我目前正在将一个我正在处理的站点从MySQL迁移到MongoDB,并且遇到了一个奇怪的问题。
我正在尝试进行以下收藏:
country (string)
regions (array)
regions (string)
cities (array)
city (string)
问题是由于某种原因,city数组之一正在作为对象插入。一切都来自相同的来源,并使用相同的代码。
问题示例:
[
{
country: "United States",
regions: (array) [
{
region: "Arizona",
cities: (array) [
{ city: "Phoenix" }
]
},
{
region: "California",
cities: (object) [
{ city: "Los Angeles" }
]
}
]
}
]
这是一个问题,因为当我搜索{ "regions.cities.city": "Los Angeles" }
时,结果返回为空,但是如果我搜索{ "regions.cities.city": "Phoenix" }
,则会得到正确的结果。
我希望这一切都说得通,但请随时提出问题。
-编辑-
PHP代码产生问题:
$countries = $this->db_model->find_list('countries', array(), false, true);
foreach($countries as $key => $country)
{
if($regions = $this->db_model->find_list('regions', array('country_id' => $country['id']), false, true))
{
foreach($regions as $rkey => $region)
{
if($cities = $this->db_model->find_list('cities', array('region_id' => $region['id']), false, true))
{
$regions[$rkey]['cities'] = $cities;
}
}
$countries[$key]['regions'] = $regions;
}
}
$this->mongo->batch_insert('countries', $countries);
答案 0 :(得分:3)
原来需要重置的阵列键的作用是,我删除了一些符合某些条件的项目(从示例代码中删除,以使内容易于阅读,将包含在下面的代码中)。
$countries = $this->db_model->find_list('countries', array(), false, true);
foreach($countries as $key => $country)
{
if($country['deleted']) { unset($countries[$key]); }
elseif($regions = $this->db_model->find_list('regions', array('country_id' => $country['id']), false, true))
{
foreach($regions as $rkey => $region)
{
if($region['deleted']) { unset($regions[$rkey]); }
elseif($cities = $this->db_model->find_list('cities', array('region_id' => $region['id']), false, true))
{
foreach($cities as $ckey => $city)
{
if($city['deleted']) { unset($cities[$ckey]); }
}
$regions[$rkey]['cities'] =array_values($cities);
}
}
$countries[$key]['regions'] = array_values($regions);
}
}
$this->mongo->batch_insert('countries', array_values($countries));
谢谢Marco提供的所有帮助和见识。