My mistake was that i put % symbol in query and also quotes around parameter. It was necessary to put it in value, that is inserted instead of parameter.
So my initial code should be fixed like this:
$results = Task::model()->findAll('title like :tt', array(':tt'=>'%'.$term.'%'));
It is right form of findAll call according with yii documentation and link that Da:Sourcerer provided.
Hi I will post the some example i hope it’s may be someone help in feauture.
<?php
$c = new CDbCriteria();
Hoge::model()->findAll($c);
// SELECT * FROM `hoge` `t`
$c = new CDbCriteria();
$c->addSearchCondition('t.fuga', null); // null, false, ''などは無視されるようです
Hoge::model()->findAll($c);
// SELECT * FROM `hoge` `t`
$c = new CDbCriteria();
$c->addSearchCondition('t.fuga', 'a');
Hoge::model()->findAll($c);
// SELECT * FROM `hoge` `t` WHERE t.fuga LIKE :ycp0. Bound with :ycp0='%a%'
$c = new CDbCriteria();
$c->addSearchCondition('t.fuga', 'a%', false);
Hoge::model()->findAll($c);
// SELECT * FROM `hoge` `t` WHERE t.fuga LIKE :ycp0. Bound with :ycp0='a%'
$c = new CDbCriteria();
$c->addSearchCondition('t.fuga', 'a');
$c->addSearchCondition('t.piyo', 'd');
Hoge::model()->findAll($c);
// SELECT * FROM `hoge` `t` WHERE (t.fuga LIKE :ycp0) AND (t.piyo LIKE :ycp1). Bound with :ycp0='%a%', :ycp1='%d%'
$c = new CDbCriteria();
$c->addSearchCondition('t.fuga', 'a', true, 'OR');
$c->addSearchCondition('t.piyo', 'd', true, 'OR');
Hoge::model()->findAll($c);
// SELECT * FROM `hoge` `t` WHERE (t.fuga LIKE :ycp0) OR (t.piyo LIKE :ycp1). Bound with :ycp0='%a%', :ycp1='%d%'
$c = new CDbCriteria();
$c->compare('t.fuga', 'a', true, 'OR');
$c->compare('t.piyo', 'b', true, 'OR');
Hoge::model()->findAll($c);
// SELECT * FROM `hoge` `t` WHERE (t.fuga LIKE :ycp0) OR (t.piyo LIKE :ycp1). Bound with :ycp0='%a%', :ycp1='%b%'
Hoge::model()->findAll('t.fuga LIKE :fuga', array(':fuga' => '%a%'));
// SELECT * FROM `hoge` `t` WHERE t.fuga LIKE :fuga. Bound with :fuga='%a%'
Hoge::model()->findAll(array(
'condition' => 't.fuga LIKE :fuga',
'params' => array(':fuga' => '%a%'),
));
// SELECT * FROM `hoge` `t` WHERE t.fuga LIKE :fuga. Bound with :fuga='%a%'
$c = new CDbCriteria();
$c->condition = 't.fuga LIKE :fuga';
$c->params = array(':fuga' => '%a%');
Hoge::model()->findAll($c);
// SELECT * FROM `hoge` `t` WHERE t.fuga LIKE :fuga. Bound with :fuga='%a%'