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Guillermo Rauch 2017-03-06 08:51:19 -08:00 committed by GitHub
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@ -359,23 +359,22 @@ Router.onAppUpdated = (nextUrl) => {
</ul>
</details></p>
With shallow routing you could chnage the URL without running `getInitialProps` of the page. You'll receive the updated "pathname" and the "query" via the `url` prop of the page.
Shallow routig allows you to change the URL without running `getInitialProps`. You'll receive the updated `pathname` and the `query` via the `url` prop of the same page that's loaded, without losing state.
You can do this by invoking the eith `Router.push` or `Router.replace` with `shallow: true` option. Here's an example:
```js
```jsx
// Current URL is "/"
const href = '/?counter=10'
const as = href
Router.push(href, as, { shallow: true })
```
Now, the URL is updated to "/?counter=10" and page is re-rendered.
You can see the updated URL with `this.props.url` inside the Component.
Now, the URL is updated to `/?counter=10`. You can see the updated URL with `this.props.url` inside the `Component`.
You can also watch for URL changes via [`componentWillReceiveProps`](https://facebook.github.io/react/docs/react-component.html#componentwillreceiveprops) hook as shown below:
You can watch for URL changes via [`componentWillReceiveProps`](https://facebook.github.io/react/docs/react-component.html#componentwillreceiveprops) hook as shown below:
```
```jsx
componentWillReceiveProps(nextProps) {
const { pathname, query } = nextProps.url
// fetch data based on the new query
@ -384,15 +383,11 @@ componentWillReceiveProps(nextProps) {
> NOTES:
>
> Shallow routing works **only** for same page URL changes.
>
> For an example, let's assume we've another page called "about".
> Now you are changing a URL like this:
> Shallow routing works **only** for same page URL changes. For an example, let's assume we've another page called `about`, and you run this:
> ```js
> Router.push('/about?counter=10', '/about?counter=10', { shallow: true })
> ```
> Since that's a new page, it'll run "getInitialProps" of the "about" page even we asked to do shallow routing.
> Since that's a new page, it'll unload the current page, load the new one and call `getInitialProps` even we asked to do shallow routing.
### Prefetching Pages