Multiple filter parameters in Rest API - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does 'multiple filter parameters' mean in a REST API?

It means sending more than one condition in the API request to get specific data. For example, filtering users by age and city at the same time.

beginner

How are multiple filter parameters usually sent in a REST API request?

They are sent as query parameters in the URL, separated by '&'. For example: ?age=25&city=London.

beginner

Why use multiple filter parameters in an API?

To get more precise results by combining conditions, like finding products that are both in stock and under a certain price.

intermediate

What is a common challenge when handling multiple filter parameters?

Making sure the API correctly understands and applies all filters together, especially when some filters are optional or have different data types.

beginner

Give an example of a REST API URL with multiple filter parameters.

Example: https://api.example.com/products?category=books&price_lt=20&in_stock=true filters products that are books, cost less than 20, and are in stock.

How do you separate multiple filter parameters in a REST API URL?

A ?

B /

C #

D &

Multiple query parameters are separated by '&' in the URL.

What is the purpose of using multiple filter parameters in an API request?

A To get more specific results

B To get broader results

C To slow down the server

D To change the API version

Multiple filters narrow down the data to more specific results.

Which part of the URL contains filter parameters?

A Path

B Protocol

C Query string

D Fragment

Filter parameters are sent in the query string after the '?' symbol.

If you want to filter users by age and city, how would the URL look?

A /users?age=30&city=Paris

B /users/age=30/city=Paris

C /users#age=30&city=Paris

D /users?age=30#city=Paris

Query parameters are added after '?' and separated by '&'.

What should an API do if a filter parameter is missing?

A Return an error

B Ignore that filter and continue

C Stop processing

D Change the filter automatically

APIs usually ignore missing optional filters and return results accordingly.

Explain how multiple filter parameters work in a REST API and why they are useful.

Think about how you ask for specific data by adding conditions in the URL.

Describe a common way to handle multiple filter parameters on the server side.

Consider what the server does after receiving the URL with filters.