I have this model:
class Ownership extends Eloquent {
protected $table = 'game_user';
public function games() {
return $this->belongsToMany('Game');
}
public function type() {
return $this->belongsToMany('owntype');
}
}
Models for Game and Owntype are simple ...extends Eloquent. This is how I pull the data:
$games = Ownership::with('games','type')->where('user_id','=','1')->get();
Theoretically, it works. Practically, not, because it returns empty games and owntype collections. Here's what it returns: http://paste.laravel.com/s94
How can I get games and users table contents? I don't want to Game::find in foreach, because it would produce a lot of queries.
You need to pass an array inside with().
I.e.
$games = Ownership::with(array('games','type'))->where('user_id','=','1')->get();
Related
I have 3 way relationship firstl i have get code like this in a controller
Trial::with('subjects')->where('source_id', $sourceId)->get()->toArray()
Now I want to sort subject.reactions on desc order of subject.reactions.accounts.nb_followers column. I tried to use orderby on relationship but it does not work because it sorting account indsted on reactions. I want to sort reaction based on value of "nb_followes" column present inside account table.
Trail Model
class Trial extends Model
{
use HasFactory;
public $table = 'trials';
public function subjects()
{
return $this->hasMany(Subject::class, 'trial_id')->with(['reactions', 'news'])->withCount('reactions');
}
}
Subject Model
class Subject extends Model
{
use HasFactory;
public $table = 'subjects';
public function reactions()
{
return $this->hasMany(Reaction::class, 'subject_id', 'id')->with(['accounts' => function ($q) {$q->orderBy('nb_followers', 'DESC');}])->where('twitter_error', 0)->where('active', 1)->orderby('key_reaction', 'DESC');
}
public function news()
{
return $this->hasone(News::class, 'id', 'news_item_id');
}
Reaction Model
class Reaction extends Model
{
use HasFactory;
public $table = 'reactions';
public function accounts()
{
return $this->belongsTo(Account::class, 'account_id', 'id')->where('name', '!=', '');
}
Thank you in Advance.
I want to sort reactions based on account table's column yes i cant use simple eloquent query because it will not create a structure that i want so that's why i created these relationships.
first you need to loop over trails using map method
second you need to use transform method to transform your subject in
sorted manner
as show in Subject model you need sort reaction by key_reaction
feild
$trails = ViewTrial::with('subjects')->where('source_id', $sourceId)->get();
$trails->map(function($trails){
return $trails->subjects = $trails->subjects->transform(function (&$subject) {
return [
"column" => $subject->column,
"reactions" => $subject->reactions->sortByDesc(function ($reactions) {
return $reactions['accounts']['nb_followers'];
})->sortByDesc('key_reaction')->values()->all()
]
})->values();
});
return $trails->toArray();
is it possible to disable the loading of relationships, but only in some cases?
Here are my models:
class League extends Model
{
...
public function country()
{
return $this->belongsTo(Country::class)->with('translations');
}
}
class Country extends Model
{
...
public function translations()
{
return $this->hasMany(CountryTranslation::class, 'country_id');
}
}
class CountryTranslation extends Model
{
...
}
In many places, I need to load the translations relationship for Country, but on some pages, I want to display information about the League and its Country only. There I don't want to show the CountryTranslation collection.
Here is the code for that page:
$country = $league->country;
Is it possible only for this line to disable the relations?
So, you're currently finding out one of the reasons for not defining the eager loading inside of the relationship. The first suggestion would be to remove the with() from the relationship definition, and add it in where needed. If desired, you can create another relationship that has the eager loading enabled, and it can use the base relationship to keep it DRY:
public function country()
{
return $this->belongsTo(Country::class);
}
public function countryWithTranslations()
{
return $this->country()->with('translations');
}
If this code change is not feasible, you will need to change how you're accessing the country relationship. When you access the relationship attribute, it lazy loads the relationship, and you don't have the ability to modify the relationship query. So, instead of accessing the relationship attribute, you'd need to call the relationship query so you can modify it.
Therefore, you won't be able to do $country = $league->country;, but you can do:
$country = $league->country()->without('translations')->first();
he with() simply eager loads the translations to avoid additional queries, but you should be able to load the translations with and without it, without with( adds additional queries. https://laravel.com/docs/9.x/eloquent-relationships#eager-loading
You will want to change:
public function country()
{
return $this->belongsTo(Country::class)->with('translations');
}
to
public function country()
{
return $this->belongsTo(Country::class);
}
If you want to load translations, you can do it in the controllers
// if you want translations at some point do this:
$league = League::with('country.translations')
$country = $league->country->translations
// if you do not want translations
$league = League::with('country')
$country = $league->country;
If you do not want to touch:
public function country()
{
return $this->belongsTo(Country::class)->with('translations');
}
you can create another method
public function countryClean()
{
return $this->belongsTo(Country::class);
}
$country = $league->countryClean;
I am writing a Laravel application that manages training courses.
Each course is represented by a Course model.
A course can have many dates - these are represented by a CourseDate model, with a hasMany relationship between the two:
Each course also has a single "date template", which is a CourseDate, but with an "is_template" boolean set.
I want to create an accessor on the Course model that retrieves its date template.
The (relevant) code for each model is:
class Course extends Model {
public function getDateTemplateAttribute() {
$dates = $this->dates;
$filtered = $dates->where('is_template', true);
$template = $filtered->first();
return $template;
}
public function dates() {
$result = $this->hasMany( CourseDate::class );
return $result;
}
}
class CourseDate extends Model {
public function course() {
return $this->belongsTo( Course::class );
}
}
Then, in my controller, I have this:
// this block works absolutely perfectly
$course = Course::find(1);
$dates = $course->dates;
$working_date_template = $dates->where('is_template', true)->first();
// this one doesn't work at all and says "call to a member function first() on array"
$broken_date_template = $course->date_template;
Stepping through with xdebug in the broken code, the line $dates = $this->dates returns an empty array so everything else afterwards breaks.
Is this a limitation with the Laravel accessor/relationship system? Or am I just being dense and doing something wrong.
I worked this out just now.
I needed to use $this->dates() within the model itself as this returns the relationship and I can then filter it out accordingly using the where() method and other query builder methods.
This was, of course, mentioned in the Laravel documentation - I just didn't spot it.
I am using Laravel 4.2.
I have two models: User and Video, both of these models are having one-to-many relationship i.e. User -> HasMany-> Video.
Recently, I got a requirement to display the list of users along with sum of file-size of total videos uploaded by each user and allow users to be order by the sum of file size ascending or descending.
I've made following changes in User model:
class User extends Eloquent {
protected $hidden = array('videosSum');
protected $appends = array('videos_size');
public function videosSum() {
return $this->hasOne('Video')
->selectRaw('sum(file_size) as sum, user_id')
->groupBy('user_id');
}
public function getVideosSizeAttribute()
{
// if relation is not loaded already, let's do it first
if ( ! array_key_exists('videos_size', $this->relations)){
$this->load('videosSum');
}
$related = $this->getRelation('videosSum');
return $this->attributes['videos_size'] = isset($related->sum) ? (int) $related->sum : 0;
}
}
And using like:
User::where('id', '!=', Auth::user()->id);
I am getting the desired result.
But the problem is, I don't want the videos_size attribute everywhere, where the User model gets called. I want to set it dynamically.
I tried User::$appends = ['videos_size'] but it gives protected property cannot be set outsize of class error.
I also tried to make a method in User model which set the $appends if called, but it is also not working.
Can anybody help me how to enable the appends property dynamically?
Laravel doesn't support this off the bat.
my friend and I wrote this extention:
Dynamically hide certain columns when returning an Eloquent object as JSON?
basically you have to override your models.php toArray() method as appended attributes get calculated when you ask for the model in json or array form.
you can add to the trait that's in that link and use it or just put these methods in your respective model class.
public static function getStaticAppends() {
return self::$_appends;
}
public static function setStaticAppends(array $value) {
self::$_appends = $value;
return self::$_appends;
}
public static function getDefaultAppends() {
return with(new static)->getAppends();
}
public function getAppends(){
return $this->appends;
}
public function toArray() {
if (self::getStaticAppends()) {
$this->appends = self::getStaticAppends();
}
return parent::toArray();
}
hi sorry bit of a newbie here but I am have three tables users, profiles, friends. they all have the user_id fields within them and I want fetch all of the fields in one statement using Eloquent and not DB::statement and doing the table joins.
How can I achieve this?
Try this
use the User class and the with method that laravel has to query model relationships
$user = User::with(['profile', 'friend'])->get();
Ensure your models has the correct relationships as follows:
app/models/User.php
public function friend () {
return $this->hasMany('Friend');
}
public function profile () {
return $this->hasOne('Profile');
}
app/models/Profile.php
public function user() {
return $this->belongsTo('User');
}
app/models/Friend.php
public function user() {
return $this->belongsTo('User');
}
use some thing like this:
You should define relations in your models with hasOne, hasMany.
class Review extends Eloquent {
public function relatedGallery()
{
$this->hasOne('Gallery', 'foreign_id', 'local_id');
}
}
class Gallery extends Eloquent {
public function relatedReviews()
{
$this->hasMany('Review', 'foreign_id', 'local_id');
}
}
$gallery = Gallery::with('relatedReviews')->find($id);
Will bring the object Gallery with
$gallery->id
gallery->name
...
$gallery->relatedReviews // array containing the related Review Objects