React, redux, is it true that the render function should never call dispatch or setState()?

[tvilmart]

Using react, and redux, is it true that the render function should never call dispatch or setState()?

I get this error when using dispatch in the render function: “Cannot update during an existing state transition”.

Here they get the error when calling setState() from render().

ReactJS: Warning: setState(...): Cannot update during an existing state transition

[m3g4p0p]

@tvilmart

Using react, and redux, is it true that the render function should never call dispatch or setState()?

Yes. The render() function should not perform any side effects at all, you’d have to do this in a lifecycle method like componentDidUpdate().

[mawburn]

Calling dispatch from render sounds like an easy way to get a stack overflow error.