Yii 1.1 relationship search issue - yii

Question

1. Table meeting
Model name CoreMeeting
Fields id, title, start time, created_by
Relationship:
'MeetingParticipants' => array(self::HAS_MANY, 'MeetingParticipants', 'meeting_id'),
2. Table core_meeting_participant
Model name is meeting_participant
Fields are id, meeting_id, participant_id, group_id
Relationship:
'meeting' => array(self::BELONGS_TO, 'CoreMeeting', 'meeting_id'),
'group' => array(self::BELONGS_TO, 'MeetingGroup', 'group_id'),
3. Table core_meeting_group
Model name is MeetingGroup
Fields are id, group_name
My search filter in the meeting model is:
public function search()
{
$group=filter_var($_REQUEST['group'], FILTER_SANITIZE_STRING);//contain group name
$criteria=new CDbCriteria;
$user_id = Yii::app()->user->id;
$criteria->compare('id',$this->id);
$criteria->compare('title',$this->title,true);
$criteria->with=array('MeetingParticipants'=>array("select"=>"*"),'MeetingParticipants.group'=>array('select'=>'id,group_name'));
if(isset($this->start_time) && !empty($this->start_time))
$criteria->compare('start_time',date("Y-m-d", strtotime($this->start_time)), true);
$criteria->compare('created_by',$user_id);
if(isset($group)&&!empty($group))
$criteria->compare('group.group_name',$group);
$criteria->together = true;
return new CActiveDataProvider($this, array(
'criteria'=>$criteria,
));
}
I have created 4 meetings, each meeting have at least 5 participants each participant belongs to a meeting group. I want to list all meetings with the following filed meeting title, groups and meeting time.
My problem is if I enable $criteria->together = true; if the meeting has more than 10 participants that will show only 1 meeting in grid view. If I disable this that will show all but I can't search with the meeting name.
SQL fiddle link is http://sqlfiddle.com/#!9/fdaacf
full SQL dump https://pastebin.com/NtpMuCpE

Answer 1

Documentation for CDbCriteria->together property:
https://www.yiiframework.com/doc/api/1.1/CDbCriteria#together-detail
Whether the foreign tables should be joined with the primary table in a single SQL. This property is only used in relational AR queries for HAS_MANY and MANY_MANY relations.
As I can see your relation in CoreMeeting model:
'group' => array(self::BELONGS_TO, 'MeetingGroup', 'group_id')
Obviously you are trying to fetch one-to-one (BELONGS_TO) relation CoreMeeting -> MeetingGroup eagerly by globally setting to your CDbCriteria->together = true; which is not correct according to the documentation.
What I would suggest you, first of all get rid of this global together setting to CDbCriteria and try changing your with clause like this:
$criteria->with = [
// this is your has-many relation (one meeting has several participants), thus we set here `together` to true
'MeetingParticipants' => [
'together' => true,
'with' => [
// this is your one-to-one relation (one participant has one group)
'group'
]
]
];