I need to create relationships between users. As you might expect, they exist in the users table. My approach is a relationships table linking user_a_id to user_b_id.
Then, in the User model, I added:
public function relationships()
{
return $this->belongsToMany('User', 'relationships', 'user_a_id', 'user_id');
}
Unfortunately, I get an error when trying to find the relationships;
dd($user->relationships);
Output: Whoops, looks like something went wrong.
I would consider something like a "user" model, and a "group" model. The users table can have a many-to-many relationship with the groups table, and this could be defined with a "user_group" table, containing a column "user_id" and another "group_id". Then you can have a function in your User model called groups, which does return $this->belongsToMany('Group');, and a function in your Group model called Users, which goes return $this->belongsToMany('User');
Refer to this section of the Eloquent docs for further direction.
Related
I just started my first laravel project today and stumbled upon this confusing situation,
I intended to use eloquent relationship instead of manually joining tables on query. So here it goes...
I have 3 tables which are users , tbl_instruments_taught , tbl_instruments
users table does not hold any of the table's ID,
tbl_instruments_taught - holds the id of user and intruments
Note: user can teach multiple instruments
Now, I implemented a hasOne on my other result set but I dont think hasOne works on this one. I read about belongsToMany but as I try implement it, it seems like every minute, it gets confusing.
Any idea?
I think you are looking for pivot table and relation many to many.
You have users table, instruments table (user has many instruments and one instrument could belong to many users) and user_instruments pivot table. Here db model:
And then add belongsToMany relationship in User and Instrument model (with specified pivot table). Like so:
//IN USER MODEL
public function instruments()
{
return $this->belongsToMany('App\Models\Instruments', 'users_instruments', 'user_id', 'instrument_id');
}
//IN INSTRUMENT MODEL
public function users()
{
return $this->belongsToMany('App\Models\Users', 'users_instruments', 'insrument_id', 'user_id');
}
Now you can reach instruments/users data through laravel relations/eager loading.
I'm having a problem. I have tables that relate:
internal_clients->subsidiaries->departments->job_titles->users
I also have their respective models.
My doubt is:
How do I get all the data associated with users from the top of the tree (internal_clients)
?
I'm trying to follow the Laravel documentation using hasManyThrough.
However, in the documentation it explains only how to do it in a chain of three tables. They teach how to place an intermediate table (model) as the second parameter of the hasManyThrough method (BaseClasse::class, IntermediaryClass::class).
However, in my case that has several tables between users and internal_clients, how would I do this? What would be the intermediate table?
I would like to make a query that returns the user's internal_client, subsidiary, department and jobTitle (associated with users).
I'm trying to do it this way:
Model InternalClient
public function users()
{
return $this->hasManyThrough(User::class, InternalClient::class);
}
Controller UserController
public function allRelations($internalClientId)
{
$internalClient = InternalClient::find($internalClientId);
$users = $internalClient->users;
return response()->json($users, 201);
}
The InternalClient id arrives at the controller above.
When I access the route, the error below is returned:
In short: I would like to know if there is a way to get all the data (from all tables that are in this hierarchical tree) that are associated with the User.
I couldn't find an answer on the Stackoverflow PT-BR.
Thank you!
Could anyone please tell me how to create a relation between 3 tables.I have 3 tables. User, Profile and Post. Now I want to list all posts on the home page with user name form users table and profile image from the profiles table and posts from posts table.
There are few things to consider before suggesting any code. Your database structure, eloquent model classes and any other condition you want to apply before getting posts from database.
Hope, your profiles and posts table (both) contains user_id field.
You have to define two relationships.
In Post model define:
public function user() {
return $this->belongsTo('App\User');
}
In User model define:
public function profile() {
return $this->hasOne('App\Profile');
}
Now, before forwarding your $posts to view you may run this statement:
$posts->load('user.profile);
This will load relevant user and their profile within posts. Like this:
posts:[
{...,
user:{
...,
profile:{...}
}
},
...
]
Further reading recommended:
Belongs To Relationships
Nested Eager Loading
I have Order model with another relation OrderPhoto:
public function OrderPhoto()
{
return $this->hasMany('App\OrderPhoto');
}
In turn OrderPhoto model has relation:
public function Photo()
{
return $this->belongsToMany('App\Photo');
}
So, how to get data from OrderModel with related data from third model Photo?
I guess this:
Order::with("OrderPhoto.Photo")->get();
to retrieve only data from Photo model for each Order
So, each Order has some OrderPhotos. Relationship is one to many.
But one item from OrderPhotos is related with primary key from table Photos. It is one to one relation.
My result query should be:
select `photos`.*, `ordersphoto`.`Orders_Id` from `photos` inner join `ordersphoto` on `ordersphoto`.`Photos_Id` = `photos`.`Id` where `ordersphoto`.`Orders_Id` in (1);
How to use hasManyThrough for this query?
Just having a quick look at your relationships it looks like you could create a hasManyThrough relationship on the order Model.
public function Photo {
return $this->hasManyThrough('App\OrderPhoto', 'App\Photo')
}
You may need to add the table keys to make it work
This will allow you to do:
Order::with("Photo")->get();
You can see more details here https://laravel.com/docs/5.5/eloquent-relationships#has-many-through
Update
Try this
public function Photo {
return $this->hasManyThrough('App\Photo', 'App\OrderPhoto', 'Order_id', 'Photos_id', 'id', 'id')
}
It is a little hard to get my head around your DB structure with this info but you should hopefully be able to work it out. This may also help
https://laravel.com/api/5.7/Illuminate/Database/Eloquent/Concerns/HasRelationships.html#method_hasManyThrough
I am working in laravel5.4. I have created four table as ticket, users, and company. Here, I have stored users id in ticket table. And stored company id in users table.
Here, I want to show ticket's user name with that users company name.
Here, I have create relation for it that looks like below.
Ticket model :
public function requesters(){
return $this->belongsTo('App\User','requester_id');
}
Here requester_id is who create ticket.
Users model :
public function company()
{
return $this->belongsTo('App\Models\Admin\Company');
}
Company model :
public function Users()
{
return $this->hasOne('App\Users');
}
Here, I have written query to get users information that looks like below.
Ticket::with('requesters')->orderBy('subject','asc')->paginate(10);
Now, I want to fetch company information or request_id So what changes should I have to do in this query to fetch company info along with ticket and users ?
If you want to to Eager load multiple relationship you can put them all in single with like this:
Ticket::with('requesters','requesters.company')->orderBy('subject','asc')->paginate(10);
but if you load nested relationship you can use shorter notation - you can omit parent relationship, so it's enough to use here:
Ticket::with('requesters.company')->orderBy('subject','asc')->paginate(10);
Try this, it should work for this case:
Ticket::with('requesters')
->with('requesters.company')
->orderBy('subject','asc')->paginate(10);