Cara untuk bertanya dan memproses data dalam rangka kerja ThinkPHP5

$where=array(
  "version_id"=>$version_id
);
$data = model("PackageWhitelist")->where($where)->find();
$this->assign("package_id",$package_id);
$where=array(
  "package_id"=>$package_id
);
$data = model("Package")->where($where)->find();
if($data){
  $this->assign("target_version",$data['target_version']);
}

$device_number_list = model("PackageWhitelist")->where($where)->field("device_number")->find();

$this->assign("device_number",$device_number_list['device_number']);

$where=array(
     "version_id"=>$version_id
 );
$data = model("PackageWhitelist")->where($where)->field("device_number")->select();
$device_number_list='';
foreach($data as $val){
  $list = $val->toArray();
  if($device_number_list){
    $device_number_list=$device_number_list.';'.$list["device_number"];
  }else{
    $device_number_list=$list["device_number"];
  }
}

$where=array(
  "version_id"=>$version_id
);
$data = model("PackageWhitelist")->where($where)->select();
$device_number_list='';
foreach($data as $val){
  $list = $val->toArray();
  if($device_number_list){
    $device_number_list=$device_number_list.';'.$list["device_number"];
  }else{
    $device_number_list=$list["device_number"];
  }
}

public function index($version_id){
  $where=array(
    "version_id"=>$version_id
  );
  $version_name = model("Version")->where($where)->field("version_name")->find();
  $listrows=config("LISTROWS")?config("LISTROWS"):10;
  $package_lists=model("Package")->where($where)->paginate($listrows);
  $package_infos = $package_lists->toArray()["data"];
  foreach($package_infos as $key=>$value){
    $package_infos[$key] = array("source_version" => $version_name["version_name"]) + $package_infos[$key];
  }
}

<?php
/**
 * Created by PhpStorm.
 * User: chenzhitao
 * Date: 2017/5/8
 * Time: 下午2:15
 */
namespace app\api\model;
use think\Db;
use think\Exception;
class Banner
{
  public static function getBannerByID($id){
    $result = Db::query(&#39;select * from banner_item where banner_id=?&#39;,[$id]);
    return $result;
  }
}

<?php
/**
 * Created by PhpStorm.
 * User: chenzhitao
 * Date: 2017/5/8
 * Time: 下午2:15
 */
namespace app\api\model;
use think\Db;
use think\Exception;
class Banner
{
  public static function getBannerByID($id){
    //1.使用原生sql
//    $result = Db::query(&#39;select * from banner_item where banner_id=?&#39;,[$id]);
//    return $result;
    //2.使用查询构建器
    /*
     * 链式查询Db::table(&#39;banner_item&#39;)->where(&#39;banner_id&#39;,&#39;=&#39;,$id) 返回查询对象,->select();返回查询结果,
     * 除了select操作还有 find(返回一条数据) update delete insert
     * 对应的where 也分三种,1.表达式where(&#39;字段名&#39;,&#39;表达式&#39;,&#39;查询条件&#39;) 2.数组发 3.闭包。
     */
    // 2.1 表达式法
//    $result = Db::table(&#39;banner_item&#39;)
//      ->where(&#39;banner_id&#39;,&#39;=&#39;,$id)
//      ->select();
//    return $result;
    //2.2 闭包法
    $result = Db::table(&#39;banner_item&#39;)
      ->where(function ($query) use($id){
        $query->where(&#39;banner_id&#39;,&#39;=&#39;,$id);
      })
      ->select();
    return $result;
  }
}