'required|min:1,max:255', 'what' => 'required|in:withdrawal,deposit,transfer|exists:transaction_types,type', 'amount' => 'numeric|required|min:0.01', 'date' => 'required|date', 'reminder_id' => 'numeric|exists:reminders,id', 'amount_currency_id' => 'required|exists:transaction_currencies,id', ]; switch ($what) { case 'withdrawal': $rules['account_id'] = 'required|exists:accounts,id|belongsToUser:accounts'; $rules['expense_account'] = 'between:1,255'; $rules['category'] = 'between:1,255'; if (intval(Input::get('budget_id')) != 0) { $rules['budget_id'] = 'exists:budgets,id|belongsToUser:budgets'; } break; case 'deposit': $rules['category'] = 'between:1,255'; $rules['account_id'] = 'required|exists:accounts,id|belongsToUser:accounts'; $rules['revenue_account'] = 'between:1,255'; break; case 'transfer': $rules['account_from_id'] = 'required|exists:accounts,id|belongsToUser:accounts|different:account_to_id'; $rules['account_to_id'] = 'required|exists:accounts,id|belongsToUser:accounts|different:account_from_id'; $rules['piggy_bank_id'] = 'exists:piggy_banks,id'; $rules['category'] = 'between:1,255'; break; default: die('Cannot handle ' . $what); break; } return $rules; } }