I am having a problem accessing morphOne relationship
In my controller I have
$post = Post::with('content')->where('id', 1)->get();
dd($post);
this gives
This is setup of my classes:
Post.php
class Post extends Model
{
use Contentable;
Contentable.php
trait Contentable {
public function content()
{
return $this->morphOne(Content::class, 'contentable');
}
Content.php
class Content extends Model
{
protected $table = 'content';
public $timestamps = false;
}
If in controller I do this:
dd($post->content());
I get Method content does not exist.
or
dd($post->content);
I get Property [content] does not exist on this collection instance.
Related
Why set connection does not work in nested relation?
Follower.php
class Follower extends Model {
$connection = 'followers';
public function details() {
return $this->belongsTo(User::class, 'user_id');
}
}
User.php
class User extends Model {
$connection = 'users';
protected $withCount = ['notifications'];
public function notifications() {
return $this->setConnection('followers')->hasMany('App\Models\Notifications');
}
}
and the query:
Follower::query()->where('user_id', 1)->with('details')->get();
and it throws :
SQLSTATE[42S02]: Base table or view not found: 1146 Table
'users.notifications' doesn't exist (SQL: select ` ....
But when I try this it works very well
User::with('notifications')->find(1);
Update
Notification.php
class Notification extends Model
{
protected $fillable = [
'user_id',
'builder',
'notification_type',
'comment_id',
'read_at'
];
}
This is a known issue with laravel since 2018, for more information see this thread , also there is a open pull request to fix this issue and will get fixed till next release
for now you can use hoyvoy/laravel-cross-database-subqueries package
install package using this
composer require hoyvoy/laravel-cross-database-subqueries
Follower.php
use Hoyvoy\CrossDatabase\Eloquent\Model;
class Follower extends Model {
$connection = 'followers';
public function details() {
return $this->belongsTo(User::class, 'user_id');
}
}
User.php
use Hoyvoy\CrossDatabase\Eloquent\Model;
class User extends Model {
$connection = 'users';
protected $withCount = ['notifications'];
public function notifications() {
return $this->setConnection('followers')->hasMany('App\Models\Notifications');
}
}
for every model you have add the default protected $connection
I'm quite new to Laravel and now I'm trying to move parts of a former application from a small self written framework into Laravel. The address book is multilingual therefor the table structure is a little more complicated.
db-structure
And this is my source code:
AddressBookController.php
namespace App\Http\Controllers;
use App\AddressBook as AB;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;
class AddressBookController extends Controller
{
/**
* Display a listing of the resource.
*
* #return \Illuminate\Http\Response
*/
public function index()
{
$entries = AB::all();
return view('addressBook')->with([
'class' => __CLASS__,
'function' => __FUNCTION__,
'line' => __LINE__,
'entries' => $entries,
]);
}
}
Model AddressBook.php
namespace App;
use Illuminate\Database\Eloquent\Model;
class AddressBook extends Model
{
protected $table = 'address';
protected $primaryKey = 'address_id';
protected $keyType = 'int';
public $incrementing = true;
public $timestamps = false;
protected $searchable = [
'columns' => [
'address.address_surname' => 10,
'address.address_company' => 5,
'address.address_vatid' => 2,
],
];
public function country() {
return $this->hasOne('country', 'country_id', 'country_id');
}
public function addresstype() {
return $this->hasOne('addresstype', 'addresstype_id', 'addresstype_id');
}
}
Model Country.php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Country extends Model
{
protected $table = 'country';
protected $primaryKey = 'country_id';
protected $keyType = 'int';
public $incrementing = true;
public $timestamps = false;
public function translation() {
return $this->hasOne('translations', 'translations_id', 'translations_id');
}
public function addressbook() {
return $this->belongsTo('address', 'country_id', 'country_id');
}
}
Model AddressType
namespace App;
use Illuminate\Database\Eloquent\Model;
class AddressType extends Model
{
protected $table = 'addresstype';
protected $primaryKey = 'addresstype_id';
protected $keyType = 'int';
public $incrementing = true;
public $timestamps = false;
public function translation() {
return $this->hasOne('translations', 'translations_id', 'translations_id');
}
public function addressbook() {
return $this->belongsTo('address', 'addresstype_id', 'addresstype_id');
}
}
Model Translation.php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Translation extends Model
{
protected $table = 'translations';
protected $primaryKey = 'translations_id';
protected $keyType = 'int';
public $incrementing = true;
public $timestamps = false;
public function country() {
return $this->belongsTo('country', 'translations_id', 'translations_id');
}
public function addresstype() {
return $this->belongsTo('addresstype', 'translations_id', 'translations_id');
}
}
The request "$entries = AB::all();" works in general but I get the id's and maybe I'm completely wrong here but I thought that data from foreign keys will be replaced with the respective models (if configured correctly). so my question is:
a. did I make a mistake during configuration and if yes, where exactly is the error?
or
b. is my assumption of replacing id's with objects is completly wrong?
Thanks in advance!
Steve
Laravel Eloquent models do not replace the foreign keys of the active records with the relational data, it only appends a new property with the same name as the method relating the classes and in that property it puts all the Model instances of the resulted query, this ONLY if you access the property, its called Eager Loading.
It is explained here (Ofiicial Documentation)
$addressBook = App\AddressBook::find(1); //this only will return the active record with the id 1 and nothig more.
$addressBook->country; // The property "country" does not exist in the AddressBook Classs but eloquent models will return a "fake" property with the value of the result of the query by the method with the same name (only if the method returns an Eloquent Relation).
This Eloquent behavior is natural, and is a very clever way to minimize the number of queries, Eloquent will never load a relation if there is no need to.
If you want to load a relation in a set the models at the same time that those models are retriving from the db you need to explicitly especify wich relations you want to load.
$addressBook = App\AddressBook::with(['country', 'addresstype', 'anotherRelation'])->get(); // this will retrive all the addressBook models and in each one will attach the relations specified.
[EDITED]
Also you have to place the entire namespace of the related model class in the relation methods so you need to replaced like:
class Translation extends Model
{
protected $table = 'translations';
protected $primaryKey = 'translations_id';
protected $keyType = 'int';
public $incrementing = true;
public $timestamps = false;
// ****** You need to put the entire namespace of the Model class
public function country() {
return $this->belongsTo('App\Country', 'translations_id', 'translations_id');
}
I want show $post->category->cat_name but I have an error Trying to get property of non-object!
Model : Category
class Category extends \Eloquent {
protected $guarded = array();
public static $rules = array();
public function posts(){
return $this->hasMany('Post');
}
}
Model Post
class Post extends \Eloquent {
protected $guarded = array();
public static $rules = array();
public function category(){
return $this->belongsTo('Category');
}
public function user(){
return $this->belongsTo('User');
}
public function comments(){
return $this->hasMany('Comment');
}
}
PostsController
public function show($id)
{
$post = Post::find($id);
return View::make('posts.show',compact('post'));
}
}
In View $post->post_name works.
$post->user->username works
$post->comments->content works
but $post->category->cat_name doesn't works
And I can do CRUD with categories.
So I think there is a probleme with my model Category but i don't understand
How do I go about using multiple Eloquent With()'s?
PortalPlaylistElement Model
class PortalPlaylistElement extends Model
{
public $primaryKey = 'code';
public $incrementing = false;
public $timestamps = false;
public function AirtimePlaylists()
{
return $this->hasOne('App\AirtimePlaylist','id','playlist_id');
}
}
AirtimePlaylistContent Model
class AirtimePlaylistContent extends Model
{
protected $table = 'cc_playlistcontents';
}
AirtimePlaylistModel
class AirtimePlaylist extends Model
{
protected $table = 'cc_playlist';
public function PortalPlaylistElements()
{
return $this->belongsTo('App\PortalPlaylistElement','playlist_id');
}
public function AirtimePlaylistContents()
{
return $this->hasMany('App\AirtimePlaylistContent','playlist_id');
}
}
I have no problems with:
AirtimePlaylist::with('AirtimePlaylistContents')->get());
or
PortalPlaylistElement::with('AirtimePlaylists')->get();
But I'd like to get all AirtimePlaylistContents, in an AirtimePlaylist that belongs to a PortalPlaylistElement.
In essence, (Pseudo code)
PortalPlaylistElement::with('AirtimePlaylists')::with('AirtimePlaylistContents')->get();
You need Nested Eager Looading
PortalPlaylistElement::with('AirtimePlaylists.AirtimePlaylistContents')->get();
nested relations
with('relation1.relation2.relation3')->get(); // relation1 has relation2 relation2 has relation 3
not nested relations
with('relation1','relation2','relation3')->get(); // you model has all relations
I would like to add this if someone needed it
with(['relation1.relation2-1','relation1.relation2-2'])->get(); // relation1 has relation2-1 and relation1 also has relation2-2
<?php
class Product extends Eloquent {
protected appends = array('category');
public function category()
{
return $this->belongsTo('Models\Category',
'category_id');
}
}
How to achieve that ?
<?php
class Product extends Eloquent {
protected $with = array('category');
//protected $appends = array('category');
public function category()
{
return $this->belongsTo('Models\Category',
'category_id');
}
}
Define a $with property instead of $appends property. It is an eager load.