Nested resources in Rest API - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a nested route for comments under posts in a REST API.

Rest API

app.route('/posts/[1]/comments')

Drag options to blanks, or click blank then click option'

A<postId>

BpostId

C{postId}

D:postId

Attempts:

3 left

💡 Hint

Common Mistakes

Using curly braces or angle brackets instead of colon for URL parameters.

Omitting the colon before the parameter name.

In REST API routing, parameters in the URL path are defined with a colon prefix, like ':postId'.

2fill in blank

medium

Complete the code to extract the post ID from the request parameters in a nested route handler.

Rest API

const postId = req.params.[1];

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ApostID

BpostId

Cpost_id

Did

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different parameter name than defined in the route.

Using underscores or different casing.

The parameter name in the URL is 'postId', so we access it as req.params.postId.

3fill in blank

hard

Fix the error in the nested route path to correctly define a route for a specific comment under a post.

Rest API

app.get('/posts/:postId/comments/[1]', (req, res) => { /* handler */ });

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A:commentId

B{commentId}

CcommentId

D<commentId>

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting the colon before the parameter name.

Using curly braces or angle brackets instead of colon.

Route parameters must be prefixed with a colon ':' to be recognized as variables.

4fill in blank

hard

Fill both blanks to create a nested route that handles updating a comment for a specific post.

Rest API

app.[1]('/posts/:postId/comments/:commentId', (req, res) => {
  const postId = req.params.[2];
  // update logic
});

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Aput

BpostId

Cpatch

DcommentId

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'get' or 'post' instead of 'put' or 'patch' for updates.

Accessing the wrong parameter name.

Use HTTP PUT method for updating, and access the postId parameter from req.params.

5fill in blank

hard

Fill all three blanks to define a nested DELETE route for removing a comment from a post.

Rest API

app.[1]('/posts/:[2]/comments/:[3]', (req, res) => {
  const postId = req.params.[2];
  const commentId = req.params.[3];
  // delete logic
});

Drag options to blanks, or click blank then click option'

Adelete

BpostId

CcommentId

Dremove

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'remove' instead of 'delete' as HTTP method.

Mismatching parameter names between URL and req.params.

Use the DELETE method and access both postId and commentId parameters to identify the resource to delete.