Adding a condition to every query in a model - yii

Question

I have a system where all tables in the MySQL database are populated with external data (synchronized with another system every 5 minutes). All tables have a column DELFLAG which is used to mark disabled entries.
So I have about 15 AR models in Yii that are linked to those tables. Whenever I make a query, I need to add something like $criteria->addCondition('DELFLAG=0'). This gets ugly if there are multiple tables present in the query, as every one of them has the flag. Also, there's a potential for error if I forget one of those conditions.
Here's how I do it now:
public function search($showtype = NULL) {
$criteria=new CDbCriteria;
if (isset($showtype)) {
$criteria->with = array(
'TSSSHOW',
'TSSSHOW.TSSSHOWTYPEITEM',
'TSSSHOW.TSSSHOWTYPEITEM.TSSSHOWTYPE'
);
$criteria->compare('TSSSHOWTYPEITEM.TSSSHOWTYPEID', $showtype);
$criteria->addCondition('TSSSHOW.DELFLAG=0');
$criteria->addCondition('TSSSHOWTYPEITEM.DELFLAG=0');
}
$exp = new CDbExpression("`TSSEVENT_START_DATETIME` > NOW()");
$criteria->addCondition($exp);
$criteria->addCondition('t.DELFLAG=0');
$criteria->together = true;
$criteria->order = 't.TSSEVENT_START_DATETIME ASC';
return new CActiveDataProvider($this, array(
'criteria'=>$criteria,
'pagination' => array(
'pageSize' => 15,
),
));
}
Is there a convenient way to include this condition into every query that includes these tables? Perhaps a special class which my models shall descend from (as opposed to the default CActiveRecord)?

Answer 1

I'd suggest declaring named scope for these models:
public function scopes()
{
return array(
'disabledEntry'=>array(
'condition'=>'DELFLAG=1',
),
);
}
Using the named scope: Model::model()->disabledEntry()->findAll();
You can provide scope when relaring to model in the with() statement as well: ModelA::model()->with('model:disabledEntry')->findAll();
But if you have to set this condition each time, you may set defaultScope:
public function defaultScope()
{
return array(
'condition' => 'DELFLAG=0',
);
}
Thus, this model by default would have this condition.
Update: Since you have the identically named columns in several models, YII can have some column name ambiguity troubles while building sql-query. If it is the case, use alias in scope declaration or use the following statement to set current table alias explicitly while declaring scope 'condition' => $this->getTableAlias(false, false) . '.DELFLAG=0',

Answer 2

You can create Your own class e.g. CustomActiveRecord extends CActiveRecord
then You should override findAll, findByPk methods with your criteria..
Other solution is to run this query 'DELETE FROM table_name WHERE DELFLAG=1' after every import..