Many to Many with additional table in L4 - laravel

I have a schema like that:
And now I want to use it in Laravel 4. So far, I could only achieve getting games for certain user, without touching owntype. Code:
public function games() {
return $this->belongsToMany('Game','games_users','owntype_id','games_id')->where('user_id','1');
}
The only thing I'm getting is onwtype_id. How can I add owntype table to the "equasion"?

You can access extra pivot table columns by specifying them through the withPivot function on the relationship function.
Basically I think you want to do this:
class User extends Eloquent {
public function games()
{
return $this->belongsToMany('Game', 'games_users')->withPivot('owntype_id');
}
}
class Game extends Eloquent {
public function users()
{
return $this->belongsToMany('User', 'games_users')->withPivot('owntype_id');
}
}
class Owntype extends Eloquent {
protected $table = 'owntype';
}
// Now you can do:
foreach ($user->games as $game)
{
// Echo each Owntype description.
echo Owntype::find($game->pivot->owntype_id)->description;
}
For the record... I think you might be taking it too far by creating a new table for owntype. Just set the description as a type column on the pivot table. Also make sure that your pivot table is named game_user (singular, alphabetically) and Laravel will know which pivot table to use automatically.
class User extends Eloquent {
public function games()
{
return $this->belongsToMany('Game')->withPivot('type');
}
}
class Game extends Eloquent {
public function users()
{
return $this->belongsToMany('User')->withPivot('type');
}
}
// Now you can do:
foreach ($user->games as $game)
{
// Echo each ownership type.
echo $game->pivot->type;
}
Some more info about working with pivot tables can be founded in the Laravel 4 docs.

Related

Laravel many to many relationship with pivot

I'm using Laravel Filament.
I got a projects and responsibles tables in a many-to-many relationship. But also another table of responsabilityTypes
projects
id
title
responsibles
id
name
responsabilityTypes
id
name
project_responsible
project_id
responsible_id
responsibilityType_id
And here are my relationships setup:
Responsible.php
public function projects() {
return $this->belongsToMany(Project::class,'rel_project_responsible','responsible_id','project_id')
->withPivot('responsibilityType_id')
->withTimestamps()
->using(AcademicoProyecto::class);
}
Project.php
public function responsibles() {
return $this->belongsToMany(Responsible::class,'rel_project_responsible','project_id','responsible_id')
->withPivot('responsibilityType_id','sort')
->withTimestamps()
->using(AcademicoProyecto::class);
}
I have set up a class for the pivot table like so:
ProjectResponsible.php
use Illuminate\Database\Eloquent\Relations\Pivot;
class AcademicoProyecto extends Pivot
{
}
ResponsibilityType.php
//Don't know how to set up
My question is, when the user is in a Project Edit page and clicks on the "attach" button, in order to add a Responsible record, a Modal pops up to select a Responsible, but I also implemented a Select list to display the different types of responsibilities.
What am I missing to set up in order to access and display the types of responsibilities in the select list and attach it to the pivot table?
Your question asks about "access and display" but you have no controller or view code. But for the model, it's just a simple relationship between two tables, so define it as such:
class AcademicoProyecto extends Pivot
{
use SoftDeletes;
public function responsibilityType() {
return $this->belongsTo(ResponsibilityType::class);
}
}
class ResponsibilityType extends Model
{
protected $fillable = ["name"];
}
Now you simply update the other models to access the relationship in the withPivot() call.
class Responsible extends Model {
public function projects() {
return $this->belongsToMany(Project::class,'rel_project_responsible','responsible_id','project_id')
->withPivot('responsibilityType')
->withTimestamps()
->using(AcademicoProyecto::class);
}
}
class Project extends Model {
public function responsibles() {
return $this->belongsToMany(Responsible::class,'rel_project_responsible','project_id','responsible_id')
->withPivot('responsibilityType', 'sort')
->withTimestamps()
->using(AcademicoProyecto::class);
}
}
Now you should be able to do, for example:
$foo = Responsible::with("projects")->first();
foreach ($foo->projects as $project) {
echo $project->pivot->responsibilityType?->name;
}

Laravel how to define 3 relationships with one model?

I have a Model which is called Championship. Championship may have 3 judges which are called Main Judge, Main Secretary and Judge Operator.
All of them linked to User Model and stored in the database as user ID.
My relationships looks like this
class Championship extends Model
{
protected $table = 'championships';
public function mainJudge()
{
return $this->hasOne('App\User', 'id', 'main_judge');
}
public function mainSecretary()
{
return $this->hasOne('App\User', 'id', 'main_secretary');
}
public function judgeOperator()
{
return $this->hasOne('App\User', 'id','judge_operator');
}
}
But I can't undertand how to define inverse relationship in User model
class User extends Authenticatable
{
public function sex()
{
return $this->belongsTo('App\Models\Sex');
}
public function player()
{
return $this->hasOne('App\Models\Player', 'user_id');
}
public function championship()
{
????
}
You just have to add it like you are adding other relations :
public function championship()
{
return $this->belongsTo('App\Championship');
}
When you do :
$championship = Championship::find($id);
$mainJudge = $championship->mainJudge;
$mainSecretary = $championship->mainSecretary;
// All objects will be exactly same
dd($mainJudge->championship,$mainSecretary->championship,$championship);
I assume all the user records have a foreign key to championships table championship_id
When you call the $user->championship relation it will return you the championship wrt to its foreign key championship_id
No need to worry you are just confusing the inverse relations:
See it this way:
Your mainJudge, mainSecretary, judgeOperators are of type App\User and every user have a championship_id when you will call the (App\User)->championship it will always return you its respective championship or null if the championship_id is empty.
Its just matter of perspective.
Just try the above code it will clear out your confusion.

BelongsToMany with one or vice versa relationship

I'm using Laravel and Eloquent.
I have a courses table and a Pivot table that holds the related courses.
My pivot table named relatedCourses has 2 columns, course1 & course2.
In the above example, Course ID 5 is related with Course ID 7.
$data["course"] = course::where("isActive",1)->with('related')->find(5);
This works and brings ID 7 as related.
If i try
$data["course"] = course::where("isActive",1)->with('related')->find(7) it should bring ID 5 as related, this is what i'm trying to achieve.
My code is like this in the model :
class course extends Model
{
public function category()
{
return $this->hasOne('App\courseCategory',"categoryId");
}
public function related()
{
return $this->belongsToMany('App\Models\course', 'relatedCourses', 'course1', 'course2');
}
}
You can define two relationships for this query.
class course extends Model
{
public function category()
{
return $this->hasOne('App\courseCategory',"categoryId");
}
public function relatedCourses()
{
return $this->belongsToMany('App\Models\Course', 'relatedCourses', 'course1', 'course2');
}
public function originalCourses()
{
return $this->belongsToMany('App\Models\Course', 'relatedCourses', 'course2', 'course1');
}
}
Then you can query your relations,
$data["course"] = course::where("isActive",1)->with('relatedCourses')->find(5);
and
$data["course"] = course::where("isActive",1)->with('originalCourses')->find(7);
To merge both relations you can do like this
$course = course::where("isActive",1)->with('originalCourses', 'relatedCourses')->get();
Hope this will help you.

Eloquent/Laravel5 linking distant relations ("hasOneThrough")

The question in short:
"pages" and "tasks" have a many-to-many relationship linked by the pivot table "page_tasks". The table "responses" is linked to that pivot table by the foreign key "page_task_id".
Now I want to be able to access the page and the task a response belongs to directly with Eloquent. However the hasManyThrough function does not work, as it exspects the foreign_keys at different places:
public function task(){
return $this->hasManyThrough('PageTask', 'Task', 'page_task_id', 'task_id');
}
Unknown column 'tasks.page_task_id' in 'field list'
This means that eloquent exspects the task table having a foreign key page_task_id pointing to page_tasks. But in my model the page_tasks table has a foreign key task_id pointing to tasks. How do I tell eloquent that fact?
An other approach I tried was to use existing relations that were previously defined:
public function task(){
return $this->page_task->task();
}
This however tells me that there is no methoid called "task".
What would the recommended way be to achieve this? What am I doing wrong?
Here are some more details if needed:
"pages" and "tasks" have a many-to-many relationship with pivot table page_tasks linking it.
Page-Model:
class Page extends Model {
public function tasks(){
return $this->belongsToMany('Task', 'page_tasks');
}
}
Task-Model:
class Task extends Model {
public function pages()
{
return $this->belongsToMany('Page', 'page_tasks');
}
}
This works fine.
Response-Model looks like this
class Response extends Model {
protected $fillable = [
'page_task_id',
];
public function page_task(){
return $this->belongsTo('App\PageTask', 'page_tasks');
}
public function task(){
??????
}
}
PageTask-Model looks like this:
class PageTask extends Model {
protected $fillable = [
'page_id',
'task_id',
];
public function page(){
return $this->belongsTo('Page');
}
public function task(){
return $this->belongsTo('Task');
}
public function responses(){
return $this->hasMany('Response');
}
}

Laravel query multiple tables using eloquent

hi sorry bit of a newbie here but I am have three tables users, profiles, friends. they all have the user_id fields within them and I want fetch all of the fields in one statement using Eloquent and not DB::statement and doing the table joins.
How can I achieve this?
Try this
use the User class and the with method that laravel has to query model relationships
$user = User::with(['profile', 'friend'])->get();
Ensure your models has the correct relationships as follows:
app/models/User.php
public function friend () {
return $this->hasMany('Friend');
}
public function profile () {
return $this->hasOne('Profile');
}
app/models/Profile.php
public function user() {
return $this->belongsTo('User');
}
app/models/Friend.php
public function user() {
return $this->belongsTo('User');
}
use some thing like this:
You should define relations in your models with hasOne, hasMany.
class Review extends Eloquent {
public function relatedGallery()
{
$this->hasOne('Gallery', 'foreign_id', 'local_id');
}
}
class Gallery extends Eloquent {
public function relatedReviews()
{
$this->hasMany('Review', 'foreign_id', 'local_id');
}
}
$gallery = Gallery::with('relatedReviews')->find($id);
Will bring the object Gallery with
$gallery->id
gallery->name
...
$gallery->relatedReviews // array containing the related Review Objects

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