I have a stateful snippet:
class TemplateEditor
extends StatefulSnippet
{
...
val template =
(TemplateEditor.template.is
openOr
S.redirectTo("chooser", () => {
S.error("Session information lost, please choose what
template to edit again")
}))
...
}
with a companion object holding a RequestVar:
object TemplateEditor
{
/** Request var that is populated with what template is under
edit */
object template extends RequestVar[Box[Template]](Empty)
...
}
The flow is that another page with snippet chooses a template to edit,
and then uses:
S.redirectTo("/editor", () =>
{ TemplateEditor.template(Full(template)) })
to stuff the template to edit into the RequestVar. I'd like for the
state of TemplateEditor to
use the value of the RequestVar, but not to require every link to re-
stuff that RequestVar once
the StatefulSnippet has been instantiated, and not require each
snippet method to be wrapped
with the logic to check the RequestVar and do the redirect if it's not
populated.
The problem I'm running into is that snippet instantiation is
apparently too early to use
S.redirectTo -- the Shortcut exception is being trapped as an
instantiation exception and not
being used as a redirect.
It doesn't look entirely trivial to touch up LiftSession to pass this
through, so I guess
I'm partly soliciting feedback on whether there's a better pattern to
use here (lazy val?) and
partly asking if the behavior as it stands is desired.
Thanks,
-Ross
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