Resolving the Angular InMemory Web API 'not found' Error

Learn how to effectively troubleshoot and solve the "api/[something] not found" issue in your Angular application using the InMemoryWeb API.
---

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Angular with in memory data service: api/"something" not found

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Understanding the "api/[something] not found" Error in Angular

If you've been working with Angular and the angular-in-memory-web-api, you might have encountered the frustrating error: “api/[something] not found.” This error can impede your development process by preventing the successful retrieval of mock data during your API calls. In this guide, we'll explore the reasons behind this error and provide clear steps to resolve it.

The Problem at Hand

When trying to utilize the InMemory Web API in your Angular app, you may notice that your console logs the error “api/[something] not found.” This typically indicates a mismatch between the expected API endpoints and the actual data structure you've defined in your InMemoryDbService. In the example provided, the relevant code snippets reflect the setup of an Angular application using InMemory service, but the problem stems from incorrect casing in your data naming.

Diagnosing the Issue

Where the Error Lies

In the provided code, the data service setup is defined using:

[[See Video to Reveal this Text or Code Snippet]]

[[See Video to Reveal this Text or Code Snippet]]

Clearly, the uppercase 'T' is causing the mismatch, leading to your data not being found.

Solution: Standardize Your Casing

To resolve this, you need to ensure that the variable names used for your mock data match the expected API name in a case-sensitive manner:

Steps to Fix the Casing Issue

Modify your InMemoryDbService: Change the declaration of Things to lowercase things:

[[See Video to Reveal this Text or Code Snippet]]

Verify Service Calls: Check that wherever getThingsList is invoked, it refers to 'api/things' correctly.

Test Your Application: After making the changes, re-run your application and check whether the console still logs the “not found” error. It should now be resolved!

Conclusion

Debugging API call issues in an Angular application can often lead to frustration, especially when dealing with case-sensitivity issues. By ensuring your variable names align with the expected naming conventions in your HTTP requests, you can effectively eliminate the “api/[something] not found” error. Adhering to camelCase consistently across your application is a good practice that can save considerable time and effort.

Make sure to double-check follow-up code changes and enjoy a smoother development experience with Angular and the InMemory Web API!