Loading... Login Loading... Register

Laravel Eloquent ORM Quiz

Want to learn more than this quiz offers you? Have a look at my Frontend web development courses.

Create an account and save your quiz results

Login and save your results

First Name *

Last Name *

Email *

Password *

Confirm Password *

I agree to the Terms of Service & Privacy Policy.

Add me to your newsletter.

Question 1/15

What method would convert an Eloquent collection into a JSON representation?

Select your answer

serialize()

toJson()

toJSON()

toString()

Question 2/15

If you want to get the latest record from a table based on a timestamp, which Eloquent method should you use?

Select your answer

::where()

.oldest()

.orderByDesc()

.latest()

Question 3/15

When defining a morphTo relationship, what must you provide to allow for polymorphic relationships?

Select your answer

Two database columns:

{type}_id

and

{type}_type

are required

Define keys in database migrations explicitly

Specify

morphMap()

Include translated properties

Question 4/15

What function allows you to synchronize intermediate tables for a many-to-many relationship?

Select your answer

save()

link()

attach()

sync()

Question 5/15

Which Eloquent method would you use to retrieve all records from a model with a specific column value?

Select your answer

::all()

::find()

::where()

::get()

Question 6/15

You have a function in a model showcasing a hasOne relation. What should the corresponding foreign key look like by default?

Select your answer

model_id

id_{table}

{model}_id

{table}_id

Question 7/15

To mass assign attributes in Eloquent and bypass the mass assignment protection, which method should be used?

Select your answer

update()

fill()

forceFill()

create()

Question 8/15

In Eloquent relationships, how do you redefine the primary key that a parent table references in a

belongsTo

relationship?

Select your answer

Set a different foreign key constraint in the parent table

Use custom foreign key constraints in database migrations

Specify a second parameter in the

belongsTo

definition

Override the localKey method

Question 9/15

Which Eloquent feature allows tracking of changes in data for auditing purposes?

Select your answer

Model Observers

Timestamps

Soft deletes

Global Scopes

Question 10/15

What function in Eloquent is used to append computed values to serialized form queries?

Select your answer

withHelpers()

add()

merge()

append()

Question 11/15

What is the result of calling

Model::findOrFail($id)

if the model with the specified ID is not found?

Select your answer

Returns a null value

Returns a boolean false

Logs an error message and returns

Throws a ModelNotFoundException

Question 12/15

When creating a scoped query in an Eloquent model, what must you do?

Select your answer

Invoke it within factory serializers

Prefix the method name with

get

Prefix the method name with

scope

Define it as a global method

Question 13/15

In Laravel Eloquent, which method can be used to check if at least one record exists in a query result?

Select your answer

::has()

::first()

::exists()

::check()

Question 14/15

What method is used to update or create a record based on matching attributes?

Select your answer

::updateOrCreate()

::updateOrInsert()

::firstOrNew()

::saveOrFail()

Question 15/15

How do you prevent an attribute from being mass-assignable in Eloquent models?

Select your answer

Make it private

Include it in the

$guarded

array

Set

protected

variable

Add it to the

$hidden

array

Your Results

You did not answer any questions correctly.

Your Answers

Question 1/15

😊 Your answer was correct 🙁 Your answer was incorrect

What method would convert an Eloquent collection into a JSON representation?

Available answers

serialize()

toJson()

toJSON()

toString()

The

toJson()

method will transform an Eloquent collection into its JSON representation.

Question 2/15

😊 Your answer was correct 🙁 Your answer was incorrect

If you want to get the latest record from a table based on a timestamp, which Eloquent method should you use?

Available answers

::where()

.oldest()

.orderByDesc()

.latest()

The

.latest()

method orders results by the created_at timestamp in descending order, effectively getting the latest record.

Question 3/15

😊 Your answer was correct 🙁 Your answer was incorrect

When defining a morphTo relationship, what must you provide to allow for polymorphic relationships?

Available answers

Two database columns: <pre><code>{type}_id</code></pre> and <pre><code>{type}_type</code></pre> are required

Define keys in database migrations explicitly

Specify <pre><code>morphMap()</code></pre>

Include translated properties

Eloquent polymorphic relationships require columns named

{type}_id

and

{type}_type

to distinguish between multiple model types associated with the relationship.

Question 4/15

😊 Your answer was correct 🙁 Your answer was incorrect

What function allows you to synchronize intermediate tables for a many-to-many relationship?

Available answers

save()

link()

attach()

sync()

The

sync()

function allows updating the intermediate table for a many-to-many relationship by adding new records and removing any that are not present anymore.

Question 5/15

😊 Your answer was correct 🙁 Your answer was incorrect

Which Eloquent method would you use to retrieve all records from a model with a specific column value?

Available answers

::all()

::find()

::where()

::get()

The

::where()

method is used to filter query results based on column values.

Question 6/15

😊 Your answer was correct 🙁 Your answer was incorrect

You have a function in a model showcasing a hasOne relation. What should the corresponding foreign key look like by default?

Available answers

model_id

id_{table}

{model}_id

{table}_id

By default, the foreign key for a

hasOne

relation is the singular of the related model followed by _id, assuming the primary key is 'id'.

Question 7/15

😊 Your answer was correct 🙁 Your answer was incorrect

To mass assign attributes in Eloquent and bypass the mass assignment protection, which method should be used?

Available answers

update()

fill()

forceFill()

create()

The

forceFill()

method fills the model with an array of attributes, bypassing protection against mass assignment.

Question 8/15

😊 Your answer was correct 🙁 Your answer was incorrect

In Eloquent relationships, how do you redefine the primary key that a parent table references in a <pre><code>belongsTo</code></pre> relationship?

Available answers

Set a different foreign key constraint in the parent table

Use custom foreign key constraints in database migrations

Specify a second parameter in the <pre><code>belongsTo</code></pre> definition

Override the localKey method

To redefine the primary key in a

belongsTo

relation, you specify it as a second parameter in the

belongsTo

function.

Question 9/15

😊 Your answer was correct 🙁 Your answer was incorrect

Which Eloquent feature allows tracking of changes in data for auditing purposes?

Available answers

Model Observers

Timestamps

Soft deletes

Global Scopes

Model Observers in Laravel Eloquent can be used to observe changes on specific events like updating or deleting, making them useful for creating an audit trail.

Question 10/15

😊 Your answer was correct 🙁 Your answer was incorrect

What function in Eloquent is used to append computed values to serialized form queries?

Available answers

withHelpers()

add()

merge()

append()

The

append()

method allows you to append computed attributes to the model's array and JSON representations.

Question 11/15

😊 Your answer was correct 🙁 Your answer was incorrect

What is the result of calling <pre><code>Model::findOrFail($id)</code></pre> if the model with the specified ID is not found?

Available answers

Returns a null value

Returns a boolean false

Logs an error message and returns

Throws a ModelNotFoundException

The

Model::findOrFail($id)

method throws a

ModelNotFoundException

if the record is not found, making proper error handling necessary.

Question 12/15

😊 Your answer was correct 🙁 Your answer was incorrect

When creating a scoped query in an Eloquent model, what must you do?

Available answers

Invoke it within factory serializers

Prefix the method name with <pre><code>get</code></pre>

Prefix the method name with <pre><code>scope</code></pre>

Define it as a global method

To define a query scope in an Eloquent model, you must prefix the method name with

scope

. This allows it to be used as part of the query constraints.

Question 13/15

😊 Your answer was correct 🙁 Your answer was incorrect

In Laravel Eloquent, which method can be used to check if at least one record exists in a query result?

Available answers

::has()

::first()

::exists()

::check()

The

::exists()

method checks if a record or records matching the constraints exist, returning true or false.

Question 14/15

😊 Your answer was correct 🙁 Your answer was incorrect

What method is used to update or create a record based on matching attributes?

Available answers

::updateOrCreate()

::updateOrInsert()

::firstOrNew()

::saveOrFail()

The

::updateOrCreate()

method is used to update an existing record or create a new one if it doesn't exist based on the given attributes.

Question 15/15

😊 Your answer was correct 🙁 Your answer was incorrect

How do you prevent an attribute from being mass-assignable in Eloquent models?

Available answers

Make it private

Include it in the <pre><code>$guarded</code></pre> array

Set <pre><code>protected</code></pre> variable

Add it to the <pre><code>$hidden</code></pre> array

The

$guarded

array in an Eloquent model is used to specify which attributes should not be mass assignable, effectively protecting them from mass assignment vulnerabilities.