pluck('currency_id')->toArray(); $taxes = Tax::where('exchange_rate', null)->pluck('currency_id')->toArray(); $estimates = Estimate::where('exchange_rate', null)->pluck('currency_id')->toArray(); $payments = Payment::where('exchange_rate', null)->pluck('currency_id')->toArray(); $currencies = array_merge($invoices, $taxes, $estimates, $payments); return response()->json([ 'currencies' => Currency::whereIn('id', $currencies)->get() ]); } }