Quite new to Laravel and learning it now for work and just wonder, why do you have to use relationships, when you can simply use?
$n = Name::find(2)
$a = Address::where('name_id', '=', $n['id'])->get()
Instead of forming a relationship in the controller and:
$n = Name::find(2)
$n->address
Is it to less complicated somehow or is it just to reduce code or what?.
Any help appreciated and thanks in advance.
It is to write less code and to encapsulate things (write once and use everywhere)... those are the main principles in OOP... Your example is not so complicated. If a user has only one address you don't even need a separate model for adress, just put it in users table as an attribute...but imagine a relationship a Customer and Invoice... a Customer can have multiple Invoices and you want to show all invoices (with all the details) of a certain Invoice. It would require of you to write a lot of code to show all the details without making relationships between the models.
İf users have one adress, you dont need to new model. Just add 'address' column in your users table;
Here is your migration;
php artisan make:migration add_address_column_to_users_table
İf users have multiple adress, you can use one to many releationships.
Create address model and table,
php artisan make:model Address -m
Then in your Address model, add this function;
public function users()
{
return $this->belongsTo('App\User');
}
And in your User model;
public function address()
{
return $this->hasMany('App\Address');
}
Thats all. You can fnd more information in here
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!
I am new to Laravel but I dont think Im writing optimised code. I am looking at getting all overdue invoices separated by clients. Invoices table and clients table. client_id is within the invoices table. I have the following below but I wanted to know if there is a better way. I would also want to grab the client name from the clients table. I have created an array so I can loop throgh accordingly on the view file, but again im not sure this is the correct way?:
$overdueClients = Invoice::where("date_paid",'0000-00-00')->where("date_due","<=",date("Y-m-d"))->pluck('client_id');
foreach($overdueClients as $overdueClient)
{
$invoices = Invoice::select("title","total","on_account","date","date_due")->where("date_paid",'0000-00-00')->where("date_due","<=",date("Y-m-d"))->where('client_id',$overdueClient)->get();
$return[$overdueClient][] = $invoices;
}
return $return;
yes luckily there is a better way for which term is called relations and can use eager loading so what you can do is to make relation is models first :
so in you Invoice model you write something like below :
public function users(){
return $this->belongsTo('App/Users');
}
you should fix the above relation according to the name and path of your model and in your users model :
public function invoices(){
return $this->hasmany('App/Invoices');
}
so now an invoice belongs to a user and a user can Have many Invoices . and when you need to get the users which has invoices and overdue invoices you do like below :
$users = Invoices::with('users')->where("date_paid",'0000-00-00')->where("date_due","<=",date("Y-m-d"));
this is the better way to act because of preventing n+1 problems this way you only load users if they have overdue invoices if not they are not being loaded at all take a look at documentation below :
https://laravel.com/docs/7.x/eloquent-relationships#introduction
i strongly recommand to take time and read this and practice it as you would need it more that you think when you want to work with laravel . hope this helps
I have three tables: users, emails,attachments. User table is connected with emails by user_id. Emails table is connected with attachments by email_id.
My question is: How should I make it look eloquent in laravel to get all users their emails and their attachments? (I know how get all user and they emails but I don't know how to add attachments.)
Depending on your database relationship,you may declare a relationship method in your Email model, for example:
// One to One (If Email has only one attachment)
public function attachment()
{
return $this->hasOne(Attachment::class);
}
Otherwise:
// One to Many (If Email contains more than one attachment)
public function attachments()
{
return $this->hasMany(Attachment::class);
}
To retrieve the related attachment(s) from Email model when reading a user using id, you may try something like this:
$user = User::with('email.attachment')->find(1); // For One-to-One
$user = User::with('email.attachments')->find(1); // For One-to-Many
Hope you've already declared the relationship method in the User model for Email model using the method name email.
Note: make sure, you have used right namespace for models. It may work if you've done everything right and followed the Laravel convention, otherwise do some research. Also check the documentation.
Im at a bit of a loss. I have an api that will create a user upon a request. This is done no problem.
I also want to create another controller action or add to my current action the ability to create an address for the same user.
Is there an easy way to do this? Or should I stick to the
$user = new User(Input::all());
$user->save();
$address = new Address(Input::all());
$address->save();
You should set up relationships between your User and Address model - http://laravel.com/docs/eloquent#relationships and use associate/sync() to connect the dots.
This is a relationship problem. An address to a user will most likely be One-to-One (i.e., each Userhas a unique Address). A User might have an Address, but an Address must have a User. So in essence, the Address belongs to User.
Create two tables users and addresss, and add user_id to the address table as a column.
Then you define your relationships:
// In your User.php model
public function address()
{
return $this->hasOne('Address');
}
// In your Address.php model
public function user()
{
return $this->belongsTo('User');
}
Note when you use the correct notation, you can just define the model name, and not specify the pivot column. That is why I have defined the class addresss with an extra 's' to make it plural. I personally don't care about the spelling and rather Laravel take care of everything. Otherwise read the documentation on how to define the pivot column
Then you can use associate easily:
$user = new User();
// Fill $user however you want
$address = new Address();
// Fill $address however you want
$user->associate($address);
$user->save();
I was able to figure it out!
I wound up utilizing the Ardent package to help me validate my models before they hit the save method.
if my models didnt validate i will return all the errors to the user.
If they did validate my models would be created.
As for the association I am using the has many relation ship on the User and belongs to on the Address.
I used the following to save the address to the user
$address = $user->address()->save($address);
however I could only preform this after the initial user object was saved.
Thanks for all the responses guys they lead me in the right direction!