I have the following eloquent query that has two withs but wants the query more specific.
So far I have:
$club_models = \App\Models\Clubs\Club::whereActive(1)
->with('group_ex_pro_id')
->with('campaigns')->get();
I'd like it to be the below but am getting an error:
$club_models = \App\Models\Clubs\Club::whereActive(1)
->with('group_ex_pro_id')
->with('campaigns')->whereHas('new-campaign-name')->get();
I ultimately want it to include campaigns but want it to be where campaigns have the specific new-campaign-name name
I don't think you need both with and whereHas together. Assuming the campaign name you'd like the campaigns to be is stored in $campaignName, try this:
$club_models = \App\Models\Clubs\Club::whereActive(1)
->with('group_ex_pro_id')
->whereHas('campaigns', function (Builder $query) use ($campaignName) {
$query->where('new-campaign-name', $campaignName);
})->get();
Related
How do you return a collection of a grouped dataset in a ManytoMany relationship with this scenario?
Here is a sample of what dataset I want to return
So let's take the favorites as the genres and the highlighted date is the genres name, it's also a collection as well. I want to group it based on the genres name in that collection.
My model:
Video
```
public function genres() {
return $this->belongsToMany(Genre::class);
}
```
Genre
```
public function videos() {
return $this->belongsToMany(Video::class);
}
```
I tried the following already but can't seem to get it.
```
$videos = Video::with('genres')->all();
$collection = $videos->groupBy('genres.name');
```
I want to group the dataset by the genres name knowing the genre's relationship is also a collection of genres.
Try something like:
Video::with('genres')->get()->groupBy('genres.*.name');
Or:
$videos = Video::with('genres')->all();
$collection = $videos->groupBy('genres.*.name');
Note that above is code you posted, just after replacing "genres.name" with "genres.*.name".
Just noticed the post is old, this at least works on latest Laravel.
Collections and query builders share many similar functions such as where() groupBy() and so on. It's nice syntax sugar, but it really does obscure the underlying tech.
If you call $model->videos... like a property, that's a collection (query has executed).
If you call $model->videos()... like a method, that's a query builder.
So if you want to get the job done in sql, you can do something like...
$video_query_builder = Video::with('genere');
$video_query_builder->groupBy('genere_id');
$result = $video_query_builder->get();
You can chain it all together nice and neatly as was suggested in the comments... like this:
$result = Video::with('genere')
->groupBy('genere_id')
->get();
I've got a collection of records retrieved via a relationship, and I'd like to order them by the created_at field. Is this possible in Eloquent?
Here is how I am retrieving the collection:
$skills = $employee->skills;
I'd like to order this $skills collection by their creation. I've tried $skills->orderBy('created_at', 'desc'); but the Collection class does not have an orderBy method.
I guess this problem is very simple and I'm missing something..
You can do this in two ways. Either you can orderBy your results while query, as in
$employee->skills()->orderBy('created_at', 'desc')->get();
OR
You can use sortBy and sortByDesc on your collection
The reason this is failing is that orderBy is a query method not a collection method.
If you used $skills = $employee->skills()->orderBy('created_at', 'desc')->get();, this would query the skills in the order you want.
Alternatively, if you already had a collection that you wanted to re-order, you could use the sortBy or sortByDesc methods.
You need to add the orderBy constraint on the query instead of the relationship.
For e.g,
$employees = Employee::where('salary', '>', '50000') // just an example
->with('skills') // eager loading the relationship
->orderBy('created_at', 'desc')
->get();
and then:
foreach($employees as $employee)
{
var_dump($employee->skill);
}
If you want the results to always be ordered by a field, you can specify that on the relationship:
Employee.php
public function skills() {
return $this->hasMany(Skills::class)->orderBy('created_at');
}
If you just want to order them sometimes, you can use orderBy(), but on the relationship, not the property:
$skills = $employee->skills()->orderBy('created_at')->get();
Collection has sortBy and sortByDesc
$skills = $skills->sortBy('created_at');
$skills = $skills->sortByDesc('created_at');
This Stackoverflow question askes how to order an Eloquent collection. However, I would like to propose a different solution to use instead given the example in the question. I would like to recommend to use an ordering on the query itself for performance reasons.
Like #Don't Panic proposes you can specify a default ordering on the relationship for great reusability convenience:
app/Models/Employee.php
public function skills() {
return $this->hasMany(Skills::class)->orderBy('created_at');
}
However, if you have already set an ordering on your query like we do in the code above, any additional orderings will be ignored. So that is a bummer if you want to use a different sorting in another situation. To overwrite this default ordering and re-order the query with a new ordering, one needs to use the reorder() method. For example:
// Get a Collections of Skill-models ordered by the oldest skill first.
$skills = $employee->skills()->reorder()->orderByDesc('created_at')->get();
// Same result as the previous example, but different syntax.
$skills = $employee->skills()->reorder()->oldest()->get();
// Or just give some arguments to the reorder() method directly:
$skills = $employee->skills()->reorder('created_at', 'desc')->get();
I am trying to get two related objects in Laravel using eager loading as per documentation.
https://laravel.com/docs/5.4/eloquent-relationships#eager-loading
My models are:
class Lead extends Model {
public function session() {
return $this->hasOne('App\LeadSession');
}
}
class LeadSession extends Model {
public function lead() {
return $this->belongsTo('App\Lead');
}
}
I want to get both objects with one SQL query. Basically I want to execute:
select * from lead_sessions as s
inner join lead as l
on l.id = s.lead_id
where s.token = '$token';
and then be able to access both the LeadSession and Lead objects. Here is the php code I am trying:
$lead = Lead::with(['session' => function ($q) use ($token) {
$q->where('token','=',$token);
}])->firstOrFail();
print($lead->session->id);
I have also tried:
$lead = Lead::whereHas('session', function($q) use ($token) {
$q->where('token','=',$token);
})->firstOrFail();
print($lead->session->id);
and
$session = LeadSession::with('lead')->where('token',$token)->firstOrFail();
print($session->lead->id);
In all three cases I get two queries executed, one for the leads table, and another for the lead_sessions table.
Is such a thing possible in Eloquent? In my view it should be a standard ORM operation, but for some reason I am struggling a whole day with it.
I don't want to use the Query Builder because I want to use the Eloquent objects and their functions afterwards.
I am coming from Python and Django and I want to replicate the behavior of select_related function in Django.
Try this and see if it makes more than one query
$session = LeadSession::join('leads', 'leads.id', '=', 'lead_sessions.lead_id')
->where('token',$token)
->firstOrFail();
I hope it only runs a single query. I didnt test this. Not sure if you have to add a select() to pick the columns. But yeah, try this first.
Updates
Just adding how to use both session and lead data. Try a select and specify the data you need. The reason being that if both tables have similar columns like 'id', one of them will be overwritten. So you have to alias your select like
$session = LeadSession::join('leads', 'leads.id', '=', 'lead_sessions.lead_id')
->where('token',$token)
->select(
'lead_sessions.*',
'leads.id as lead_id',
'leads.name',
'leads.more_stuff'
)
->firstOrFail();
Now all this data belongs to $session variable. For testing you were doing
print($lead->session->id);
//becomes
print($session->lead_id); //we aliased this in the query
My laravel app structed like this:
People: Model & Controller
Pets: Model & Controller. Has many to many relationship with People.
Abiilities: Model & Controller.
People_pets: People pets. (pivot table with people_id and pet_id). Also has 4 columns of abbility1_id, abbility2_id, abbility3_id and abbility4_id.
Now.. I built an API method to return the user pets, and it looks like this:
public function pets()
{
return $this->belongsToMany(Pet::Class, 'user_pets')->withPivot(
'abbility1_id',
'abbility2_id',
'abbility3_id',
'abbility4_id'
)->orderBy('position','asc');
}
which makes $user->pets returns the user list of pets, with the pivot information of user_pets and the abbility ids.
The question
What I want to do is add a json object to this method result named "abbilities" and get the data of the abbilities there such as name and description from the Abbilities model/controller.
How I can add the abbilities information to my query out of just the ID's?
The output of the current API CALL:
Desired output: array of Abbilities inside every pet object with the detail of the attack_id's inside $user->pets->pivot->attack1_id
You could just use the query builder and orWhere to grab the data. I don't think you can access it through relationships with the way you have it set up.
I don't know how you access your pet ability ids, but I'm guessing it's like $pet->abbility1_id.
$abbilities = Abbilities::where('id', '=', $pet->abbility1_id)
->orWhere('id', '=', $pet->abbility2_id)
->orWhere('id', '=', $pet->abbility3_id)
->orWhere('id', '=', $pet->abbility4_id)
->get();
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'));