How to render an empty node?

[Magicloud]

For example,. showing a message when it is set.

if let Some(msg) = self.message {
  node! {
    <div>{text(msg)}</div>
  }
} else {
  // What to do here?
}

[ivanceras]

You can either go with:

view_if(self.message.is_some(), {
  node! {
    <div>{text(self.message.unwrap())}</div>
  }
}

or

if let Some(msg) = self.message {
  node! {
    <div>{text(msg)}</div>
  }
} else {
  <span></span>
}

[Magicloud]

view_if could be tricky. The first parameter being false does not prevent the second parameter from being executed. When unwrap outside (before) node, the whole thing panic when message is None.

[ivanceras]

@Magicloud there is also lazy_view_if. I've added this for the same usage as what you are doing.

[Magicloud]

Cool. Thanks.