should only define rules for those attributes that
        // will receive user inputs.
        return array(
            .......
            array('quantity', 'quantityValidator'),
        );
    }
/*
    在库数的验证
    */
    public function quantityValidator($attribute,$params)
    {                
        if ( $this->quantity > $this->shipment_product->library_count ) {
            $this->addError('quantity', '库存不足!');
        }
    }

 

8.如何对一个Model中的日期字段按照一个指定范围进行查询:

在model里添加两个字段:

public $occurrence_date_start;
public $occurrence_date_end;

然后再search方法中:

public function search()
{
    $criteria=new CDbCriteria;

    $criteria->compare('id',$this->id);
    if((isset($this->occurrence_date_start) && trim($this->occurrence_date_start) != "")
        && (isset($this->occurrence_date_end) && trim($this->occurrence_date_end) != ""))
        $criteria->addBetweenCondition('occurrence_date', ''.$this->occurrence_date_start.'', ''.$this->occurrence_date_end.'');
        ......

    return new CActiveDataProvider(get_class($this), array(
            'criteria'=>$criteria,
            'sort'=>array('attributes'=>array('id','occurrence_date','shipment_customer.name','shipment_product.product_name','shipment_staff.name',
                    'shipment_code.code_name','quantity','total_amount','actual_back_section_date',)),
        ));
    }

在前台页面,我这里用的是Yii内置的CJuiDatePicker:

<div class="row">
        <?php echo $form->label($model,'occurrence_date_start'); ?>
        <?php $this->widget('zii.widgets.jui.CJuiDatePicker', array(
        'model'=>$model,
        'attribute'=>'occurrence_date_start',
        // additional javascript options for the date picker plugin
        'options'=>array(
            'showAnim'=>'fold',
            'showMonthAfterYear'=>'false',
        ),
        'htmlOptions'=>array(
            'style'=>'height:20px;',
        ),

        'language'=>'zh_cn',
        ));
        ?>
    </div>
    <div class="row">
        <?php echo $form->label($model,'occurrence_date_end'); ?>
        <?php $this->widget('zii.widgets.jui.CJuiDatePicker', array(
        'model'=>$model,
        'attribute'=>'occurrence_date_end',
        // additional javascript options for the date picker plugin
        'options'=>array(
            'showAnim'=>'fold',
            'showMonthAfterYear'=>'false',
        ),
        'htmlOptions'=>array(
            'style'=>'height:20px;',
        ),

        'language'=>'zh_cn',
    ));

 

 9.在使用ajaxButton时如何在controller中调用var_dump等来调试:

<?php echo CHtml::ajaxButton('保存', array('reviewd/create'),
array(//'success'=>'js:function(data){alert(123);}',        
'data'=>array('name'=>'...',
'department_id'=>'...'),
'type'=>'POST',
'update'=>'#review-d-form',
//'return'=>true,
)
,array('class'=>'btn btn-success btn-normal')
)?>

注释掉红色的部分。