I have two Models, Account and Contractor. An account(user) can be a contractor so I created a recursive relationship. The Contractor model look like this.
class Contractor extends Model
{
protected $table = "contractors";
public function user()
{
return $this->belongsTo("\App\Account", "user_id", "id");
}
}
Having in mind that an account has the next fields
Account
id
passwd
name
I would like to retrieve contractors with its fields and the user fields merged just as if they where the same, like that:
Contractor
id
passwd
name
contractor_type
I don't want to do:
\App\Contractor::with('user')->first();
I would like to retrieve all fields with
\App\Contractor::first()
is possible to achieve that by overriding some method or in some tricky way?
You need a join statement to achieve this. Something along these lines (there is inner, left and right join, I'm not sure which one suits you best).
$contractor = \App\Contractor::join('users', 'contractors.user_id', '=', 'accounts.id')
->select('accounts.id', 'contractors.user_id', 'accounts.id', 'accounts.passwd', 'accounts.name', 'contractors.contractor_type')
->first();
I assumed table names "accounts" and "contractors".
I think your query like:
$rsltContractors = \App\Contractor::selectRaw('accounts.id', 'accounts.passwd', 'accounts.name','contractors.id','contractors.user_id','contractors.name','contractors.contractor_type')
->join('accounts', 'accounts.id', '=', 'contractors.user_id')->first();
Hope this work for you!
Related
I have a model User with fileds like - colorhair_id, nationality_id, etc. Of course I have a relationship to other model. Problem is that I want to return nationality from User i must do that:
User::find(1)->colorhair->name
In next time I need to use
User::find(1)->nationality->name
It works but it's not look professional and it's dirty. How can I change query or something else to return object with repleace field like nationality_id to nationality with name of that. Any idea?
You can use Laravel Mutators. Put below two functions into the User model
public function getHairColorNameAttribute(){
return $this->colorhair->name
}
public function getNationalityNameAttribute(){
return $this->nationality->name
}
Then when you simply access it.
User::find(1)->hair_color_name;
The next time
User::find(1)->nationality_name;
If you want to get these values by default use $append in the model. Put the following line to the top of the User model
protected $appends = ['hair_color_name','nationality_name'];
Note: In laravel 9 mutators little bit different from the above method.
Bonus Point :
if you access values in the same scopes don't use find() method in each statement.
$user = User::find(1);
then
$user->hair_color_name;
$user->nationality_name;
strange question:
I have 3 Models
Order
with id as PK
Orderline
with id as PK and order_id as FK. brand and partnumber are two separatet colums
Article
with combined PK brand and partnumber
**which is on another database **
One Order hasMany Orderlines. Every Orderline hasOneArticle.
i had make a function within order:
public function articles()
{
$foreignKeys = [
'brand_id',
'article_number',
];
$localKeys = [
'brand',
'partnumber',
];
return $this->hasManyThrough('App\Models\Masterdata\Articles','App\Models\Oms\OrderLine',$foreignKeys,$localKeys,'id','id');
}
How can i retrieve all Attributes from articles through Order?
I tried something like this:
$order = Order::find($orderid)->articles();
dd($order);
//did not work
$order = Order::with('orderlines.articles')->where('id','=',$orderid)->get();
Do you have an idea for me?
You can configure more than one database in the database.php config, and specify the $connection name in the Model class.
For the most part, Eloquent doesn't do JOINs, it just does IN statements on the key values from the preceding query, and programmatically marries the results together after the fact. Partly to avoid the mess of keeping table aliases unique, and partly to offer this kind of support- that your relations don't need to live in the same database.
In other words, what you have there should work just fine. If there's a specific error getting thrown back though, please add it to your post.
I am trying to query data from my database and pass the results to a view called events, the problem I have is that one of my queries will always return the same result because in the where condition the $events_id is the same always. Is there a better way to do the querying? A better logic?
This code is from my controller called EventController:
public function index()
{
$firm_id = DB::table('firms')->where('user_id', auth()->id())->value('id');
$events_id = DB::table('events')->where('firm_id', $firm_id)->value('id');
$events = DB::table('events')->where('firm_id', $firm_id)->get()->toArray();
$actual_events = DB::table('actual_events')->where('event_id', $events_id)->get()->toArray();
return view('events',['events' => $events,'actual_events' => $actual_events]);
}
Since the $events_id is the same every time, the $actual_events will only contain the first result.
The image I have uploaded shows the problem, my table's first three columns are fine. Starting from the fourth they contain repeated values:
As I guess, you need something like this:
$event_ids = DB::table('events')->where('firm_id', $firm_id)->pluck('id');
$actual_events = DB::table('actual_events')->whereIn('event_id', $event_ids)->get()->toArray();
or write about your problem in details and I will try to help you.
you just said that your tables have relation together.
in this case it's better you using the eloquent for that,
first you should type the relations in model of each table like this:
class User extends Authenticatable{
public function cities()
{
return $this->hasmany('App\City'); //you should type your relation
}
}
for relations you can use this link: laravel relationships
after that when you compact the $user variable to your view, you can use this syntax for getting the city value relation to this user: $user->cities;.
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'm using laravel and eloquent.
Actually I have problems filtering results from a table based on conditions on another table's attributes.
I have 3 tables:
venue
city
here are the relationships:
a city has many locations and a location belongs to a city.
a location belongs to a venue and a venue has one location.
I have a city_id attribute on locations table, which you may figured out from relationships.
The question is simple:
how can I get those venues which belong to a specific city?
the eloquent query I expect looks like this:
$venues=Venue::with('location')->where('location.city_id',$city->getKey());
Of course that's not gonna work, but seems like this is common task and there would be an eloquent command for it.
Thanks!
A couple of options:
$venues = Venue::whereIn('location_id', Location::whereCityId($city->id)->get->lists('id'))
->get();
Or possibly using whereHas:
$venues = Venue::whereHas('location', function($query) use ($city) {
$query->whereCityId($city->id);
})->get();
It is important to remember that each eloquent query returns a collection, and hence you can use "collection methods" on the result. So as said in other answers, you need a Eager Loading which you ask for the attribute you want to sort on from another table based on your relationship and then on the result, which is a collection, you either use "sortBy" or "sortByDesc" methods.
You can look at an example below:
class Post extends Model {
// imagine timpestamp table: id, publish, delete,
// timestampable_id, timestampble_type
public function timestamp()
{
return $this->morphOne(Timestamp::class, 'timestampable');
}
}
and then in the view side of the stuff:
$posts = App\Post::with('timestamp')->get(); // we make Eager Loading
$posts = $posts->sortByDesc('timestamp.publish');
return view('blog.index', compact('posts'));