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Laravel Eloquent ORM Quiz

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Question 1/15

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

Select your answer

forceFill()

create()

fill()

update()

Question 2/15

What Eloquent method would you use to eager load relationships to avoid the N+1 query problem?

Select your answer

::load()

::with()

::find()

::join()

Question 3/15

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

Question 4/15

How would you invert the result set using an Eloquent query builder method?

Select your answer

Employing the

:toggle()

method

Applying

::invert()

Using the

::not()

method

Utilizing

::reverse()

Question 5/15

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

scope

Define it as a global method

Prefix the method name with

get

Question 6/15

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

belongsTo

relationship?

Select your answer

Use custom foreign key constraints in database migrations

Set a different foreign key constraint in the parent table

Override the localKey method

Specify a second parameter in the

belongsTo

definition

Question 7/15

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

model_id

{table}_id

id_{table}

Question 8/15

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

Select your answer

append()

add()

merge()

withHelpers()

Question 9/15

How would you define a custom timestamp name instead of using "created_at" or "updated_at"?

Select your answer

Use the

const CREATED_AT

and

UPDATED_AT

definitions in the model class

Set timestamps property

Override static methods

createTimestamps()

and

updateTimestamps()

Update default in config file

Question 10/15

How do you retrieve a paginated result set in Laravel Eloquent?

Select your answer

Executing the

::first()

tag

Applying the

::group()

method

Calling the

::paginate()

method

Using the

::chunks()

method

Question 11/15

When creating a many-to-many relationship in Eloquent, which of the following pivot table requirements is true?

Select your answer

The table must include a 'type' column to distinguish relationships.

The pivot table name must be alphabetical order of the related models' names separated by an underscore.

The table must contain both primary keys as columns, the first prefixed by its related model.

The table must have an 'id' column for foreign keys.

Question 12/15

What does the

Model::whereNull('column')

query return?

Select your answer

Records where the column is false

Records where the specified column has a null value

Records with errors in the specified column

Records where the specified column has a value

Question 13/15

What is the purpose of accessors in Laravel Eloquent Models?

Select your answer

To modify data before it is returned to the application

To automatically parse incoming requests

To modify data before it's saved to the database

To validate data before applying filters

Question 14/15

How do you define a relationship in a Laravel Eloquent model?

Select your answer

Utilizing the

belongsTo

hasOne

hasMany

, etc. methods

Using scopes

By setting a static property

Adding it to a controller

Question 15/15

What is the result of calling

Model::findOrFail($id)

if the model with the specified ID is not found?

Select your answer

Returns a boolean false

Throws a ModelNotFoundException

Logs an error message and returns

Returns a null value

Your Results

You did not answer any questions correctly.

Your Answers

Question 1/15

😊 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

forceFill()

create()

fill()

update()

The

forceFill()

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

Question 2/15

😊 Your answer was correct 🙁 Your answer was incorrect

What Eloquent method would you use to eager load relationships to avoid the N+1 query problem?

Available answers

::load()

::with()

::find()

::join()

The

::with()

method is used to eager load relationships in Eloquent, which helps in resolving the N+1 query problem.

Question 3/15

😊 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.

Question 4/15

😊 Your answer was correct 🙁 Your answer was incorrect

How would you invert the result set using an Eloquent query builder method?

Available answers

Employing the <pre><code>:toggle()</code></pre> method

Applying <pre><code>::invert()</code></pre>

Using the <pre><code>::not()</code></pre> method

Utilizing <pre><code>::reverse()</code></pre>

Inverting a collection or result set is not inherently supported with a single eloquent method, but can be realized through collection methods like

reverse()

for sorted entries.

Question 5/15

😊 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>scope</code></pre>

Define it as a global method

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

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 6/15

😊 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

Use custom foreign key constraints in database migrations

Set a different foreign key constraint in the parent table

Override the localKey method

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

To redefine the primary key in a

belongsTo

relation, you specify it as a second parameter in the

belongsTo

function.

Question 7/15

😊 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

model_id

{table}_id

id_{table}

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 8/15

😊 Your answer was correct 🙁 Your answer was incorrect

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

Available answers

append()

add()

merge()

withHelpers()

The

append()

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

Question 9/15

😊 Your answer was correct 🙁 Your answer was incorrect

How would you define a custom timestamp name instead of using "created_at" or "updated_at"?

Available answers

Use the <pre><code>const CREATED_AT</code></pre> and <pre><code>UPDATED_AT</code></pre> definitions in the model class

Set timestamps property

Override static methods <pre><code>createTimestamps()</code></pre> and <pre><code>updateTimestamps()</code></pre>

Update default in config file

To customize timestamps in Eloquent Models, you can define the

CREATED_AT

and

UPDATED_AT

constants within the model class.

Question 10/15

😊 Your answer was correct 🙁 Your answer was incorrect

How do you retrieve a paginated result set in Laravel Eloquent?

Available answers

Executing the <pre><code>::first()</code></pre> tag

Applying the <pre><code>::group()</code></pre> method

Calling the <pre><code>::paginate()</code></pre> method

Using the <pre><code>::chunks()</code></pre> method

The

::paginate()

method in Eloquent returns paginated results, providing parameters to define how many records per page you want.

Question 11/15

😊 Your answer was correct 🙁 Your answer was incorrect

When creating a many-to-many relationship in Eloquent, which of the following pivot table requirements is true?

Available answers

The table must include a 'type' column to distinguish relationships.

The pivot table name must be alphabetical order of the related models' names separated by an underscore.

The table must contain both primary keys as columns, the first prefixed by its related model.

The table must have an 'id' column for foreign keys.

The convention for pivot table names in Eloquent requires that the table name be the alphabetical order of the related model names separated by an underscore.

Question 12/15

😊 Your answer was correct 🙁 Your answer was incorrect

What does the <pre><code>Model::whereNull('column')</code></pre> query return?

Available answers

Records where the column is false

Records where the specified column has a null value

Records with errors in the specified column

Records where the specified column has a value

The

whereNull()

method in Eloquent filters the result set to include only those records where the specified column's value is null.

Question 13/15

😊 Your answer was correct 🙁 Your answer was incorrect

What is the purpose of accessors in Laravel Eloquent Models?

Available answers

To modify data before it is returned to the application

To automatically parse incoming requests

To modify data before it's saved to the database

To validate data before applying filters

Accessors are methods in Eloquent Models that modify the model's data when it is retrieved from the database, thereby providing controlled data manipulation.

Question 14/15

😊 Your answer was correct 🙁 Your answer was incorrect

How do you define a relationship in a Laravel Eloquent model?

Available answers

Utilizing the <pre><code>belongsTo</code></pre>, <pre><code>hasOne</code></pre>, <pre><code>hasMany</code></pre>, etc. methods

Using scopes

By setting a static property

Adding it to a controller

Relationships in Eloquent are defined using methods like

belongsTo

hasOne

hasMany

, etc., in the model class.

Question 15/15

😊 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 boolean false

Throws a ModelNotFoundException

Logs an error message and returns

Returns a null value

The

Model::findOrFail($id)

method throws a

ModelNotFoundException

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