235. Adding new Ingredient Controls

Jul 22, 2026 00:51 · 3:39 · English · Whisper Turbo · 2 发言者

本记录誊本于2008年 8 天数。永久储存的升级 →

讲座索引

0:02

S… Speaker 1 (235. Adding new Ingredient Controls)

In the last lecture we added our array.

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S… Speaker 1 (235. Adding new Ingredient Controls)

Now I want to clean up how it looks,

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S… Speaker 1 (235. Adding new Ingredient Controls)

some styling,

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S… Speaker 1 (235. Adding new Ingredient Controls)

but mainly I want to add a button which allows us to

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S… Speaker 1 (235. Adding new Ingredient Controls)

add a new ingredient to that array.

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S… Speaker 2 (235. Adding new Ingredient Controls)

Well,

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S… Speaker 1 (235. Adding new Ingredient Controls)

to work on the styling,

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S… Speaker 1 (235. Adding new Ingredient Controls)

all I really want to do is I want to have some spacing between the rows.

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S… Speaker 1 (235. Adding new Ingredient Controls)

Well, there are a couple of ways of getting this style.

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S… Speaker 1 (235. Adding new Ingredient Controls)

What I will simply do is I will add an inline style,

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S… Speaker 1 (235. Adding new Ingredient Controls)

a normal style,

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S… Speaker 1 (235. Adding new Ingredient Controls)

no angular style,

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S… Speaker 1 (235. Adding new Ingredient Controls)

no ng -style directive.

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S… Speaker 1 (235. Adding new Ingredient Controls)

A normal style where I say margin,

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S… Speaker 1 (235. Adding new Ingredient Controls)

top,

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S… Speaker 1 (235. Adding new Ingredient Controls)

and set this to 10 pixels maybe.

0:42

S… Speaker 1 (235. Adding new Ingredient Controls)

And with that,

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S… Speaker 1 (235. Adding new Ingredient Controls)

it looks much better.

0:45

S… Speaker 1 (235. Adding new Ingredient Controls)

So that's all I wanted to do for now.

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S… Speaker 1 (235. Adding new Ingredient Controls)

The more important part is that we're able to add new ingredients.

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S… Speaker 1 (235. Adding new Ingredient Controls)

And for this,

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S… Speaker 1 (235. Adding new Ingredient Controls)

I'll simply add a new button at the end of this

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S… Speaker 1 (235. Adding new Ingredient Controls)

array area.

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S… Speaker 1 (235. Adding new Ingredient Controls)

So outside of the div,

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S… Speaker 1 (235. Adding new Ingredient Controls)

which is responsible for my individual form groups,

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S… Speaker 1 (235. Adding new Ingredient Controls)

I'll add a new row with a new column inside of it.

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S… Speaker 1 (235. Adding new Ingredient Controls)

And here I will

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S… Speaker 1 (235. Adding new Ingredient Controls)

simply add a button which says add ingredient,

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S… Speaker 1 (235. Adding new Ingredient Controls)

which will be

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S… Speaker 1 (235. Adding new Ingredient Controls)

of type or which will get a class of button,

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S… Speaker 1 (235. Adding new Ingredient Controls)

button success maybe.

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S… Speaker 1 (235. Adding new Ingredient Controls)

So now it sits directly at the bottom.

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S… Speaker 1 (235. Adding new Ingredient Controls)

Maybe let's simply add a horizontal line between rows.

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S… Speaker 1 (235. Adding new Ingredient Controls)

And that looks pretty good.

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S… Speaker 1 (235. Adding new Ingredient Controls)

So now we get this button.

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S… Speaker 1 (235. Adding new Ingredient Controls)

Let's now also hook it up.

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S… Speaker 1 (235. Adding new Ingredient Controls)

I will add a click listener on add ingredient.

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S… Speaker 1 (235. Adding new Ingredient Controls)

And here in this method,

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S… Speaker 1 (235. Adding new Ingredient Controls)

which I'll add to the TypeScript file,

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S… Speaker 1 (235. Adding new Ingredient Controls)

I want to add a new control to this array of form

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S… Speaker 1 (235. Adding new Ingredient Controls)

controls.

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S… Speaker 1 (235. Adding new Ingredient Controls)

Now I can simply do this by accessing

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S… Speaker 1 (235. Adding new Ingredient Controls)

my recipe form.

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S… Speaker 1 (235. Adding new Ingredient Controls)

There I can get my ingredients control

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S… Speaker 1 (235. Adding new Ingredient Controls)

and I know that this will be a form array but Angular

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S… Speaker 1 (235. Adding new Ingredient Controls)

or TypeScript to be precise doesn't know this.

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S… Speaker 1 (235. Adding new Ingredient Controls)

So I will explicitly cast it with this cast.

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S… Speaker 1 (235. Adding new Ingredient Controls)

command here basically by enclosing the type I want to convert it to

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S… Speaker 1 (235. Adding new Ingredient Controls)

between smaller than and greater than signs and

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S… Speaker 1 (235. Adding new Ingredient Controls)

then enclosing this all in parentheses and now the part here between

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S… Speaker 1 (235. Adding new Ingredient Controls)

the parentheses is treated like a form array because I know that

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S… Speaker 1 (235. Adding new Ingredient Controls)

it indeed is one so here I can call push and

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S… Speaker 1 (235. Adding new Ingredient Controls)

I want to push

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S… Speaker 1 (235. Adding new Ingredient Controls)

new form group because remember we don't push a control here we

2:41

S… Speaker 1 (235. Adding new Ingredient Controls)

need two inputs so a group of inputs and there again I

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S… Speaker 1 (235. Adding new Ingredient Controls)

will have a name which is a new form control and I will have

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S… Speaker 1 (235. Adding new Ingredient Controls)

an amount which will be a new form control and

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S… Speaker 1 (235. Adding new Ingredient Controls)

we don't need to provide any initial values because I don't want to have any so

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S… Speaker 1 (235. Adding new Ingredient Controls)

if I save this and we go back to the application

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S… Speaker 1 (235. Adding new Ingredient Controls)

We should indeed see that once this reloads here,

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S… Speaker 1 (235. Adding new Ingredient Controls)

if I click add ingredient,

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S… Speaker 1 (235. Adding new Ingredient Controls)

we add a new line.

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S… Speaker 1 (235. Adding new Ingredient Controls)

However,

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S… Speaker 1 (235. Adding new Ingredient Controls)

I also submit the form with each click as you can see here on the right.

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S… Speaker 1 (235. Adding new Ingredient Controls)

This is quickly fixed by making sure that this button receives

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S… Speaker 1 (235. Adding new Ingredient Controls)

the type button.

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S… Speaker 1 (235. Adding new Ingredient Controls)

And now it shouldn't submit the form anymore.

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S… Speaker 1 (235. Adding new Ingredient Controls)

So now it just adds ingredients.

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S… Speaker 1 (235. Adding new Ingredient Controls)

This is all working.

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S… Speaker 1 (235. Adding new Ingredient Controls)

This is great.

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S… Speaker 1 (235. Adding new Ingredient Controls)

Now before we make this form submitable or we do something up

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S… Speaker 1 (235. Adding new Ingredient Controls)

on submission,

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S… Speaker 1 (235. Adding new Ingredient Controls)

let's make sure that we add some validation to it.

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