Counting records from related tables Gridview - php

Question

I have 3 tables named hostgroup, host and services.
I have a database like this for example.
Hostgroup:
id, name
1 GroupA
2 GroupB
Host:
id, name, hostgroup_id
1 HostA 1
2 HostB 1
3 HostC 2
4 HostD 2
5 HostE 2
//2 = critical, 1 = warning
Service:
id, host_id, state
1 1 2
2 1 2
3 2 1
4 2 1
5 3 2
The final table should be like this:
Name Total Hosts Total Critical Total Warning
GroupA 2 2 2
GroupB 3 1 0
I was able to do the 2nd column which is Total Hosts by adding this function on my Hostgroup model:
public function getHostcount()
{
return Host::find()->where(['hostgroup_id' => $this->id])->count();
}
How can I count the total warning and critical also?
Total critical (counts the number of total critical status of hosts related to the hostgroup)
Total warning (counts the number of total warning status of hosts related to the hostgroup)
EDIT: ADDED SOURCE CODE
HostgroupSearch model:
<?php
class HostgroupSearch extends Hostgroup
{
public function rules()
{
return [
[['id', 'check_interval', 'retry_interval', 'max_check_attempts', 'timeout', 'freshness_threshold', 'is_auto_recovery', 'reflect_flg', 'created_user_id'], 'integer'],
[['object_name', 'name', 'name_search', 'remarks', 'snmp_community', 'timestamp'], 'safe'],
];
}
public function search($params)
{
$query = Hostgroup::find();
$dataProvider = new ActiveDataProvider([
'query' => $query,
]);
$this->load($params);
if (!$this->validate()) {
// uncomment the following line if you do not want to any records when validation fails
// $query->where('0=1');
return $dataProvider;
}
$query->andFilterWhere([
'id' => $this->id,
'check_interval' => $this->check_interval,
'retry_interval' => $this->retry_interval,
'max_check_attempts' => $this->max_check_attempts,
'timeout' => $this->timeout,
'freshness_threshold' => $this->freshness_threshold,
'is_auto_recovery' => $this->is_auto_recovery,
'reflect_flg' => $this->reflect_flg,
'created_user_id' => $this->created_user_id,
'timestamp' => $this->timestamp,
]);
$query->andFilterWhere(['like', 'object_name', $this->object_name])
->andFilterWhere(['like', 'name', $this->name])
->andFilterWhere(['like', 'name_search', $this->name_search])
->andFilterWhere(['like', 'remarks', $this->remarks])
->andFilterWhere(['like', 'snmp_community', $this->snmp_community]);
return $dataProvider;
}
}
This HostlistController controls the display of everything in my table.
<?
class HostlistController extends Controller
{
public $layout = "default";
public function actionIndex()
{
$searchModel = new HostgroupSearch();
$dataProvider = $searchModel->search(Yii::$app->request->queryParams);
return $this->render('index', [
'searchModel' => $searchModel,
'dataProvider' => $dataProvider,
]);
}
}
?>
This is then my view page index.php:
'columns' => [
[
'label' => 'Name',
'attribute' => 'name',
'format' => 'raw',
'value' => function ($data, $id) {
return Html::a($data->name, '/index.php/hostlistbygroup/'. $id);
},
],
[
'label' => 'Total Host',
'attribute' => 'hostcount',
],
[
'label' => 'Total Critical',
'attribute' => 'host.criticalcount',
],
[
'label' => 'Total Warning',
'attribute' => 'host.warningcount',
],

Answer 1

Nevermind. Solved it by adding these functions to Host model.
public function getCriticalcount()
{
return ServiceStatuses::find()->where(['host_id' => $this->id, 'last_hard_state' => '2'])->count();
}
public function getWarningcount()
{
return ServiceStatuses::find()->where(['host_id' => $this->id, 'last_hard_state' => '1'])->count();
}
and added this to Hostgroup model
public function getHost()
{
return $this->hasOne(Host::className(), ['hostgroup_id' => 'id']);
}
modified index.php with this
'columns' => [
[
'label' => 'Name',
'attribute' => 'name',
'format' => 'raw',
'value' => function ($data, $id) {
return Html::a($data->name, '/index.php/hostlistbygroup/'. $id);
},
],
[
'label' => 'Total Host',
'attribute' => 'hostcount',
],
[
'label' => 'Total Critical',
'attribute' => 'host.criticalcount',
],
[
'label' => 'Total Warning',
'attribute' => 'host.warningcount',
],