PHP

laravel unique validation on multiple columns

'mobile_no' 
  => 'unique:users,mobile_no,NULL,id,country_id,'.request('country_id');

Laravel Unique Multiple Column validation

'name'        => 'required|max:150|unique:course_lessons,name,NULL,id,course_id,' . request('course_id'),
 "<input_filed_name>" => "valiadtionRule"|"ValidationRule"|"unique:<tableName>,<validateableField>,<ignoreableID>,<tablePrimaryKey>,<column1>,<column1Value>,<column2>,<column2Value>"

laravel unique validation on multiple columns

'exam_category_id' => Rule::unique('exams')->where(function ($query) use ($request) {
   return $query->where('exam_name', $request->exam_name)
      ->where('exam_year', $request->exam_year)
      ->where('student_id', $request->student_id);
})