HasManyThrough Through Several Related Tables - laravel

I want to list a sum of related table with scenario like this:
Provinces --> Regencies --> Districts --> Villages --> Users.
I want to recap all regency, districts, villages and users on one time request through Province model.
I have created this relationship:
Province Model
public function regencies()
{
return $this->hasMany(Regency::class);
}
public function districts()
{
return $this->hasManyThrough(
District::class,
Regency::class,
'province_id',
'regency_id',
'id',
'id'
);
}
public function villages()
{
return $this->hasManyThrough(
Village::class,
District::class,
Regency::class,
'province_id',
'regency_id',
'district_id',
'id',
'id',
'id'
);
}
public function users()
{
return $this->hasManyThrough(
User::class,
Village::class,
District::class,
Regency::class,
'province_id',
'regency_id',
'district_id',
'village_id',
'id',
'id',
'id'
);
}
Regency Model
public function districts()
{
return $this->hasMany(District::class);
}
District Model
public function villages()
{
return $this->hasMany(Village::class);
}
Village Model
public function users()
{
return $this->hasMany(User::class);
}
User Model
public function village()
{
return $this->belongsTo(Village::class,'village_id');
}
This is my Controller:
public function province(){
$data = Province::whereHas('regencies',function($one){
$one->whereHas('districts',function($two){
$two->whereHas('villages', function($three){
$three->whereHas('users', function($four){
});
});
});
})->get();
return new GraphProvinceCollection(true, 'List of Data',$data);
}
This is my GraphProvinceCollection:
public $success, $message;
public function __construct($success, $message, $data)
{
parent::__construct($data);
$this->success = $success;
$this->message = $message;
}
public function toArray($request)
{
return [
'success' => $this->success,
'message' => $this->message,
'data' => $this->collection->transform(function($val){
return new GraphProvinceResource($val);
})
];
}
and This is my GraphProvinceResource:
public function toArray($request)
{
return [
'province' => $this->name,
'regencies' => $this->regencies->count(),
'districts' => $this->districts->count(),
'villages' => $this->villages->count(),
'users' => $this->users->count(),
];
}
This is my data:
I have execute the Eloquent, the province, regency, and district return right, but the village and user return false.
How to solve this on Eloquent?
Thank you.

Related

Laravel 8: Undefined index

I'm working on a questionnaire project and I ran into an error saying:
Undefined index: exams
This happened when I was trying to store responses to my database.
Here is my controller code:
public function store(Math $math)
{
$data = request()->validate([
'responses.*.answer_id' => 'required',
'responses.*.question_id' => 'required'
]);
$exam = $math->exams()->create($data['exams']);
$exam->examanswers()->createMany($data['examanswers']);
return 'Thank You';
}
Here is my exam model:
{
use HasFactory;
protected $fillable = ['exam'];
public function math()
{
return $this->belongsTo(Math::class);
}
public function examanswers()
{
return $this->hasMany(ExamAnswer::class);
}
}
question model:
{
use HasFactory;
protected $fillable = ['question'];
public function math()
{
return $this->belongsTo(Math::class);
}
public function answers()
{
return $this->hasMany(Answer::class);
}
}
Math model:
{
use HasFactory;
protected $fillable = [
'user_id', 'title', 'purpose', 'exam'
];
public function user()
{
return $this->belongsTo(User::class);
}
public function questions()
{
return $this->hasMany(Question::class);
}
public function exams()
{
return $this->hasMany(Exam::class);
}
}
Please help me look into it.
request()->validate(RULES) will return an array with all the existing rules' indexes. It will not return all data present, just what it is in the rules and present.
Read how $request->validate() works.
For example:
If you send home = 'Address', name = 'John' and email = 123, but your rules are:
$data = $request->validate([
'home' => 'required',
'name' => 'required',
]);
Then, if you want to use $data you would have (dd($data)):
$data['home']: Address
$data['name']: John
But email = 123 would not be present in $data.

Testing BelongsToMany relationship with pivot table

I'm trying to figure out how to create all the data based on this relationship testing in Laravel.
Company Model
class Company
{
public function stores()
{
return $this->hasMany(Store::class, 'company_id');
}
public function employers()
{
return $this->belongsToMany(User::class, 'employers',
'company_id', 'user_id');
}
}
Store Model
class Store
{
public function company()
{
return $this->belongsTo(Company::class, 'company_id');
}
public function employers()
{
return $this->belongsToMany(User::class, 'employers',
'store_id', 'user_id');
}
}
User Model
class User
{
public function company()
{
return $this->belongsToMany(Company::class, 'employers',
'user_id', 'company_id');
}
public function store()
{
return $this->belongsToMany(Store::class, 'employers',
'user_id', 'store_id');
}
}
$company = Company::factory()->hasStores(
Store::factory()->hasEmployers(User::factory())
)->create();
dd($company) // App\Models\Company {#2470... Ok!
$store = $company->store()->first();
dd($store) // App\Models\Store {#2479... Ok!
$user = $store->employers()->first();
dd($user) // null (T-T)
Background: this is an application that allows a proprietor to own several companies. For that reason, I got many relationships, and even so, employees sometimes can only belong to a single company or store.
Try:
$store = $company->store->first();
dump($store);
$user = $store->employers->first();
dump($user);
Try something like this with DB Facade
private $employ;
public function setUp(): void
{
$this->employ = Employ::factory()->create([
'id' => 14,
'name' => 'Name Employ'
]);
}
public function test_pivote_table()
{
$user = User::factory()->create([
'name' => 'User test'
);
//here :)
DB::table('name_pivote_table')->insert([
'user_id' => $user->id,
'employ_id' => $this->employ->id
]);
}
Credits to Fguzman :)

How to count and sum inner relational model in laravel

I am building a small application in Laravel where I got stuck with the sum of inner relational data,
I have a model Company which has Many relation associatedProjects and associatedProjects belongs to relation project and project hasOne technicalDescription.
Company Model:
class Company extends Model {
public function roles()
{
return $this->belongsToMany('Noetic\Plugins\Conxn\Models\Variables\Company\Role', 'company_role_relation', 'company_id', 'role_id')->withTimestamps();
}
public function specialisations()
{
return $this->belongsToMany('Noetic\Plugins\Conxn\Models\Variables\Company\Role', 'company_specialisation_relation', 'company_id', 'specialisation_id')->withTimestamps();
}
public function associatedProjects()
{
return $this->hasMany('Noetic\Plugins\Conxn\Models\Project\AssociateCompany','company_id','id');
}
}
AssociateCompany Model:
class AssociateCompany extends Model {
protected $table = 'project_associate_company';
protected $fillable = [
'project_id', 'company_role_id', 'company_specialisation_id', 'company_id', 'link', 'file_name'
];
public function project()
{
return $this->belongsTo('Noetic\Plugins\Conxn\Models\Project','project_id','id');
}
public function company()
{
return $this->belongsTo('Noetic\Plugins\Conxn\Models\Company','company_id','id');
}
public function companyRole()
{
return $this->belongsTo('Noetic\Plugins\Conxn\Models\Variables\Company\Role',
'company_role_id','id');
}
public function specialisation()
{
return $this->belongsTo('Noetic\Plugins\Conxn\Models\Variables\Company\Role',
'company_specialisation_id','id');
}
}
Project Model
class Project extends Model {
protected $fillable = [
'user_id','koshy_id', 'name', 'slug', 'owner_spv', 'spv_link', 'latitude', 'longitude',
'landmark', 'city', 'district', 'state', 'pin_code', 'region_id', 'country', 'building_use',
'sector', 'conxn_id', 'parent_project_id', 'website', 'project_logo', 'tracked', 'verified',
'code_link', 'status', 'active', 'premium','area'
];
public function technicalDescription()
{
return $this->hasOne('Noetic\Plugins\Conxn\Models\Project\TechnicalDescription','project_id','id');
}
public function associateCompany()
{
return $this->hasMany('Noetic\Plugins\Conxn\Models\Project\AssociateCompany','project_id','id');
}
}
Now this technicalDescription has fields construction_cost, now I want to first count total number of associatedProject and fetch sum of all the project's construction_cost which is in technicalDescription, some what I have done this code:
$company = Company:: where( 'status', 'saved')
->withCount( 'associatedProjects' )
->with('associatedProjects.project.technicalDescription')
->get()
->transform(function ($value) {
$value['project_value'] = $value['associatedProjects']->flatten(2)
->pluck('project.technicalDescription')->sum('construction_cost');
return $value;
})
->sortByDesc('project_value')
->forpage( $request->page , 10 );
$next = $request->page+1 ;
$previous =$request->page-1 ? abs($request->page-1):1 ;
I am unable to use paginate over here as laravel collection doesn't have such method, moreover the query logic also doesn't appear accurate.
Any suggestions are welcome. Thanks
You can use a BelongsToMany relationship to get the technicalDescriptions directly:
class Company extends Model {
public function technicalDescriptions() {
return $this->belongsToMany(
'Noetic\Plugins\Conxn\Models\Project\TechnicalDescription',
'project_associate_company',
'company_id',
'project_id',
null,
'project_id'
);
}
}
$company = Company::where('status', 'saved')
->withCount(['technicalDescriptions as project_value' => function($query) {
$query->select(DB::raw('sum(construction_cost)'));
}])
->orderByDesc('project_value')
->paginate();

Failed to insert multiple tags on Laravel

I want to insert a Post record with multiple tags so here's my code in Post#store:
$post = Post::create(array(
'title' => $request->title,
'body' => $request->body,
'user_id' => Auth::id(),
));
if($post && $request->tags)
{
$tagNames = explode(',', $request->tags);
$tagIds = [];
foreach($tagNames as $tagName)
{
$tag = Tag::firstOrCreate(['name'=>$tagName]);
if($tag)
{
$tagIds[] = $tag->id;
}
}
$post->tags()->attach($tagIds);
}
but it give me an errors "Call to a member function attach() on null". when i'm checked in mysql the tags is already in there but i can't find any entry on my post_tag tables. here's my post model:
class Post extends Model
{
protected $fillable = ['user_id','title','slug','body','tags','category_id','featured'];
public function category()
{
return $this->belongsTo('App\Category');
}
public function tags()
{
$this->hasMany('App\Tag');
}
}
You need to return the call the hasMany in your Post model.
public function tags()
{
return $this->hasMany('App\Tag');
}
Update
You should use belongsToMany not hasMany.

BelongsTo relationship returns null when using relation name "user"

When creating a simple one-to-one relationship in Laravel 5.5, $person->user is returning a null value whenever I use the method/relation name user. If I change the name to foo, User, or login the code seems to work fine. This is the second project I've had this same issue on. Can anyone see what I'm doing wrong?
In Person model:
public function user() {
return $this->belongsTo(User::class, 'user_id', 'id');
}
public function foo() {
return $this->belongsTo(User::class, 'user_id', 'id');
}
public function getUser() {
if ($this->user_id) {
return User::find($this->user_id);
} else {
return null;
}
}
In PersonTest:
$user = factory(User::class)->create();
$person = factory(Person::class)->create(['user_id' => $user->id]);
// This works
$this->assertTrue( $person->getUser()->is($user) );
// This works
$this->assertTrue( !is_null($person->foo) );
if ( $person->foo ) {
$this->assertTrue( $person->foo->is($user) );
}
// This fails
$this->assertTrue( !is_null($person->user) );
if ( $person->user ) {
$this->assertTrue( $person->user->is($user) );
}
By request, here is all of the code relating to Person,
Entire App\Models\Person.php:
use App\Models\User;
use App\Models\Asset;
use App\Traits\HasGuid;
use App\Traits\HasNotes;
use App\Traits\HasModifiedBy;
use App\Traits\HasAttachments;
use App\Traits\HasRelationships;
use App\Transformers\PersonTransformer;
use App\Models\Abstracts\HasTypeModelAbstract;
use App\Models\Interfaces\HasTypeModelInterface;
class Person extends HasTypeModelAbstract implements HasTypeModelInterface {
use HasModifiedBy,
HasNotes,
HasAttachments,
HasRelationships;
protected $fillable = [
'person_type_id',
'email',
'fname',
'lname',
'user_id',
'modified_by_user_id',
'audited_at',
'custom_attributes'
];
protected $casts = [
'custom_attributes' => 'json',
'user_id' => 'integer',
'modified_by_user_id' => 'integer',
'person_type_id' => 'integer'
];
protected $dates = [
'audited_at'
];
public static $transformer = PersonTransformer::class;
public function user() {
return $this->belongsTo(User::class, 'user_id', 'id');
}
public function type() {
return $this->belongsTo(PersonType::class, 'person_type_id');
}
public function assets() {
return $this->hasMany(Asset::class, 'person_id');
}
Traits:
trait HasNotes {
protected static function bootHasNotes() {
static::deleting(function ($instance) {
$instance->notes->each(function ($note) {
$note->delete();
});
});
}
public function notes() {
return $this->morphMany(Note::class, 'notable');
}
}
trait HasModifiedBy {
protected static function bootHasModifiedBy() {
static::saving(function ($instance) {
$instance->modified_by_user_id = Auth::id();
});
}
public function modifiedBy() {
return $this->belongsTo(User::class, 'modified_by_user_id');
}
}
trait HasAttachments {
protected static function bootHasAttachments() {
static::deleting(function ($instance) {
$instance->attachments->each(function ($attachment) {
$attachment->delete();
});
});
}
public function attachments() {
return $this->morphMany(Attachment::class, 'attachable');
}
}
trait HasRelationships {
protected static function bootHasRelationships()
{
static::deleting(function ($instance) {
Relation::forObject( $instance )->delete();
});
}
public function related() { ...[long polymorphic relationship here]... }
/App/Models/Abstracts/HasTypeModelAbstract
use Illuminate\Database\Eloquent\Model;
// This thing just appends some custom attributes dynamically in the JSON and array forms. And no, 'user' is not a custom attribute key.
abstract class HasTypeModelAbstract extends Model {
public function newFromBuilder($attributes = array(), $connection = NULL) {
$instance = parent::newFromBuilder($attributes);
$instance->appendCustomAttributes();
return $instance;
}
protected function appendCustomAttributes() {
$this->append( $this->getCustomAttributesFromType() );
}
public function getCustomAttributesFromType() {
if ($this->type) {
return $this->type->custom_attributes ?
array_keys((array) $this->type->custom_attributes) : [];
} else {
return [];
}
}
protected function setCustomAttributesFromType($attributes = array()) {
if ($this->type) {
$custom_attribute_keys = $this->getCustomAttributesFromType();
$custom_attributes = (array) $this->custom_attributes ?: [];
foreach ($custom_attribute_keys as $key) {
$attributes[$key] = array_get($custom_attributes, $key);
}
}
return $attributes;
}
protected function addMutatedAttributesToArray(array $attributes, array $mutatedAttributes) {
$this->appendCustomAttributes($this, $attributes);
$attributes = $this->setCustomAttributesFromType($attributes);
return parent::addMutatedAttributesToArray($attributes, $mutatedAttributes);
}
protected function mutateAttribute($key, $value)
{
$keys = $this->getCustomAttributesFromType();
if ( in_array($key, $keys) ) {
return $this->getCustomAttributeValue( $key, $value );
}
return parent::mutateAttribute($key, $value);
}
protected function getCustomAttributeValue($key, $value) {
$custom_attributes = (array) $this->custom_attributes ?: [];
return array_get($custom_attributes, $key, $value);
}
I have to be honest - quickly looking at the code I don't see anything wrong but it doesn't mean everything is for sure ok.
If I were you, I would try to limit Person model just to:
class Person extends \Illuminate\Database\Eloquent\Model {
protected $fillable = [
'person_type_id',
'email',
'fname',
'lname',
'user_id',
'modified_by_user_id',
'audited_at',
'custom_attributes'
];
protected $casts = [
'custom_attributes' => 'json',
'user_id' => 'integer',
'modified_by_user_id' => 'integer',
'person_type_id' => 'integer'
];
protected $dates = [
'audited_at'
];
public static $transformer = PersonTransformer::class;
public function user() {
return $this->belongsTo(User::class, 'user_id', 'id');
}
public function type() {
return $this->belongsTo(PersonType::class, 'person_type_id');
}
public function assets() {
return $this->hasMany(Asset::class, 'person_id');
}
}
and now I would verify if everything is fine. If it's fine, now you could investigate this further, add one trait and verify, add second trait and verify, finally extend from same class.
There must be bug somewhere but looking at this code it's hard do find anything
user is reserved name in eloquent.
try User instead of user
public function User() {
return $this->belongsTo(User::class, 'user_id', 'id');
}

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