在非对象上调用成员函数 where()？ Laravel 5.2

Question

我正在尝试从 2 个表中检索匹配值，以便创建用户记录。

我的代码：

$states = ['1','2'];
$cities = DB::table('cities')->get();
$state = $faker->randomElement($states);
$city= $faker->randomElement($cities->where('state_id',$state)->value('id'));

当前回复：

"Call to a member function where() on a non-object".

编辑 1. 翻译成英文以便更好地理解。

Answer 1

试试这个

$comuna = $faker->randomElement($comunas->where('region_id',$region[0])->where('region_id',$region[1])->get();

Answer 2

应该是这样的：

$states = ['1','2'];
$state = $faker->randomElement($states);
$cities = DB::table('cities')->where('state_id', $state)->lists('id')->all();
$city = $faker->randomElement($cities);

在非对象上调用成员函数 where()？ Laravel 5.2

Call to a member function where() on a non-object ? Laravel 5.2

php

mysql

relational

where

laravel-5