['required', 'in:Expense,Purchase,Reimbursement,Donation'], 'amount' => ['required', 'numeric', 'gt:0'], 'purchased_by' => ['required', 'integer', 'min:1'], 'retailor' => ['nullable', 'string', 'max:255'], 'date_of_purchase' => ['required', 'date_format:Y-m-d'], 'description' => ['nullable', 'string'], 'receipt' => ['required', 'file', 'max:2048', 'mimes:jpg,jpeg,png,webp,gif,pdf'], 'school_year' => ['nullable', 'string'], 'semester' => ['nullable', 'string'], ]; } }