field('id,pid,name')->where('pid',$pid)->order('id asc')->select(); $this->success('success',$list); } //给ios用的 //一个接口全部数据都给到 public function area_json(){ $list = Db::name('area')->field('id,pid,name,level')->order('id asc')->select(); //按级拆分 $list_1 = []; $list_2 = []; $list_3 = []; foreach($list as $key => $value){ if($value['level'] == 1){ $list_1[] = $value; } if($value['level'] == 2){ $list_2[] = $value; } if($value['level'] == 3){ $list_3[] = $value; } } //三级并到市级 foreach($list_2 as $k2 => $v2){ foreach($list_3 as $k3 => $v3){ if($v2['id'] == $v3['pid']){ $list_2[$k2]['child'][] = $v3; } } } //市级并到省级 foreach($list_1 as $k1 => $v1){ foreach($list_2 as $k2 => $v2){ if($v1['id'] == $v2['pid']){ $list_1[$k1]['child'][] = $v2; } } } $this->success('success',$list_1); } }