I need to be able to convert a hasMany() relation, which queries and return an array into a hasOne() relation which returns object|null.
Use case:
public function getItems() : \yii\db\ActiveQuery {
return $this->hasMany(Item::class, ['parent_id' => 'id']);
}
I want to create a relation which returns one specific Item object (or null if it does not exist).
I would like to do something like this:
public function getPrimaryItem() : \yii\db\ActiveQuery {
return $this->getItems()->andWhere(["primary"=>true])->toHasOne();
}
Please do not tell me to call ->one() on the original query, because that is not going to solve the problem. I need to be able to:
call $model->primaryItem and receive either Item or null
call $model->getPrimaryItem() and receive the relation's ActiveQuery
You can toggle it by multiple property of \yii\db\ActiveQuery
public function getPrimaryItem() : \yii\db\ActiveQuery {
$query = $this->getItems();
$query->multiple = false;
//Your logics
$query->andWhere(["primary"=>true])
return $query;
}
Related
I have these relationship between school and associate models:
// School model
public function associates()
{
return $this->belongsToMany('Associate', 'school_associate', 'school_id', 'associate_id')
->withPivot('start_date', 'end_date');
}
// Associate model
public function schools()
{
return $this->belongsToMany('School', 'school_associate', 'associate_id', 'school_id')
->withPivot('start_date', 'end_date');
}
I need to get all associates of one school ordered by start_date.
This is what I tried without success (in this try I am searching in all schools):
dd(\App\Associate::with(['schools' => function ($q) {
$q->orderBy('pivot_start_date', 'desc');
}])->toSql());
And I get this sql (notice no order by clause):
select * from `associate`
I tried to edit the relationship like this:
// Associate model
public function schools()
{
return $this->belongsToMany('School', 'school_associate', 'associate_id', 'school_id')
->withPivot('start_date', 'end_date')
->orderBy('pivot_start_date', 'desc'); // also tried without "pivot_"
}
And according to this post, I also tried :
// Associate model
public function schools()
{
return $this->belongsToMany('School', 'school_associate', 'associate_id', 'school_id')
->withPivot('start_date', 'end_date')
->orderBy('school_associate.start_date', 'desc');
}
But I always get the same query and the results are not ordered.
I solved using query builder in this way.
This function is in Associate model:
public function scopeLast($query, $school_ids = [])
{
$query->join('school_associate', "{$this->table}.{$this->primaryKey}", '=', 'school_associate.associate_id')
->join('school', 'school.school_id', '=', 'school_associate.school_id')
->whereIn('school.school_id', $school_ids)
->orderBy('school_associate.start_date', 'desc');
return $query;
}
I have a customer table which has a field called 'policy_id', where policy_id points to policy table. It is a null-able field, ie. Some customers may not have a policy.
I have a relationship code like this in Customer.php
public function policy() {
return $this->hasOne('App\Models\Policy', "id", "policy_id");
}
But when I issue a search request I am getting error like this:
Illuminate\Database\Eloquent\ModelNotFoundException: No query results for model [App\Models\Policy]
If I modify the function like this:
public function policy() {
if ($this->getAttribute('policy_id')) {
return $this->hasOne('App\Models\Policy', "id", "policy_id");
} else {
return null
}
}
But I am getting an error like this:
Call to a member function getRelationExistenceQuery() on null
Here is my search code:
$c = new Customer();
return Customer::doesntHave('policy')->orWhere(function (Builder $query) use ($req) {
$query->orWhereHas('policy', function (Builder $query) use ($req) {
$p = new Policy();
$query->where($req->only($p->getFillable()))
->orWhereBetween("policy_period_from", [$req->policy_period_start_from, $req->policy_period_start_to])
->orWhereBetween("policy_period_to", [$req->policy_period_end_from, $req->policy_period_end_to])
->orWhereBetween("payment_date", [$req->payment_date_from, $req->payment_date_to]);
});
})->where($req->only($c->getFillable()))->get();
Am I missing something or are there any other ways to do this?
PS: While debugging the above search code is returning successfully, but the exception happening from somewhere inside Laravel after the prepareResponse call.
Thanks in advance.
return $this->hasOne('App\ModelName', 'foreign_key', 'local_key');
Change the order, put the foreign_key policy_id in front of id
In your Customer Model, you need to use belongsTo method:
public function policy() {
return $this->belongsTo('App\Models\Policy', "policy_id", "id");
}
And In your Policy Model, use hasOne:
public function customer() {
return $this->hasOne('App\Models\Customer', "policy_id", "id");
}
First of all, you placed the wrong params.
$this->belongsTo('App\Models\Policy', "FK", "PK");
public function policy() {
return $this->belongsTo('App\Models\Policy','policy_id', 'id');
}
And for null value of policy_id you can use withDefault();
public function policy() {
return $this->belongsTo('App\Models\Policy','policy_id', 'id')->withDefault([
'name' => 'test'
]);;
}
there's a number of problems there but can you perhaps specify the namespace and the class of both your models - Customer and Policy.
By default, the models you create with php artisan make:model will use the \App namespace e.g. \App\Customer and \App\Policy.
Just double check that.
Also, with regards to the relationship, if the Laravel conventions have been followed you could just:
In the Customer model
public function policy() {
return $this->belongsTo(Policy::class);
}
In the Policy model
public function customer() {
return $this->hasOne(Customer::class);
}
of if a multiple customers can be under one policy
public function customers() {
return $this->hasMany(Customer::class);
}
Good luck
I have some silly column names in my database, is there an easy way to alias a column name so it's always used for example:
public function columnAlias(){
return ['id'=>'ID', 'foo'=>'Bar'];
}
$model->id === $model->ID
$model->foo === $model->Bar
If it's only for accessing the attributes on the model you can write a get function.
So adding:
public function getId() {
return $this->ID;
}
public function getFoo() {
return $this->Bar;
}
will enable you to access ID and Bar like
$model->id;
$model->foo;
This works because of Yii2's use of the magic method __get: https://github.com/yiisoft/yii2/blob/master/framework/base/Component.php#L134
So i've got two models, Client and Project, and Client has a hasMany relationship with projects. I'm just trying to add the project count for the client into the JSON response but I can't get it to work.
My controller just returns all the projects;
public function index(Client $client)
{
return $client->all();
}
And my model contains the below;
protected $appends = ['client_projects_count'];
/**
* Create a relationship between this client and it's projects
*/
public function clientProjects() {
return $this->hasMany('App\Project');
}
public function getClientProjectsCountAttribute()
{
return $this->withCount('clientProjects');
}
This just adds client_projects_count to the response but it's an empty array. I'm close, if I dd($this->withCount('clientProjects')->get()) I can see the client_projects_count with the correct count, but if I remove the dd and keep the ->get() then I get an internal server error.
Also, it is possible to only load this for the index() method rather than every one?
From the Documentation
$clients = Client::withCount('projects')->get();
foreach ($clients as $client) {
echo $client->projects_count;
}
So I managed to resolve it myself, although I'm sure their must be a nicer way.
Client.php
protected $appends = ['client_projects_count'];
/**
* Create a relationship between this client and it's projects
*/
public function clientProjects() {
return $this->hasMany('App\Project');
}
public function clientProjectsCount()
{
return $this->clientProjects()->selectRaw('client_id, count(*) as aggregate')->groupBy('client_id')->get();
}
public function getClientProjectsCountAttribute()
{
return isset($this->clientProjectsCount()[0]) ? $this->clientProjectsCount()[0]->aggregate : 0;
}
i have created an auto complete search box in controller of 'booking' table successfully , but i want the auto complete search box to show data from another table 'patient' that have a one to many relationship with "booking" table according to a specific condition using 'where' condition ,
This is the Booking Controller that i add autocomplete in it:
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Booking;
use App\Patient;
use App\User;
use Session;
use DB;
use Auth;
use Input;
class BookingController extends Controller
{
public function __construct()
{
$this->middleware('auth');
}
/**
* Display a listing of the resource.
*
* #return \Illuminate\Http\Response
*/
public function index()
{
$search = \Request::get('search');
$bookings = Booking::whereHas('patient', function ($query) use ($search) {
$query->where('patient_name', 'like', '%' . $search . '%');
})->where('status','=', null)->whereHas('patient', function ($query){
$query->where('company_id','=' ,Auth::user()->company_id);
})->paginate(10);
return view('booking.index')->withBookings($bookings);
/**
* Show the form for creating a new resource.
*
* #return \Illuminate\Http\Response
*/
public function autoComplete(Request $request) {
$query = $request->get('term','');
$bookings=Booking::whereHas('patient', function ($query){
$query->where('company_id','=' ,Auth::user()->company_id);
})->$data=array();
foreach ($bookings as $booking) {
$data[]=array('value'=>$booking->patient->patient_name,'id'=>$booking->id);
}
if(count($data))
return $data;
else
return ['value'=>'No Result Found','id'=>''];
}
and this is the Booking Model :
class Booking extends Eloquent
{
public function patient()
{
return $this->belongsTo('App\Patient');
}
public function user()
{
return $this->belongsTo('App\User');
}
}
and this is the patient Model:
class Patient extends Eloquent
{
public function booking()
{
return $this->hasMany('App\Booking');
}
public function user()
{
return $this->belongsTo('App\User');
}
}
and i used this code in view :
{!! Form::text('search_text', null, array('placeholder' => 'Search Text','class' => 'form-control','id'=>'search_text')) !!}
i want to show data from "patient" table and there is a one to many relationship between "booking" and "patient" table and i have successfully made a search box to search in patient table as you can see in index function , but i dont know to show data from "patient" table using where condition to show patient_name that his company_id equal Authenticated user company_id
Sorry for my Bad Language .