241. Providing the Recipe Service Correctly
Jul 22, 2026 00:53
· 1:59
· English
· Whisper Turbo
· 2 ஒலிப்பேழைகள்
இந்த நகல் காலாவதியாகும் 8 நாட்கள்.
நிலையான சேமிப்புக்காக மேம்படுத்தல் →
காட்டு
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Speaker 1 (241. Providing the Recipe Service Correctly)
The bug we recognized in the last lecture is a pretty mean one.
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Speaker 1 (241. Providing the Recipe Service Correctly)
If we add a new recipe here,
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Speaker 1 (241. Providing the Recipe Service Correctly)
we hit save and
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Speaker 1 (241. Providing the Recipe Service Correctly)
we go to shopping list and go back,
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Speaker 1 (241. Providing the Recipe Service Correctly)
you see it's lost,
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Speaker 1 (241. Providing the Recipe Service Correctly)
it's gone.
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Speaker 1 (241. Providing the Recipe Service Correctly)
Again,
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Speaker 1 (241. Providing the Recipe Service Correctly)
test,
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Speaker 1 (241. Providing the Recipe Service Correctly)
test and gone.
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Speaker 1 (241. Providing the Recipe Service Correctly)
So what's happening here?
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Speaker 1 (241. Providing the Recipe Service Correctly)
The issue we encounter here
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Speaker 1 (241. Providing the Recipe Service Correctly)
is that we provide our recipes service in
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Speaker 1 (241. Providing the Recipe Service Correctly)
the recipes component.
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Speaker 1 (241. Providing the Recipe Service Correctly)
So all the components in this area share the
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Speaker 1 (241. Providing the Recipe Service Correctly)
same instance.
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Speaker 1 (241. Providing the Recipe Service Correctly)
But if we navigate away to the shopping list area,
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Speaker 1 (241. Providing the Recipe Service Correctly)
the recipes component is destroyed and so is
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Speaker 1 (241. Providing the Recipe Service Correctly)
the instance of this service.
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Speaker 1 (241. Providing the Recipe Service Correctly)
So what we need to do to ensure that our service survives
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Speaker 1 (241. Providing the Recipe Service Correctly)
is we need to add it to our app module here.
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Speaker 1 (241. Providing the Recipe Service Correctly)
By adding it here,
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Speaker 1 (241. Providing the Recipe Service Correctly)
recipes service,
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Speaker 1 (241. Providing the Recipe Service Correctly)
recipe service,
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Speaker 1 (241. Providing the Recipe Service Correctly)
and adding the import to,
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Speaker 1 (241. Providing the Recipe Service Correctly)
we make sure that now we have one instance
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Speaker 1 (241. Providing the Recipe Service Correctly)
of the service all the time available as long as our app is running.
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Speaker 1 (241. Providing the Recipe Service Correctly)
So now if we add the spaghetti one
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Speaker 1 (241. Providing the Recipe Service Correctly)
more time with our beautiful image,
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Speaker 1 (241. Providing the Recipe Service Correctly)
very tasty as mentioned before,
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Speaker 1 (241. Providing the Recipe Service Correctly)
and I hit save.
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Speaker 1 (241. Providing the Recipe Service Correctly)
Now, if I come back,
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Speaker 2 (241. Providing the Recipe Service Correctly)
it's still there.
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Speaker 1 (241. Providing the Recipe Service Correctly)
And as you can see,
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Speaker 1 (241. Providing the Recipe Service Correctly)
I can still edit it.
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Speaker 1 (241. Providing the Recipe Service Correctly)
So this is now working.
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Speaker 1 (241. Providing the Recipe Service Correctly)
Now we can try putting it to the shopping list,
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Speaker 1 (241. Providing the Recipe Service Correctly)
which of course doesn't add.
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Speaker 1 (241. Providing the Recipe Service Correctly)
We first of all have to add some ingredients like spaghetti.
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Speaker 1 (241. Providing the Recipe Service Correctly)
But now this is working as expected.
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Speaker 2 (241. Providing the Recipe Service Correctly)
Well,
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Speaker 2 (241. Providing the Recipe Service Correctly)
almost.
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Speaker 1 (241. Providing the Recipe Service Correctly)
With the remaining bug.
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Speaker 1 (241. Providing the Recipe Service Correctly)
that here,
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Speaker 1 (241. Providing the Recipe Service Correctly)
once we click this X button,
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Speaker 1 (241. Providing the Recipe Service Correctly)
we're not deleting the ingredient.
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Speaker 1 (241. Providing the Recipe Service Correctly)
So that is something we should also have a look at.
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