193. TD Accessing the Form with @ViewChild

Jul 21, 2026 02:02 · 3:03 · English · Whisper Turbo · 2 Speaker

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

In the last lectures,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

we learned how we can register controls and how we can submit

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

the form and also which properties this form has.

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S… Speaker 2 (193. TD Accessing the Form with @ViewChild)

Now,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

right now,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

we submit the form by passing the form,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

which we get via ngForm here,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

to the onSubmit method.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

This is absolutely fine and probably the approach you will use in many

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

use cases.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

I just want to bring some other approach to your attention.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

You don't have to submit it here.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

Remember the component section where we learned about at

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

viewchild which allowed us to access a local

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

reference,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

an element controlled or which holds a local reference in

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

our TypeScript code?

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

Well in the end we do just have such a local reference here and

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

whilst it might not point to element ref but to the

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

ng form object It still is a local reference in our template

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

so we can also use at view child here So I will

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

simply comment out this on submit method here so

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

that we have it in the code you can find attached to this module and

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

Show you an alternative approach

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

In this alternative approach,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

I will use addViewChild,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

this decorator you learned about in the component section.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

So make sure to import it from addAngularCore.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

And I want to get access to the element which has

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

the local reference F on it.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

So I pass F as a string as an argument to ViewChild.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

And then I could simply store this in a variable named signup form,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

any name you like,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

which will be of type ng form,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

of course.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

Now in on submit,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

I could output this signup form like

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

this.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

And you should see that if I now submit this

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

again, we still have this form.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

And I can also enter something so that we can see that this works too if we have a look

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

at the value.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

So this gives us access to the very same forum without passing it

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

to onSubmit.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

This is especially useful if you need to access the forum not

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

just at the point of time when you submit it,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

but also earlier.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

And I will show you a use case for this in a later lecture.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

For now,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

let's keep in mind that this is another way of getting access to the forum in our TypeScript

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

code, a perfectly valid way of getting access.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

And before diving deeper into why this might be useful or when we could use that,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

let's actually understand how we can control the

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

validity of the form.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

So to determine whether the form is valid,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

if we entered a valid email address here or not,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

because right now I can submit anything,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

no matter if this is invalid,

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

if this is empty.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

It would be nice if you could add such validation and take advantage of

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

the tools Angular gives us there to possibly also enhance the user

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

experience by placing a red border around invalid elements or

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

something like this.

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S… Speaker 1 (193. TD Accessing the Form with @ViewChild)

We'll have a look at validation in the next lectures.

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