laravel ORM 只开启created_at的几种方法总结_php实例_

 class User extends Model { public $timestamps = false;//关闭自动维护 public static function boot() { parent::boot(); #只添加created_at不添加updated_at static::creating(function ($model) { $model->created_at = $model->freshTimestamp(); //$model->updated_at = $model->freshTimeStamp(); }); } } 

 此处有坑:使用create方法创建一条记录时返回值的created的值是这样的： “created_at”: { “date”: “2017-09-27 13:47:12.000000”, “timezone_type”: 3, “timezone”: “Asia/Shanghai” }, 并不是想象中的 “created_at”: “2017-09-27 13:49:39”, 

 class User extends Model { const UPDATED_AT = null;//设置update_at为null //const CREATED_AT = null; }

 此处有坑:使用destroy删除会报错 Missing argument 2 for Illuminate\Database\Eloquent\Model::setAttribute() 使用delete不影响,wherein也不影响

 class User extends Model { //重写setUpdatedAt方法 public function setUpdatedAt($value) { // Do nothing. } //public function setCreatedAt($value) //{ // Do nothing. //} } 

 class User extends Model { //重写setUpdatedAt方法 public function setUpdatedAtAttribute($value) { // Do nothing. } //public function setCreatedAtAttribute($value) //{ // Do nothing. //} } 

 class CreatePostsTable extends Migration { public function up() { Schema::create('posts', function(Blueprint $table) { $table->timestamp('created_at') ->default(DB::raw('CURRENT_TIMESTAMP')); }); }