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CODE EXAMPLE FOR PHP

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);
})
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Tagged: #laravel #unique #validation #multiple #columns
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