Laravel WhereIn Not Working

Question

为什么这会按预期返回集合;

$postcodes = DB::table('payments')->whereIn('VendorZIP', array('BS19AA','PO48AA'))->get();
print_r($postcodes);

但这会返回错误;

$payments = Payment::all();
$payments->whereIn('VendorZIP', array('BS19AA','PO48AA'))->get();
print_r($payments);

错误是;

Call to undefined method Illuminate\Database\Eloquent\Collection::whereIn()

我当然有付款模式;

<?php namespace App\Models;

  use Illuminate\Database\Eloquent\Model;

  class Payment extends Model {
    //
  }

Answer 1

无需在all()之前致电whereIn()。将您的代码更改为：

$payments = Payment::whereIn('VendorZIP', array('BS19AA','PO48AA'))->get();

您可以在Eloquent basic usage文档中找到更多示例。