Merge pull request reactjs#88 from jedwards1211/patch-1

bvaughn · web-flow · commit 5453a0652824 · 2017-10-08T18:59:08.000-07:00
Caution (in docs) against dispatching redux actions or triggering component updates by any other means in `componentWillUpdate`
diff --git a/content/docs/reference-react-component.md b/content/docs/reference-react-component.md
@@ -216,7 +216,7 @@ componentWillUpdate(nextProps, nextState)
 
 `componentWillUpdate()` is invoked immediately before rendering when new props or state are being received. Use this as an opportunity to perform preparation before an update occurs. This method is not called for the initial render.
 
-Note that you cannot call `this.setState()` here. If you need to update state in response to a prop change, use `componentWillReceiveProps()` instead.
+Note that you cannot call `this.setState()` here; nor should you do anything else (eg dispatch a redux action) that would trigger an update to a React component before `componentWillUpdate` returns. Use `componentWillReceiveProps()` if you need to update `state` in response to `props` changes.
 
 > Note
 >

Original file line number	Diff line number	Diff line change
`@@ -216,7 +216,7 @@ componentWillUpdate(nextProps, nextState)`
`216`	`216`
`217`	`217`	`componentWillUpdate()` is invoked immediately before rendering when new props or state are being received. Use this as an opportunity to perform preparation before an update occurs. This method is not called for the initial render.
`218`	`218`
`219`		-Note that you cannot call `this.setState()` here. If you need to update state in response to a prop change, use `componentWillReceiveProps()` instead.
	`219`	+Note that you cannot call `this.setState()` here; nor should you do anything else (eg dispatch a redux action) that would trigger an update to a React component before `componentWillUpdate` returns. Use `componentWillReceiveProps()` if you need to update `state` in response to `props` changes.
`220`	`220`
`221`	`221`	`> Note`
`222`	`222`	`>`