I am making a game and I have users which have facilities and for this I use ManyToMany
user_facilities
-user_id
-facility_id
But each relation must have a facility level, so I've added facility_levels table and each of this levels must be connected to the ManyToMany relation. So user_facilities now looks like this
user_facilities
-user_id
-facility_id
-level_id
level_id is the connections between the facility which the user owns and which level it is.
My question is how do I connect this in the models?
The User model now has this
public function facilities()
{
return $this->belongsToMany('App\Facility', 'user_facilities');
}
And Facility
public function users()
{
return $this->belongsToMany('App\User', 'user_facilities');
}
So how do I get the level of the facility which the user owns?
In blade I hope there is a way I can use something like
{{ $user->facility->level->property }}
level is part of the user_facilities table not of facility
Therefore, you should be able to access the level_id from the many to many relationship of user and facility
One thing you can do is to access the immediate table (also called pivot table).
First, edit your relationship to include the extra attributes.
public function facilities()
{
return $this->belongsToMany('App\Facility', 'user_facilities')
->withPivot('level_id');
}
public function users()
{ // if you omit this EDIT/UPDATE, you cannot do this:
// $facility->users()->first()->pivot->level_id;
return $this->belongsToMany('App\User', 'user_facilities')
->withPivot('level_id');
}
Take note that when accessing a many to many relationship, Laravel will immediately assign a pivot attribute onto the result which contains details about the pivot table of the two models
Now try accessing the extra column:
$facility = $user->facilities->first();
$level_id = $facility->pivot->level_id;
// now you can use $level_id for finding the level.
$level = Level::find($level_id);
Now, since you can do that, you can also create a model for the many to many relationship of user and facility that will have that property of level_id
Let's create a new model called UserFacility that will extend Pivot.
This will be your Pivot model for many to many relationship of user and facilities.
use Illuminate\Database\Eloquent\Relations\Pivot;
class UserFacility extends Pivot
{
}
Then update your users and facilities relationships as follows.
public function facilities()
{
return $this->belongsToMany('App\Facility', 'user_facilities')
->using('App\UserFacility');
}
public function users()
{
return $this->belongsToMany('App\User', 'user_facilities')
->using('App\UserFacility');
}
Notice that using method.
$userfac = $users->facilities->pivot; // <-- pivot will now be an instance of App\UserFacility
echo $userfac->level_id;
Lastly,
If you don't want the pivot attribute name, you can change it using the as method, chain it after the belongsToMany method, like this:
public function users()
{
return $this->belongsToMany('App\User', 'user_facilities')
->as('UFac')
->using('App\UserFacility');
}
$userfac = $users->facilities->UFac; // <-- you can now access the pivot table using the property `UFac`
echo $userfac->level_id;
It may also be possible that your pivot table has a relationship with a level since it has a level_id. Don't worry, it's possible, just add this function in your UserFacility model.
public function level()
{
return $this->belongsTo('App\Level');
}
Now you can do this!
$user->facilities->first()->UFac->level; // <-- this will be an instance of App\Level
source: https://laravel.com/docs/5.5/eloquent-relationships#many-to-many
Related
I have a polymorphic relationship using a pivot table with some simple columns.
The pivot table has created_at and updated_at. Is there anyway I can set Accessors on those, so I can have them formatted in the collection without looping through it?
public function organization()
{
return $this->morphedByMany('App\Organization', 'relationship')->withPivot('relationship_level')->withTimestamps();
}
public function regions()
{
return $this->morphedByMany('App\Region', 'relationship')->withPivot('relationship_level')->withTimestamps();
}
public function groups()
{
return $this->morphedByMany('App\Group', 'relationship')->withPivot('relationship_level')->withTimestamps();
}
This is the code. I want when I try to access ->pivot->created_at to get it formatted in human way.
You can write an accessor on your polymorhic model, i.e.:
public function getFooAttribute()
{
return $this->pivot ? $this->pivot->created_at->format('Y-m-d') : 'pivot not loaded';
}
And access with $model->foo.
Remember that $model should be loaded by its Owner model so you have the pivot loaded, i.e.:
Region::with('polymorphic_models')->find($id);
And you have to define ->withPivot('relationship_level')->withTimestamps(); on both sides of the relationship.
In restaurant table, foreign key do not get value of user table. I make relation one to many in user and restaurant tables. user can have many restaurants.
class Restaurant extends Model
{
protected $guarded=['user_id'];
protected $table ="rest_info";
public function menus() {
return $this->hasMany('App\Menu');
}
public function dishes(){
return $this->morphMany('App\Dish','dishable');
}
public function user(){
return $this->belongsTo('App\User','id','user_id');
}
}
If you wish to access these relationship with in your controller function you can use with keyword of laravel you have to something like this:-
If you wish to get the menus you can use something like this in your contoller Function
$getResturantdata = Resturant::with('menus')->get();
dd($getResturantdata);
If you wish to get the menus and users both you can use something like this in your contoller Function:-
$getResturantdata = Resturant::with('menus','users')->get();
dd($getResturantdata);
I have read a few topics about this, but they managed to solve my problem partially ...
this is my controller
class DeskController extends BaseController{
public function getDeskUsers($deskId){
$user = DeskUserList::where(function($query) use ($deskId){
$query->where('deskId', $deskId);
})->with('userName')->get(array('deskId'));
if (!$user->isEmpty())
return $user;
return 'fail';
}
this is the model
class DeskUserList extends Eloquent {
protected $table = 'desk_user_lists';
public function userName(){
return $this->belongsTo('User', 'userId')->select(array('id','userName'));
}
}
the method getDeskUsers may returns ALL the DeskUserList table records, related with the User table record (on deskUserList.userId = User.id).
practically I want each record returned is composed of:
DeskUserList.deskId
User.userName
eg. [{"deskId":"1","user_name":antonio}]
What i get is
[{"deskId":"1","user_name":null}]
As you can see the user name is a null value...
BUT
if I edit my controller code:
->with('userName')->get(array('userId')); //using userId rather than deskId
then i get
[{"userId":"2","user_name":{"id":"2","userName":"antonio"}}]
By this way I still have two problem:
the userId field is twice repeated
I miss the deskId field (that I need...)
hope be clear, thanks for your time!
You need belongsToMany, no need for a model representing that pivot table.
I assume your models are Desk and User:
// Desk model
public function users()
{
return $this->belongsToMany('User', 'desk_user_list', 'deskId', 'userId');
}
// User model
public function desks()
{
return $this->belongsToMany('Desk', 'desk_user_list', 'userId', 'deskId');
}
Then:
$desks = Desk::with('users')->get(); // collection of desks with related users
foreach ($desks as $desk)
{
$desk->users; // collection of users for particular desk
}
// or for single desk with id 5
$desk = Desk::with('users')->find(5);
$desk->users; // collection of users
$desk->users->first(); // single User model
I have a model for user and annotations along with a pivot table user_like for storing annotations liked by user. The annotation table is also associated with another model (ranges) through hasMany relationship. I am trying to return all annotations along with its user, ranges and total number of likes.
The code below works for user, ranges and even likes. But, I am only interested in returning the count of likes and not the actual values (i.e. list of users liking the annotation). Is there a way to include just the counts for one of the models from the relations?
Eloquent query:
$annotations = Annotation::with('ranges')
->with('likes')
->with('author')
->where('document_id', $docid)->get()->toArray();
The model:
class Annotation extends Eloquent {
public function ranges()
{
return $this->hasMany('Range');
}
public function author()
{
return $this->belongsTo('User', 'user_id');
}
public function likes()
{
return $this->belongsToMany('User', 'annotation_like');
}
public function countOfLikes()
{
return $this->likes()->count();
}
}
If you want to retrieve count for multiple annotations using eager loading then you need the following 'helper' relation setup:
public function countLikesRelation()
{
return $this->belongsTo('User','annonation_like')->selectRaw('annotation_like, count(*) as count')->groupBy('annotation_like');
}
// then you can access it as such:
$annotations= Annotation::with('countLikesRelation')->get();
$annotations->first()->countLikesRelation->count;
// to make it easier, we create an accessor to the count attribute
public function getLikesCountAttribute()
{
return $this->countLikesRelation->count;
}
//And then, simply use
$annotations->first()->sectionsCount;
I have three models with Many to Many relationships: User, Activity, Product.
The tables look like id, name. And in the each model there are functions, for example, in User model:
public function activities()
{
return $this->belongsToMany('Activity');
}
public function products()
{
return $this->belongsToMany('Product');
}
The pivot table User_activity_product is:
id, user_id, activity_id, product_id. The goal is to get data like: User->activity->products.
Is it possible to organize such relations in this way? And how to update this pivot table?
First I suggest you rename the pivot table to activity_product_user so it complies with Eloquent naming convention what makes the life easier (and my example will use that name).
You need to define the relations like this:
// User model
public function activities()
{
return $this->belongsToMany('Activity', 'activity_product_user');
}
public function products()
{
return $this->belongsToMany('Product', 'activity_product_user');
}
Then you can fetch related models:
$user->activities; // collection of Activity models
$user->activities->find($id); // Activity model fetched from the collection
$user->activities()->find($id); // Activity model fetched from the db
$user->activities->find($id)->products; // collection of Product models related to given Activity
// but not necessarily related in any way to the User
$user->activities->find($id)->products()->wherePivot('user_id', $user->id)->get();
// collection of Product models related to both Activity and User
You can simplify working with such relation by setting up custom Pivot model, helper relation for the last line etc.
For attaching the easiest way should be passing the 3rd key as a parameter like this:
$user->activities()->attach($activityIdOrModel, ['product_id' => $productId]);
So it requires some additional code to make it perfect, but it's feasible.
The solution was found with some changes.
In the models relationships look like:
// User model
public function activities()
{
return $this->belongsToMany('Activity', 'user_activity_product', 'user_id', 'activity_id')->withPivot('product_id');
}
public function products()
{
return $this->belongsToMany('Product', 'user_activity_product', 'user_id', 'product_id')->withPivot('activity_id');
}
To update pivot table:
$user->products()->save($product, array('activity_id' => $activity->id));
- where product and activity ids I get from Input.
And, for example, to check if "user -> some activity -> some product is already exists":
if ($company->activities->find($activity_id)->products()->where('product_id', '=', $product_id)->wherePivot('company_id', $company_id)->get()->count() > 0) {
// code...
}
I think it needs improvements but it works for me now.