One-to-many (hasMany) in Laravel - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a one-to-many relationship method in a Laravel model.

Laravel

public function posts() {
    return $this->[1](Post::class);
}

Drag options to blanks, or click blank then click option'

AhasOne

BbelongsTo

ChasMany

DbelongsToMany

Attempts:

3 left

💡 Hint

Common Mistakes

Using belongsTo instead of hasMany

Using hasOne which is for one-to-one relationships

The hasMany method defines a one-to-many relationship in Laravel models.

2fill in blank

medium

Complete the code to retrieve all posts for a user using the relationship.

Laravel

$user = User::find(1);
$posts = $user->[1];

Drag options to blanks, or click blank then click option'

Aposts

Bcomments

Cpost

Dprofile

Attempts:

3 left

💡 Hint

Common Mistakes

Using singular 'post' which does not exist

Using unrelated properties like 'comments' or 'profile'

The relationship method is named posts, so accessing it as a property returns all related posts.

3fill in blank

hard

Fix the error in the relationship method by completing the code correctly.

Laravel

public function comments() {
    return $this->[1](Comment::class);
}

Drag options to blanks, or click blank then click option'

AhasMany

BhasOne

CbelongsTo

DbelongsToMany

Attempts:

3 left

💡 Hint

Common Mistakes

Using belongsTo which is for inverse relationships

Using hasOne which is for one-to-one relationships

The hasMany method is used to define a one-to-many relationship from the current model to the Comment model.

4fill in blank

hard

Fill both blanks to define a one-to-many relationship with a custom foreign key.

Laravel

public function orders() {
    return $this->[1](Order::class, '[2]');
}

Drag options to blanks, or click blank then click option'

AhasMany

BbelongsTo

Cuser_id

Dorder_id

Attempts:

3 left

💡 Hint

Common Mistakes

Using belongsTo instead of hasMany

Using wrong foreign key like order_id

The hasMany method defines the relationship, and the foreign key is usually the current model's name with _id, here user_id.

5fill in blank

hard

Fill all three blanks to create a one-to-many relationship with a custom foreign key and local key.

Laravel

public function reviews() {
    return $this->[1](Review::class, '[2]', '[3]');
}

Drag options to blanks, or click blank then click option'

AhasMany

Buser_id

Cid

DbelongsTo

Attempts:

3 left

💡 Hint

Common Mistakes

Using belongsTo instead of hasMany

Mixing up foreign key and local key names

The hasMany method is used with the foreign key user_id and the local key id to define the relationship.