Laravel 8 pivot working only in 1 direction - laravel

I got a problem I have done model and migration for 3 tables: movies, actors and actor_movie (pivot)
when Im using from model Actor method movie() it working but don't work from Movie using actor()
class Movie extends Model
{
use HasFactory;
public function actors()
{
return $this->belongsToMany(Actor::class, 'actor_movie');
}
}
class Actor extends Model
{
use HasFactory;
public function movies()
{
return $this->belongsToMany(Movie::class, 'actor_movie');
}
}
movies migration:
public function up()
{
Schema::create('movies', function (Blueprint $table) {
$table->id();
$table->timestamps();
});
}
actor migration:
public function up()
{
Schema::create('actors', function (Blueprint $table) {
$table->id();
$table->timestamps();
});
}
Pivot migration:
public function up()
{
Schema::create('actor_movie', function (Blueprint $table) {
$table->bigInteger('movie_id')->unsigned()->index();
$table->foreign('movie_id')->references('id')->on('movies')->onDelete('cascade');
$table->bigInteger('actor_id')->unsigned()->index();
$table->foreign('actor_id')->references('id')->on('actors')->onDelete('cascade');
$table->primary(['actor_id', 'movie_id']);
$table->timestamps();
});
}

As said in the comments, you are running your tests in a Tinker console.
Tinker console loads all your PHP files and dependencies on startup and keep them in memory.
For your code to be refreshed, you need to kill tinker and restart it

Related

Laravel creates a one-to-many relationship instead of one-to-one

When I create a one-to-one relationship migration, laravel creates a one-to-many relationship. I tried to solve this in different ways and nothing worked.
How can I solve this?
Company:
class Company extends Model
{
public function user()
{
return $this->hasOne(User::class);
}
...
}
User:
class User extends Authenticatable
{
public function company(){
return $this->belongsTo(Company::class);
}
...
}
Migrations:
Schema::create('Company', function (Blueprint $table) {
$table->mediumIncrements('idCompany');
...
});
Schema::create('User', function (Blueprint $table) {
$table->id();
$table->increments('idUser');
$table->unsignedMediumInteger('Company_idCompany')
->unique()
->nullable();
$table->foreign('Company_idCompany')
->references('idCompany')
->on('company')
->onDelete('set null');
...
});
Laravel is creating nothing (on the migration), you always have to manually create the Model relationship (you are using hasOne and belongsTo, so that is 1-to-1) and migrations (you are creating User and Company not following the standards).
So, update your migrations to:
Schema::create('company', function (Blueprint $table) {
$table->id();
...
});
Schema::create('user', function (Blueprint $table) {
$table->id();
$table->increments('user_id');
$table->foreignId('company_id')
->unique()
->nullable();
$table->foreign('company_id')
->references('id')
->on('company')
->onDelete('set null');
...
});
See that I have moved everything to lowercase and snake case, remember to follow Laravel conventions or you are going to have a harder time working with Models...
Then, your relationships are correct:
class Company extends Model
{
public function user()
{
return $this->hasOne(User::class);
}
...
}
class User extends Authenticatable
{
public function company(){
return $this->belongsTo(Company::class);
}
...
}
So, when you do access a relationship, it will work out of the box now.
If you do Company::first()->user, that will return User or null, and if you do User::first()->company, that will return Company or null, there is no 1-to-N.

BadMethodCallException: Trying to list all partners with the categories laravel

I'm experiencing the following:
Goal: I would like to list all partners and the categories they belong to. Basically, it's a many to many relationship.
Below is the code:
Partner Categories Table Migration
public function up()
{
Schema::create('partcats', function (Blueprint $table) {
$table->bigIncrements('id');
$table->string('partcatnameP')->unique();
$table->unsignedBigInteger('user_id')->unsigned();
$table->foreign('user_id')->references('id')->on('users');
$table->timestamps();
});
}
Partners Table Migration
public function up()
{
Schema::create('partners', function (Blueprint $table) {
$table->bigIncrements('id');
$table->string('partnername');
$table->string('regnumber')->unique();
$table->unsignedBigInteger('activestatus_id')->unsigned();
$table->foreign('activestatus_id')->references('id')->on('activestatuses');
$table->unsignedBigInteger('user_id')->unsigned();
$table->foreign('user_id')->references('id')->on('users');
$table->timestamps();
});
}
Partner_Category Migration
public function up()
{
Schema::create('partner_partcat', function (Blueprint $table) {
$table->bigIncrements('id');
$table->unsignedBigInteger('partner_id')->unsigned();
$table->foreign('partner_id')->references('id')->on('partners')->onDelete('cascade');
$table->unsignedBigInteger('partcat_id')->unsigned();
$table->foreign('partcat_id')->references('id')->on('partcats')->onDelete('cascade');
$table->timestamps();
});
}
Models are as shown below:
Partcat Model
public function partners()
{
return $this->belongsToMany('App\Partcat','partner_partcat');
}
Partner Model
public function partcats()
{
return $this->belongsToMany('App\Partcat','partner_partcat');
}
and the Partners Controller is as shown below:
public function index()
{
//
$partners = Partner::all()->partcats();
// dd(Partner::all()->partcats());
return view('partners.index',['partners'=>$partners]);
}
This is where I'm trying to retrieve the list of partners and its related categories. However, I get a BadMethod call error.
You can use the following method
$partners = Partner::with('partcats')->get();
https://laravel.com/docs/5.6/eloquent-relationships#eager-loading
A many to many pivot table typically has the id for both tables it is relating.
The Partner_Category migration you have posted only seems to contain a partner_id. You may need to add in the category_id.
public function up()
{
Schema::create('partner_partcat', function (Blueprint $table) {
$table->bigIncrements('id');
$table->unsignedBigInteger('partner_id')->unsigned();
$table->unsignedBigInteger('partcat_id')->unsigned();
$table->timestamps();
$table->foreign('partner_id')->references('id')->on('partners')->onDelete('cascade');
$table->foreign('partcat_id')->references('id')->on('partcats')->onDelete('cascade');
});
}

accessing nested relationship in laravel 5

i have 3 models like below :
Date
Property
PropertyDetail
and here is my migration for tables i write in order
Date :
public function up()
{
Schema::create('dates', function (Blueprint $table) {
$table->bigIncrements('id');
$table->dateTime('date');
$table->timestamps();
});
}
Property :
public function up()
{
Schema::create('properties', function (Blueprint $table) {
$table->bigIncrements('id');
$table->integer('type');
$table->text('title');
$table->integer('base_capacity');
$table->timestamps();
});
and PropertyDetail :
public function up()
{
Schema::create('property_details', function (Blueprint $table) {
$table->bigIncrements('id');
$table->integer('property_id');
$table->string('state');
$table->string('city');
$table->timestamps();
});
}
i tried to remove unnecessarily fields from migration so to keep it clean so here is my 2 relations bettwen date and proeprties
Datemodel :
public function properties() {
return $this->belongsToMany(Property::class);
}
and propery model :
public function dates(){
return $this->belongsToMany(Date::class);
}
public function features(){
return $this->hasMany(Feature::class);
}
ok now finally in my controller i want to do this :
$search = Date::with('properties')
->where('date',$someday)->get()
->and some how here i want to select the city from the property detail table
;
so here is my problem , now i can easily access properties and show thier name but from this relation how can i access features relation and select the city from there should i use joins or some thing there i hope i was clear enough that what i want to do
You can do this:
Property model:
public function details(){
return $this->belongsToMany(Details::class,'property_details','id','property_id');
}
and in Date model:
public function properties() {
return $this->belongsToMany(Property::class);
}
public function propertiesDetails() {
return $this->properties()->with('details');
}
and in your controller you can get detail of properties by use:
$search = Date::with('propertiesDetails')
->where('date',$someday)->get();
now you can access to details of properties.
Hope it helps.

One to many relationship Laravel migration

I currently have a 1:1 relationship and I need it to be a one to many.
Such that Job Details can have multiple results for 1 Job Search.
Job Searches
public function up()
{
Schema::create('job_searches', function (Blueprint $table) {
$table->increments('id');
});
}
Job Details
public function up()
{
Schema::create('job_details', function (Blueprint $table) {
$table->integer('job_details_id',11);
$table->foreign('job_details_id')->references('id')->on('job_searches');
});
}
The current output I am getting is:
Job_Search_Id
1
Job_Detail_Id
1
When adding another result to the job details I get:
Illuminate\Database\QueryException with message 'SQLSTATE[23503]:
Foreign key violation: 7 ERROR: insert or update on table
"job_details" violates foreign key constraint
"job_details_job_details_id_foreign"
I also have stated the relationships in my models
Job Search Model
class JobSearches extends Model
{
protected $primaryKey = 'id';
public function job_details(){
return $this->belongsToMany('App\job_details');
}
}
Job Details Model
class JobDetails extends Model
{
protected $primaryKey = 'job_details_id';
public function job_search(){
return $this->hasOne('App\job_search');
}
Change the migration to:
public function up()
{
Schema::create('job_details', function (Blueprint $table) {
$table->increments('id');
$table->unsignedInteger('job_search_id');
});
Schema::table('job_details', function (Blueprint $table) {
$table->foreign('job_search_id')->references('id')->on('job_searches');
});
}
And the JobSearch class:
class JobSearch extends Model
{
public function jobDetails(){
return $this->hasMany('App\JobDetail');
}
}
And the JobDetail class:
class JobDetails extends Model
{
public function jobSearch()
{
return $this->belongsTo('App\JobSearch');
}
}
If you'll use the code without modification, it will work for you.

Laravel 5.4 belongsToMany relationship returns empty

In Laravel 5.4 I'am trying to set up a Many To Many Relation. but the belongsToMany returns empty! Here's my migrations and models.
botusers Table:
public function up()
{
Schema::create('botusers', function (Blueprint $table) {
$table->increments('id');
$table->integer('t_id');
$table->string('first_name');
$table->string('last_name');
$table->string('username');
$table->string('mobile');
$table->timestamps();
});
}
candidates Table:
public function up()
{
Schema::create('candidates', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->string('token');
$table->string('degree');
$table->integer('age');
$table->text('desc');
$table->string('photo_url');
$table->string('cv_url');
$table->timestamps();
});
}
Third table, botuser_candidate Table:
public function up()
{
Schema::create('botuser_candidate', function (Blueprint $table) {
$table->integer('botuser_id');
$table->integer('candidate_id');
});
}
and the votes() method in Botuser Model:
public function votes()
{
return $this->belongsToMany(Candidate::class)->get();
}
When I fire the votes() method returns an empty array. and I also tested bellow method too,
public function votes()
{
return $this->belongsToMany(Candidate::class,'botuser_candidate','botuser_id','candidate_id')->get();
}
What I missed here? What should I do?
Edit:
I also added the foreign keys to the relation but the result is still same!
I would suggest you remove the get() method on the belongsToMany
Then query the database with
$c=new App\Candidate;
$c->with('votes')->get()
if you still want to use $c->votes() then you would have to do some changes to your functions. Lets use scope to achieve it.
public function candidates()
{
return $this->belongsToMany(Candidate::class,'botuser_candidate','botuser_id','candidate_id');
}
public function scopeVotes($query)
{
return $query->with("candidates")->get();
}
Then now we can call $v->votes() and it should return all your record.
Calling get() directly on belongsToMany method will return empty array.

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