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I am having an issue with Eloquent regarding removing child model:
When this is executed in process2() I still have the deleted model which is not ok.
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class Model1 extends Model
{
public function seasons() {
return $this->hasMany('App\Models\Seasons', 'series_id', 'id');
}
}
class Process {
public function process1($model1Instance) {
for($model1Instance->seasons() as $season) {
if(//whatever//) {
$season->delete();
}
}
}
public function process2($model1Instance) {
for($model1Instance->seasons() as $season) {
//At this point I still have the deleted instance
}
}
}
$proc = new Process();
......
$proc->process1($model1Instance);
$proc->process2($model1Instance);
When process1() removes a model from the parent, how can I have it removed in process2()?
1.Method:
$model1Instance->seasons()->detach($season);
but got: Call to undefined method Illuminate\Database\Query\Builder::detach()
2.Another class I could make another simple class to store these but I do not think it is okay, although I could then set filtered seasons but still have to use Model1 instance:
class Model1Copy {
private $seasons;
public function __construct($seasons) {
$this->seasons = $seasons;
}
}
Fatal when tried:
public function process1($model1Instance) {
for($model1Instance->seasons() as $season) {
if(//whatever//) {
$season->delete();
} else {
$childs[]=$season;
}
}
$model1Instance->seasons = $childs
}
Would be to make my own repositories to skip the ORM`s behavior, but it is frustrating because I have to rewrite all queries just to remove an instance...
439
with() function is used to eager load in Laravel. Unless of using 2 or more separate queries to fetch data from the database , we can use it with() method after the first command. It provides a better user experience as we do not have to wait for a longer period of time in fetching data from the database.
BelongsTo is a inverse of HasOne. We can define the inverse of a hasOne relationship using the belongsTo method. Take simple example with User and Phone models. I'm giving hasOne relation from User to Phone. class User extends Model { /** * Get the phone record associated with the user.
Using the hasOne relationship in Laravel First of all, we can explain a simple example of the use of hasOne: if an article has comments and we want to take one of them with the details of the article, we can use the hasOne relationship or a user can have a profile table.
To delete hasMany records with condition:
$model1Instance->seasons()->where('condition', 'met')->delete();
To delete all:
$model1Instance->seasons()->delete();
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