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Improve explanation of passing actions (#162) #177

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Oct 4, 2018
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Improve explanation of passing actions (#162) #177

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fcdc713
Improve explanation of passing actions (#162)
Parrryy Oct 1, 2018
4722ad3
updated quotes (#162)
Parrryy Oct 3, 2018
2d9147f
Fixed broken link (#162)
Parrryy Oct 4, 2018
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15 changes: 15 additions & 0 deletions guides/v3.4.0/components/passing-properties-to-a-component.md
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Expand Up @@ -54,6 +54,21 @@ known as being "bound"). That is, if the value of `componentProperty`
changes in the component, `outerProperty` will be updated to reflect that
change. The reverse is true as well.

In addition to making properties available, actions can be made available
to components. This allows data to flow back up to its parent. You pass actions
like this.

```handlebars {data-filename=app/templates/index.hbs}
{{button-with-confirmation
text="Click here to unsubscribe."
onConfirm=(action "unsubscribe")
}}
```

It is important to note that actions can only be passed from a controller or another
component. They cannot be passed from a route. See [passing an action to the component](../triggering-changes-with-actions/#toc_passing-the-action-to-the-component)
for more details on how to pass actions.

## Positional Params

In addition to passing parameters in by name, you can pass them in by position.
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3 changes: 2 additions & 1 deletion guides/v3.4.0/components/triggering-changes-with-actions.md
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Expand Up @@ -192,7 +192,8 @@ to trigger behavior.

That makes it easy to remember how to add an action to a component. It's
like passing an attribute, but you use the `action` helper to pass
a function instead.
a function instead. Actions can only be passed from a controller or
component, they cannot be passed from a route.

Actions in components allow you to decouple an event happening from how it's handled, leading to modular,
more reusable components.
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