Creation of Laravel Framework Model and Example of Model Operating on Data

This paper describes the creation of Laravel framework model and the operation of the model on data. Share it for your reference, as follows:

Model creation:

<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Admin extends Model{
  // Specify a table name 
  protected $table = 'wd_user';
  // Specify the fields that allow bulk copying 
  protected $fillable = ['username'];
  // Specify id
  protected $primaryKey = 'uid';
  // Automatic maintenance timestamp 
  public $timestamps = true;
  // Get time format 
  protected function getDateFormat()
  {
    return time();
  }
  // Get a timestamp 
  protected function asDateTime($val)
  {
    return $val;
  }
}

The model manipulates the data:

public function orm(){
  // Look up all records of the table 
  //$user = Admin::all();
  //dd($user);
  // Inquire about 1 A record 
  //$user = Admin::find(2);
  //dd($user);
  //findOrFail()  Find according to the primary key and throw an exception if it is not found 
  //$user = Admin::findOrFail(1);
  //dd($user);
  // Query all records 
  //$user = Admin::get();
  //dd($user);
  // Add Criteria Query 
  //$user = Admin::where('uid','>=',4)->orderBy('uid','desc')->first();
  // Segmented query 
  //Admin::chunk(2,function($user){
    //var_dump($user);
  //});
  // Aggregate function 
  // Gets the number of records 
  //$count = Admin::count();
  //dd($count);
  // Get the maximum value 
  //$max = Admin::where('uid','>=',5)->max('age');
  // Using a model to add data 
  //$user = new Admin();
  //$user-> username = 'haha';
  //$bool = $user->save();
  //dd($bool);
  // Acquisition time 
  //$user = Admin::find(1);
  //echo date('Y-m-d H:i:s',$user->create_at);
  // Object that uses the model Create Method to add data 
  //$user = Admin::create(['username'=>'meimei']);
  //dd($user);
  // Find users by attributes, and add if not 
  //$user = Admin::firstOrCreate(['username'=>'imooc']);
  //dd($user);
  // Find users by attributes , If not, add it, but do not save it to the database 
  //$user = Admin::firstOrNew(['username'=>'imooc']);
  //dd($user);
  // Update data through models 
  //$user = Admin::find(1);
  //$user->username = 'jack';
  //$bool = $user->save();
  //dd($bool);
  // Adding conditions 
  //$num = Admin::where('id','>','1')->update(['age'=>21]);
  //dd($num);
  // Delete through model 
  //$user = Admin::find(6);
  //$bool = $user->delete();
  //dd($bool);
  // Delete by primary key 
  //$num = Admin::destroy(6);
  //dd($num);
  // Delete multiple records 
  //$num = Admin::destroy(1,2,3);
  //$num = Admin::destroy([1,2,3]);
  //dd($num);
  // Delete operation of adding conditions 
  //$num = Admin::where('uid','>','4')->delete();
  //dd($num);
}

More readers interested in Laravel can check the topics of this site: "Introduction and Advanced Tutorial of Laravel Framework", "Summary of Excellent Development Framework of php", "Introduction Tutorial of php Object-Oriented Programming", "Introduction Tutorial of php+mysql Database Operation" and "Summary of Common Database Operation Skills of php"

Hope that this article is based on the framework of Laravel PHP programming help.