从关系 laravel 中的另一个 table 获取 ID

Question

我想从 pdf_Files table 获取数据，它只会显示基于它的文件名 user_id。我真的不知道如何解释它，但也许如果你看到我的代码，你就会明白。我已经完成这2 table之间的关系了

我希望它是这样的：

DB::table('pdf_files')->where(table:personal_infos->id = pdf_files->user_id)->get();  --> I want it to be something like that but I do not know how to get it

这是我的代码：控制器：

public 函数 downfunc(请求 $request){

$downloads=DB::table('pdf_files')->get();
return view('download.viewfile',compact('downloads'));

}

pdf文件模型：

   protected $fillable = array('file_name','file_size','user_id');

public function personal_infos() {
    return $this->belongsTo('App\personal_info', 'user_id', 'id');
}

personal_info 型号：

class personal_info extends Eloquent
{
    protected $fillable = array('Email', 'Name');
    protected $table = 'personal_infos';
    protected $primaryKey = 'id';

    public function pdfFiles() {
    return $this->hasMany('App\pdfFile','user_id');
}

}

Answer 1

您是要一次搜索多个用户 ID 还是从请求中获取 ID？

如果您要从请求中获取信息，您会想要执行以下操作：

use App\pdfFile; //Put this above the class

pdfFile::where('user_id', $request->user_id)->get(); //If you are checking to see if something equals something else in eloquent, you do not have to use equals

从关系 laravel 中的另一个 table 获取 ID

Getting id from another table in a relationship laravel

php

mysql

database

one-to-many

laravel