unu la mulți laravel
For example, a blog post may have an infinite number of comments. And a single
comment belongs to only a single post
class Post extends Model
{
public function comments()
{
return $this->hasMany('App\Models\Comment');
}
}
class Comment extends Model
{
public function post()
{
return $this->belongsTo('App\Models\Post');
}
}
model polimorf laravel
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Image extends Model
{
/**
* Get the owning imageable model.
*/
public function imageable()
{
return $this->morphTo();
}
}
class Post extends Model
{
/**
* Get the post's image.
*/
public function image()
{
return $this->morphOne('App\Image', 'imageable');
}
}
class User extends Model
{
/**
* Get the user's image.
*/
public function image()
{
return $this->morphOne('App\Image', 'imageable');
}
}
laravel poli relație morfică
class Mechanic extends Model
{
/**
* Get the car's owner.
*/
public function carOwner()
{
return $this->hasOneThrough(
'App\Owner',
'App\Car',
'mechanic_id', // Foreign key on cars table...
'car_id', // Foreign key on owners table...
'id', // Local key on mechanics table...
'id' // Local key on cars table...
);
}
}
morph relație laravel
You may register the morphMap in the boot function of your
App\Providers\AppServiceProvider class or create a separate service provider
if you wish.
use Illuminate\Database\Eloquent\Relations\Relation;
Relation::morphMap([
'post' => 'App\Models\Post',
'video' => 'App\Models\Video',
]);