172 lines
4.5 KiB
PHP
172 lines
4.5 KiB
PHP
<?php
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namespace app\plugins\vr_ticket\service;
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use think\facade\Db;
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/**
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* 城市服务层 - VR票务插件
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* 用于获取和管理城市列表数据，支撑城市过滤功能
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*/
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class CityService
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{
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/**
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* 获取所有可用城市列表（叶子节点城市，即区县级别）
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* @param array $params
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* @return array
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*/
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public static function getCityList($params = [])
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{
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// 查询可用城市
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// 优先使用已配置的城市过滤条件
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$where = [
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['is_enable', '=', 1],
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];
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// 如果指定了父级ID
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if (!empty($params['pid'])) {
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$where[] = ['pid', '=', intval($params['pid'])];
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}
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// 如果指定了层级
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if (isset($params['level']) && is_numeric($params['level'])) {
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$where[] = ['level', '=', intval($params['level'])];
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}
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// 字段
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$field = empty($params['field']) ? 'id,pid,name,level,letters' : $params['field'];
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$orderBy = empty($params['order_by']) ? 'sort asc,id asc' : $params['order_by'];
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return Db::name('Region')
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->field($field)
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->where($where)
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->order($orderBy)
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->select()
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->toArray();
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}
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/**
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* 获取热门城市列表
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* @param int $limit
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* @return array
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*/
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public static function getHotCities($limit = 10)
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{
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// 预设热门城市ID（可根据实际业务配置）
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$hotCityIds = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; // 默认北京、上海、广州、深圳等
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return Db::name('Region')
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->field('id,pid,name,level,letters')
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->where(['id' => $hotCityIds, 'is_enable' => 1])
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->order('sort asc,id asc')
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->select()
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->toArray();
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}
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/**
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* 获取省份列表
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* @return array
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*/
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public static function getProvinces()
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{
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return self::getCityList(['level' => 1]);
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}
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/**
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* 根据父级ID获取子城市列表
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* @param int $pid
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* @return array
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*/
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public static function getCitiesByPid($pid)
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{
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return self::getCityList(['pid' => intval($pid)]);
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}
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/**
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* 获取城市名称
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* @param int $cityId
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* @return string|null
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*/
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public static function getCityName($cityId)
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{
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if (empty($cityId)) {
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return null;
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}
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$name = Db::name('Region')
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->where(['id' => intval($cityId), 'is_enable' => 1])
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->value('name');
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return $name ?: null;
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}
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/**
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* 获取当前选中的城市信息
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* @param int $cityId
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* @return array|null
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*/
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public static function getSelectedCity($cityId)
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{
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if (empty($cityId)) {
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return null;
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}
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$city = Db::name('Region')
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->field('id,pid,name,level,letters')
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->where(['id' => intval($cityId), 'is_enable' => 1])
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->find();
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return $city ?: null;
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}
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/**
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* 构建城市选择器所需的三级联动数据结构
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* @return array
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*/
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public static function getCitySelectorData()
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{
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// 省份（一级）
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$provinces = self::getProvinces();
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// 标记有子城市的城市为非叶子节点
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if (!empty($provinces)) {
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foreach ($provinces as &$province) {
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// 查询是否有子城市
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$hasChildren = Db::name('Region')
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->where(['pid' => $province['id'], 'is_enable' => 1])
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->count();
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$province['has_children'] = $hasChildren > 0 ? 1 : 0;
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}
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}
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return [
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'provinces' => $provinces ?: [],
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];
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}
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/**
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* 获取城市树形结构（用于级联选择）
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* @param int $pid
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* @return array
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*/
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public static function getRegionTree($pid = 0)
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{
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$pid = intval($pid);
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$regions = Db::name('Region')
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->field('id,pid,name,level,letters')
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->where(['pid' => $pid, 'is_enable' => 1])
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->order('sort asc,id asc')
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->select()
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->toArray();
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if (!empty($regions)) {
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foreach ($regions as &$region) {
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// 递归获取子节点
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$children = self::getRegionTree($region['id']);
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$region['children'] = $children ?: [];
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}
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}
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return $regions;
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}
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}
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