laravel one to many relationship example

1<?php
2
3namespace App\Models;
4
5use Illuminate\Database\Eloquent\Model;
6
7class User extends Model
8{
9    /**
10     * Get the phone associated with the user.
11     */
12    public function phone()
13    {
14        return $this->hasOne(Phone::class);
15    }
16}

1For example, a blog post may have an infinite number of comments. And a single
2comment belongs to only a single post  
3
4class Post extends Model
5{
6    public function comments()
7    {
8        return $this->hasMany('App\Models\Comment');
9    }
10}
11
12class Comment extends Model
13{
14    public function post()
15    {
16        return $this->belongsTo('App\Models\Post');
17    }
18}

1$user->roles()->attach($roleIds);
2$user->roles()->detach($roleIds);
3$user->roles()->sync($roleIds);
4$user->roles()->toggle($roleIds);

1class Post extends Model
2{
3   // 1 Post has many comments
4    public function comments()
5    {
6        return $this->hasMany(Comment::class);
7    }
8}

1<?php
2
3namespace App\Models;
4
5use Illuminate\Database\Eloquent\Model;
6
7class Post extends Model
8{
9    /**
10     * Get the comments for the blog post.
11     */
12    public function comments()
13    {
14        return $this->hasMany(Comment::class);
15    }
16}

1use App\Models\User;
2
3$user = User::find(1);
4
5$user->roles()->attach($roleId);