Available validation rules in Laravel - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the required validation rule do in Laravel?

The required rule ensures that the field must be present in the input data and not empty. It is used to make a field mandatory.

beginner

Explain the email validation rule in Laravel.

The email rule checks if the input is a valid email address format. It helps ensure the user enters a proper email.

intermediate

What is the purpose of the unique validation rule?

The unique rule checks that the value does not already exist in a specified database table column. It prevents duplicate entries.

beginner

How does the confirmed validation rule work?

The confirmed rule requires that there is a matching field with the same name plus _confirmation. For example, password must match password_confirmation.

beginner

What does the max validation rule do?

The max rule limits the maximum size of the input. For strings, it limits the number of characters; for numbers, it limits the numeric value.

Which Laravel validation rule ensures a field is not empty?

A nullable

B sometimes

C required

D exists

The required rule makes sure the field is present and not empty.

What does the unique validation rule check?

A Field is confirmed

B Field is unique in a database table

C Field is numeric

D Field is a valid email

The unique rule checks that the value does not exist already in a database table column.

Which rule validates that two fields have matching values?

A confirmed

B same

C different

D required

The confirmed rule requires a matching _confirmation field with the same value.

What does the max:10 rule do for a string input?

A Makes field optional

B Requires at least 10 characters

C Limits numeric value to 10

D Limits string length to 10 characters

For strings, max:10 limits the input to 10 characters maximum.

Which rule allows a field to be empty but validates if present?

A nullable

B required

C unique

D confirmed

The nullable rule allows the field to be empty but validates it if it has a value.

List and explain five common Laravel validation rules and when to use them.

Think about rules that check presence, format, uniqueness, matching, and size.

How would you validate a password field that must be present, confirmed, and at least 8 characters long?

Combine multiple rules separated by | in Laravel.