Laravel ORM only turns on several method summaries of CREated_AT

Method one:

class User extends Model { public $timestamps = false; Public static function boot() {parent::boot(); Static ::creating(function ($model) {$model->created_at = $model->freshTimestamp(); //$model->updated_at = $model->freshTimeStamp(); }); {" date ":" 2020-09-27 13:47:12.000000 ", "timezone_type" : "created_at" : {" date ":" 2020-09-27 13:47:12.000000 ", "timezone_type" : Timezone: Asia/Shanghai}, created_at: 2020-09-27 13:49:39,Copy the code

Method 2:

class User extends Model { const UPDATED_AT = null; //const CREATED_AT = null; }Copy the code

Error: Using destroy to delete will cause an error

Missing argument 2 for Illuminate\Database\Eloquent\Model::setAttribute() Delete does not affect and having does not affectCopy the code

Method 3:

Public function setUpdatedAt($value) {// Do nothing.} public function setUpdatedAt($value) {// Do nothing setCreatedAt($value) //{ // Do nothing. //} }Copy the code

Method 4:

Class User extends Model {public function setUpdatedAtAttribute($value) {// Do nothing function setCreatedAtAttribute($value) //{ // Do nothing. //} }Copy the code

It can also be set in Migration.

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