获取有关枢轴列[Laravel 5]的详细信息

Question

I have 3 tables: Project , Group , User

and one relation pivot table: project_group with colmuns: id project_id group_id and pivot field user_id

I know how to take all Groups and Projects:

Project::find(1)->groups()->get();

groups() is belongToMany function inside Project Model.

Problem is I don't know how to get all users for particular project. I need to get project and all users names and ids for that project, any solution for this?

Thanks in advance

Answer 1

You can try on your Project.php model adding a pivot relationship

public function users() {
    return $this->hasMany(App\User::class, 'project_group');
}

---

However this may be misleading as project_group should be a pivot table between the project table and the group table. user_id doesn't belong in there.

Create a second pivot table called group_user with group_id , user_id . Then you can use this on your Group.php model:

public function users() {
    return $this->hasMany(App\User::class, 'group_user');
}

An example would then be:

$project = Project::find(1);
foreach($project->groups as $group) {
    $users = $group->users; // Now you should have access to all the users for each group
}