Default API endpoints in Wordpress - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ component_behavior

intermediate

What is the output of fetching the default posts endpoint?

You make a GET request to the WordPress REST API endpoint /wp-json/wp/v2/posts. What kind of data do you receive?

A An HTML page showing the latest posts in a blog format.

B A plain text list of post titles separated by commas.

C A JSON object with only the total number of posts and no post details.

D A JSON array of post objects, each containing details like title, content, author, and date.

💡 Hint

Think about what a REST API usually returns when you ask for posts.

The default posts endpoint returns a JSON array of post objects with detailed information like title, content, author, and date.

📝 Syntax

intermediate

Which URL correctly accesses the default categories endpoint?

You want to get the list of categories using the WordPress REST API. Which URL is correct?

A /wp-json/wp/v2/categories

B /wp-json/wp/v2/category-list

C /wp-json/wp/v2/taxonomies/categories

D /wp-json/wp/v2/posts/categories

💡 Hint

Categories are a taxonomy in WordPress and have their own endpoint under wp/v2.

The correct endpoint for categories is /wp-json/wp/v2/categories.

🔧 Debug

advanced

Why does this request to /wp-json/wp/v2/users return a 401 error?

You try to fetch users with a GET request to /wp-json/wp/v2/users but get a 401 Unauthorized error. What is the most likely reason?

A You must use POST method instead of GET to access users.

B The users endpoint does not exist in the default WordPress REST API.

C The users endpoint requires authentication and you did not provide valid credentials.

D The site has disabled the REST API completely.

💡 Hint

Think about what kind of data users endpoint returns and who can see it.

The users endpoint requires authentication because user data is sensitive. Without credentials, WordPress returns 401 Unauthorized.

❓ state_output

advanced

What is the value of the 'slug' field in the response from /wp-json/wp/v2/tags?

You fetch tags from the endpoint /wp-json/wp/v2/tags. What does the 'slug' field represent in each tag object?

A A URL-friendly version of the tag name, usually lowercase and with hyphens instead of spaces.

B The unique numeric ID of the tag in the database.

C The full description text of the tag.

D The date when the tag was created.

💡 Hint

Slugs are often used in URLs to identify items cleanly.

The slug is a URL-friendly string derived from the tag name, used in URLs and queries.

🧠 Conceptual

expert

Which default REST API endpoint would you use to update a post's content?

You want to update the content of a post using the WordPress REST API. Which endpoint and HTTP method combination is correct?

A Send a POST request to /wp-json/wp/v2/posts/{id}

B Send a PATCH request to /wp-json/wp/v2/posts/{id}

C Send a GET request to /wp-json/wp/v2/posts/{id} with updated content in the body

D Send a PUT request to /wp-json/wp/v2/posts/{id}

💡 Hint

Updating part of a resource usually uses PATCH method in REST APIs.

The WordPress REST API supports updating posts with PATCH requests to /wp-json/wp/v2/posts/{id}. POST is for creating, GET is for reading, PUT is less commonly used here.