Full Stack Web Development MASTERY Course - Novice to Expert - Creating Your Own Validator in Mongoose

The video tutorial covers creating custom validators in Mongoose, focusing on ensuring positive number validation for a schema field. It explains the use of built-in validators and demonstrates how to implement a custom validator to restrict negative values. The tutorial includes testing the validator and handling errors, concluding with a brief overview of upcoming topics like APIs and GitHub.

Which of the following is NOT a built-in validator in Mongoose?

• Lowercase

• Unique

• Trim

• Enum

What is the purpose of creating a custom validator in Mongoose?

• To automatically trim whitespace from strings

• To apply specific validation logic not covered by built-in validators

• To enforce unique values in a field

• To ensure data is stored in lowercase

In the custom validator example, what type of values are restricted for the 'lecture' field?

• Decimal numbers

• Negative numbers

• Positive numbers

• Zero

What keyword is used to start creating a custom validator in Mongoose?

• verify

• assert

• validate

• check

What happens if a negative value is entered for the 'lecture' field in the custom validator example?

• The value is accepted and stored

• An error is thrown

• The value is converted to positive

• The value is ignored

Which programming language is mentioned as being used for backend development in the tutorial?

• C++

• Ruby

• Java

• Swift

What future topics are mentioned as important for students and collaborative projects?

• Machine Learning

• Mobile App Development

• APIs and Git

• Data Science