I have 2 tables: USERS and SUBJECTS
The relationship between USER and SUBJECT is many to many.
In the User.php and Subject.php models, I defined:
User.php
function subjects() { return $this->belongsToMany('App\User'); }
Subject.php
function users() { return $this->belongsToMany('App\Subject'); }
The pivot table is subject_user and it has 3 columns:
subject_id, user_id, finished
The finished value can only be between 0 and 1.
Now I know that when I want to select all the subjects that an user studied, I have to write $user->subjects.
But what if I want to select all the subjects that an user studied and the finished value in the pivot table is equal to 1?
You need to add "withPivot()" to your relationship definitions, like this:
function subjects() { return $this->belongsToMany('App\User')->withPivot('finished'); }
function users() { return $this->belongsToMany('App\Subject')->withPivot('finished'); }
Then you can do:
$user->subjects()->where('finished', 1)->get();
You will need to eager load that relationship and use the wherePivot method.
$user = User::with(['subjects' => function($q) {
$q->wherePivot('finished', 1);
}])->fine($user_id);
Related
I have a problem showing data from 2 tables with an id, in laravel 6. My tables are "users" and "companies".
users
id
name
last name
companies
id
company
address
id_user
Model user
public function company()
{
return $this->hasOne('App\Company','id_user','id');
}
Model company
public function user()
{
return $this->belongsTo('App\User');
}
Controller
public function show($id)
{
$companies = Company::with('user')->find($id);
return view('clients.show', compact('companies'));
}
view
$companies->company
but the problem is that is not showing data from users table, can someone help me?
The foreign key name for user in companies table should be 'user_id' not 'id_user'
If you want to use custom column name make sure you pass it to the second argument of the relationship.
Model company:
public function user()
{
return $this->belongsTo('App\User', 'id_user');
}
I have 4 tables in project's database:
users (id, name)
teams (id, name)
team_members (id, user_id, team_id)
team_member_permissions (team_member_id, team_id)
I need to get user's teams. My current solution is to create teamMembers relationship in User model:
public function teamMembers()
{
return $this->hasMany(TeamMember::class);
}
members relationship in Team model:
public function members()
{
return $this->hasMany(TeamMember::class);
}
permissions relationship in TeamMember model:
public function permissions()
{
return $this->belongsToMany(Permission::class);
}
But how can I optimise it? For example, to get all teams for users I need to use
Team::whereHas('teamMember', function($query) use ($user){
$query->where('user_id', $user->id);
})->paginate();
But how can I implement a relationship that will contains all user's teams to get user's teams in one string of code, like $user->teams?
I suggest you use many to many relation in regards to your team_members tables to explicitly mention as pivot.
User model:
public function teams()
{
return $this->belongsToMany(Team::class, 'team_members');
}
Team model:
public function users()
{
return $this->belongsToMany(User::class, 'team_members');
}
Since you want to use whereHas clause on teamMember table, I believe that you want to extract teams based on the fact that all teams belonging to that user based on team_members table.
So, You can specify the table name on many to many relation as above.
Now you can use
$user->teams
I have many-to-many relationship users|pivot|task
I need to order records by pivot table column(role) and by user table column(name). Ordering by pivot works, but order by users doesnt. Please give any advice how to fix this
Job model
public function users(): BelongsToMany
{
return $this->belongsToMany(User::class,'user_job')
->using(UserJob::class)
->withPivot('role')
->withTimestamps();
}
User Model
public function jobs(): BelongsToMany
{
return $this->belongsToMany(Job::class,'user_job')
->using(UserJob::class)
->withPivot('role')
->withTimestamps();
}
Repository
return User::find($dto->getUserId())
->jobs()
->where($dto->getFilters())
->with('users')
->orderBy($dto->getSortBy(),$dto->getSortType()) // need to order by users.name
->paginate($dto->getPerPage());
I have three tables: Tournaments, Participants, Users. The structure is:
Tournaments:
-Id
-Description
-Date
Participants
-Id
-Id_tourn
-Id_user
Users
-Id
-Name
On my blade template I need all the info from Tournaments table and info of the User which is the participant of that tournament.
I've created the relation between Tournaments and User Models.
UPDATE:
Tournaments Model:
public function users() {
return $this->belongsToMany('App\User', 'Participants', 'Id_tourn', 'Id_user');
}
public function getTournaments()
{
return $this->with('users')->get();
}
Tournament Controller:
public function show()
{
$tourns = new Tournaments();
$tournaments = $tourns->getTournaments();
return $tournaments;
}
but when I try $tournament->users in foreach loop it returns 0 results
Thanks a lot!
It seems you are using a One to Many relationship on a Many to Many case, here are the documentation of the Many to Many relationship. You need to make a relationship like this:
public function users() {
return $this->belongsToMany('App\User', 'Participants', 'Id_tourn', 'Id_user');
}
So you will can access users like this:
$tournament->users
i have a hasManyTrough() relation in my database but could not get it to work with eloquent.
the relation in my database
category(id)
entry(id)
category_entries(category_id, entry_id)
i have 3 models
Category
has_many CategoryEntries
Entry
has_many CategoryEntries
CategoryEntry
belongs_to Category
belongs_to Entry
so every category has many entries and every entry has many categories.
in rails i would do the following
Entry
has_many CategoryEntries
has_many Categories, through: :category_entries
i have created the following in eloquent
CategoryEntry
public function category(){
return $this->belongsTo('App\Category');
}
public function entry(){
return $this->belongsTo('App\Entry');
}
Category
public function categoryEntries(){
return $this->hasMany('App\CategoryEntry');
}
Entry
public function categoryEntries(){
return $this->hasMany('App\CategoryEntry');
}
public function categories()
{
return $this->hasManyThrough('App\Category', 'App\CategoryEntry', 'category_id', 'id');
}
but this will create the following sql command:
select `entries`.*, `category_entries`.`category_id` from `entries`
inner join `category_entries` on `category_entries`.`id` = `entries`.`entry_id`
this makes no sence. where is my mistake?
As described in your question, relation is
Category (hasMany) Entry (hasMany) CategoryEntries
So we can add hasManyThrough relation in Category Model not in Entry model
class Category
.......
public function categoryEntries()
{
$this->hasManyThrough(App\CategoryEntry::class, App\Entry::class);
}
UPDATE
if the relation is based on db you have given, then you have Many-Many relation between Category and Entry. then you can have,
class Entry
....
public function categories()
{
return $this->belongsToMany(App\Category::class, 'category_entries');
}