267. Sending a DELETE Request

Jul 21, 2026 05:59 · 3:27 · English · Whisper Turbo · 2 Овозли эшиттиришлар

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Now that we had a look at how we can send requests,

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how we can post data,

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how we can get data,

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let's finish this basic request sending up by making

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sure that we can also clear our posts so that we can delete data.

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And for that,

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of course, definitely feel free to pause this video and try it on your own first.

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Try making sure that whenever this onClearPosts method runs,

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which will happen when we click that ClearPosts button up

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there,

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that whenever this method runs that you send a request that deletes

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all the posts on the backend.

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You learned everything you need for that,

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so here's your chance to pause the video and try it on your own.

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Were you successful?

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Well,

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it's not that hard.

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It's almost the same type of request we sent before.

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Now let's keep the structure of sending the requests in

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the posts service.

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So in there,

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I will add a new method,

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which I'll name delete posts.

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S… Speaker 1 (267. Sending a DELETE Request)

Of course,

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S… Speaker 1 (267. Sending a DELETE Request)

you can name it also clear posts or whatever you want.

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Now in there,

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I will use the HTTP client because that is

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our central client for all HTTP requests you wanna send from

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inside our Angular app.

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And there,

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we can now use the delete method,

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which will send a,

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well, delete request.

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Now this method requires a URL to which it should send the request

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and since I want to clear all posts,

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I will grab this URL which targets the overall posts

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node and send my request there so that all the posts

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there get deleted.

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Now, if I wanna be informed about that deletion process in the component,

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which in this case I want,

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but if you chose a different solution,

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that's fine too.

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But if I want to be informed in a component,

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I will return my observable here and I will not subscribe here

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in the service,

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but instead now in the app component in onClearPosts,

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I can reach out to the posts service and call DeletePosts.

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And since this returns an observable,

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we now have to subscribe here.

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Now, why do I want to subscribe here?

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Well,

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if I deleted all posts,

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I also want to clear my loaded posts array here in the component.

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So I will add a method here where I don't really care about the

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result of our request or of the response,

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but I know that this function here will only run if it succeeded.

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And therefore here,

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I will then simply just set this loaded posts

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equal to an empty array again to reset it.

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And with these changes to the service and to the component,

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if we go back to our application and we let this reload,

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if I click clear posts,

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you see eventually it gets rid of all the posts and on Firebase,

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we also see that this posts node does not exist anymore.

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And of course,

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we can still add new posts here.

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So all our old functionality still is there.

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The only thing we have,

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of course, is that currently we got no logic to automatically update our

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list down there once we added a new post.

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Now you can definitely score some bonus point if you implement this.

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I'll not do it here because it's not really related to the fetching of data,

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just to how you react to the sending of a post being done.

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So with that,

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we had a thorough look at different kinds of requests we can send.

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Now, what if something goes wrong?

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