229. Allowing the Deletion of Shopping List Items

Jul 22, 2026 00:51 · 2:52 · English · Whisper Turbo · 3 Гучні

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Індекс лекції

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

So we added the resetting and the clear mechanism.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

Let's now make sure we can delete items.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

For this,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

of course, I need another click listener here and definitely try solving this on

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

your own if you want.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

So that is your chance to pause the video.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

If you don't want to

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

solve it on your own or if you are already finished with it now,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

well,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

we can definitely go ahead and do it together.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

So I'm calling on the lead here when I click the delete button.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

And I'll add this method to my shopping edit component.

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S… Speaker 2 (229. Allowing the Deletion of Shopping List Items)

Well,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

in onDelete,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

what do we need to do here?

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

We need to inform the service that it should remove

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

one of the items in the array.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

That is basically almost all.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

We also need to make sure that we call this onClear.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

Because we definitely also want to clear the form if we delete the item which

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S… Speaker 2 (229. Allowing the Deletion of Shopping List Items)

was loaded.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

Now in a shopping list service,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

I need to add a method,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

delete ingredient,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

and I expect to get the index where I should delete it.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

With that information,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

I can simply use my ingredients array and splice one of

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S… Speaker 2 (229. Allowing the Deletion of Shopping List Items)

the elements.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

Splice allows us to start at a specific point,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

for example at the index here,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

and then splice one element,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

thus removing it.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

And then of course,

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S… Speaker 2 (229. Allowing the Deletion of Shopping List Items)

as always,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

we should call ingredients changed.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

And of course, you could refactor this in its own method.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

But I think that's okay like this too.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

So here I will slice or simply pass

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

a copy of my ingredients.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

And with that,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

the final step is before we clear everything,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

I will reach out to my shopping list service,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

call delete ingredient and simply pass

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

the edited item index as a value.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

Now this will throw an error if we click delete without loading

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

an item So therefore I will simply add ngif

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

to the button and I'll just restructure to make it easier to read ngif

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

to only display the button if we are in edit mode So

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

now I do default we don't see delete

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

If I switch to an item,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

I can see and I click it,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

it resets the form and it deleted the item.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

Now no more items are left.

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S… Speaker 3 (229. Allowing the Deletion of Shopping List Items)

Of course,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

I can still add new ones and delete them again.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

So that is our shopping list form working with the template

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

-driven approach and a lot of other nice features like the service.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

really showing you how you could set up something like this,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

how you can use set value,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

how you can reset the form and therefore hopefully build the form you

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

need.

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

Now in the next lectures,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

I will move on to the recipe edit form,

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S… Speaker 1 (229. Allowing the Deletion of Shopping List Items)

which we will create using the reactive approach.

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