screen/application/common/model/Area.php

<?php

namespace app\common\model;

use think\Cache;
use think\db\Query;
use think\Model;

/**
 * 地区数据模型
 * @property bool has_air_coordinate
 * @method static static shi($name=null)
 * @method static static area()
 */
class Area extends Model
{
    const LEVEL_COUNTY=3;
    /**
     * 根据经纬度获取当前地区信息
     *
     * @param string $lng 经度
     * @param string $lat 纬度
     * @return Area 城市信息
     */
    public static function getAreaFromLngLat($lng, $lat, $level = 3)
    {
        $namearr = [1 => 'geo:province', 2 => 'geo:city', 3 => 'geo:district'];
        $rangearr = [1 => 15000, 2 => 1000, 3 => 200];
        $geoname = isset($namearr[$level]) ? $namearr[$level] : $namearr[3];
        $georange = isset($rangearr[$level]) ? $rangearr[$level] : $rangearr[3];
        // 读取范围内的ID
        $redis = Cache::store('redis')->handler();
        $georadiuslist = [];
        if (method_exists($redis, 'georadius')) {
            $georadiuslist = $redis->georadius($geoname, $lng, $lat, $georange, 'km', ['WITHDIST', 'COUNT' => 5, 'ASC']);
        }

        if ($georadiuslist) {
            list($id, $distance) = $georadiuslist[0];
        }
        $id = isset($id) && $id ? $id : 3;
        return self::get($id);
    }

    /**
     * 根据经纬度获取省份
     *
     * @param string $lng 经度
     * @param string $lat 纬度
     * @return Area
     */
    public static function getProvinceFromLngLat($lng, $lat)
    {
        $provincedata = null;
        $citydata = self::getCityFromLngLat($lng, $lat);
        if ($citydata) {
            $provincedata = self::get($citydata['pid']);
        }
        return $provincedata;
    }

    /**
     * 根据经纬度获取城市
     *
     * @param string $lng 经度
     * @param string $lat 纬度
     * @return Area
     */
    public static function getCityFromLngLat($lng, $lat)
    {
        $citydata = null;
        $districtdata = self::getDistrictFromLngLat($lng, $lat);
        if ($districtdata) {
            $citydata = self::get($districtdata['pid']);
        }
        return $citydata;
    }

    /**
     * 根据经纬度获取地区
     *
     * @param string $lng 经度
     * @param string $lat 纬度
     * @return Area
     */
    public static function getDistrictFromLngLat($lng, $lat)
    {
        $districtdata = self::getAreaFromLngLat($lng, $lat, 3);
        return $districtdata;
    }

    public function scopeLevel(Query $query,$level){
        $query->where('level',$level);
    }
    public function scopePro(Query $query){
        $query->level(1);
    }
    public function scopeShi(Query $query,$name=null){
        $query->level(2);
        if($name!==null){
            $query->where('name|shortname','like',"%{$name}%");
        }
    }
    public function scopeArea(Query $query){
        $query->level(3);
    }
    public function province(){
        return $this->hasMany(User::class,'province_id');
    }
    public function city(){
        return $this->hasMany(User::class,'city_id');
    }
    public function county(){
        return $this->hasMany(User::class,'county_id');
    }
    public function getMergenameAttr($a){
        return str_replace(',','',str_replace('中国,','',$a));
    }

    public static function getIdByName($name,$level=null){
        $map=[];
        if($level){
            $map['level']=$level;
        }
        return self::where('name|shortname',$name)->where($map)->value('id');
    }

    public static function getTreeId($id){
        if(is_numeric($id)) {
            $county = self::where('id', $id)->area()->find();
        }else{
            $county= self::where('name|shortname',$id)->find();
        }
        if(!$county){
            throw_user('区县不存在');
        }
        $cityId=$county['pid'];
        $provinceId=self::where('id',$cityId)->value('pid');
        if(!$provinceId){
            throw_user('省不存在');
        }
        return [$provinceId,$cityId,$county['id']];
    }
    public static function getNameString($id,$sp=''){
        if(!$id){
            return '';
        }
        $cacheName='area_'.serialize($id).md5($sp);
        $res=Cache::get($cacheName);
        if(!$res){
            $res=implode($sp,self::whereIn('id',$id)->column('name'));
            Cache::set($cacheName,$res,0);
        }
        return $res;
    }

    public static function shouldSend($county_id){
        $config=config('site.disable_send_province');
        $config=explode(',',$config)?:[];
        $provinceId=self::getTreeId($county_id)[0];
        if(in_array($provinceId,$config)){
            throw_user('此区域无法购买此产品');
        }
    }
}