How to add validation rule to the second model's attribute in first model in Yii2

Yii 2.0 General Discussions
1

I am using Yii 2 basic application template. I have two models Attendancereport and Attendancereportdetails.

They are related to each other by one-to-many relation (meaning one Attendancereport can have many Attendancereportdetails)

I want to add a validation rule to second model’s attribute in the first model.

There is a attribute called Standard in the Attendancereportdetails. I need to add validation rule to this attribute in the Attendancereport model.

I am using dynamic form to capture the student attendance as shown in the image. I need to add a client side validation on the Standard field which belongs to the second model.

image
image1095×410 12.7 KB

First model : Attendancereport

<?php
namespace app\models;
use Yii;
class Attendancereport extends \yii\db\ActiveRecord
{
     public static function tableName()
    {
        return 'attendancereport';
    }
    public function rules()
    {
        return [
            [['AcademicYearId', 'ASCId', 'UserId', 'DateofReport'], 'required'],
            [['AcademicYearId', 'ASCId', 'UserId'], 'integer'],
            [['Standard'],'validatestandard'], // custom validation method for Standard attribute
        ];
    }

    public function attributeLabels()
    {
        return [
            'AttendanceReportId' => 'Attendance Report ID',
            'AcademicYearId' => 'Academic Year',
            'ASCId' => 'ASC Center',
            'UserId' => 'User',
            'DateofReport' => 'Date',

        ];
    }
  // This method will validate the Standard attribute
   public function validatestandard($attribute,$params,$validator)
	{
			if($this->Standard==1)
				$this->addError($attribute,"Incorrect");
	}

    public function getAcademicYear()
    {
        return $this->hasOne(Academicyear::className(), ['Id' => 'AcademicYearId']);
    }
    public function getASC()
    {
        return $this->hasOne(Asccenter::className(), ['ASCId' => 'ASCId']);
    }

    public function getUser()
    {
        return $this->hasOne(Ascuser::className(), ['UserId' => 'UserId']);
    }
    public function getAttendancereportdetails()
    {
        return $this->hasMany(Attendancereportdetails::className(), ['AttendanceReportId' => 'AttendanceReportId']);
    }
}

Second model : Attendancereportdetails

<?php
namespace app\models;
use Yii;
class Attendancereportdetails extends \yii\db\ActiveRecord
{
    public static function tableName()
    {
        return 'attendancereportdetails';
    }
    public function rules()
    {
        return [
            [['StudentId', 'Standard', 'AttendanceStatus'], 'required'],
            [['AttendanceReportId', 'StudentId'], 'integer'],
            [['AttendanceStatus'], 'string', 'max' => 20],
            [['AttendanceReportId'], 'exist', 'skipOnError' => true, 'targetClass' => Attendancereport::className(), 'targetAttribute' => ['AttendanceReportId' => 'AttendanceReportId']],
            [['StudentId'], 'exist', 'skipOnError' => true, 'targetClass' => Student::className(), 'targetAttribute' => ['StudentId' => 'StudentId']],
        ];
    }
    public function attributeLabels()
    {
        return [
            'AttendanceReportDetailsId' => 'Attendance Report Details ID',
            'AttendanceReportId' => 'Attendance Report ID',
            'StudentId' => 'Student',
            'Standard' => 'Standard',
            'AttendanceStatus' => 'Attendance Status',
        ];
    }
    public function getAttendanceReport()
    {
        return $this->hasOne(Attendancereport::className(), ['AttendanceReportId' => 'AttendanceReportId']);
    }
    public function getStudent()
    {
        return $this->hasOne(Student::className(), ['StudentId' => 'StudentId']);
    }
}

How can we accomplish this.

2

My answer is a little different, the required rules are in the dependent class Attendancereportdetails, but you can probably flip it around to work in Attendancereport

[['StudentId', 'Standard', 'AttendanceStatus'],
    'required',
    'when' => static fn(self $model) => is_a($model->attendanceReport, Attendancereport::class),
],