Hi,
I was looking over the JsonHandler stuff and it looks pretty
interesting. I thought I'd try it out for a member add page on my latest
project, but I can't figure out how to pass state through the snippet.
Basically, I have a "Team" object that I want to add coaches (Member
objects) to. I was thinking that I could present a JSON form with a name
input so that people could search by name; you'd hit search and the JSON
handling would search for members matching the given name and present them
as a table of users, each with an "Add" link next to them. It's the add link
that I'm having trouble with. I need to be able to access both the member
and the team object when I do the add, but I'm not sure how to pass the Team
object along. I have a couple of ideas:
1. Use a stateful snippet - seems easy but it also seems a little heavy
for just one method out of many on this snippet class.
2. Add the current team to the session - seems really ugly and is
somewhat equivalent to #1
It's early so I may be overthinking this or overlooking something completely
obvious. Or am I completely abusing JSON forms? Should I be making this a
COMET page instead? For reference, the code follows. Teams.passedTeam is a
RequestVar[Can[Team]] that defaults to Empty.
Thanks,
Derek
import JsCmds._
object jsonCoach extends JsonHandler {
def performAdd (coach : Member, teamDet : Team) = {
val team = Model.merge(teamDet)
team.coaches.add(Model.getReference(classOf[Member], coach.id))
Teams.passedTeam(Full(team))
}
def apply(in : Any): JsCmd =
SetHtml("json_result", in match {
case j @ JsonCmd("processForm", _, p: Map[String, _], _) => {
val members = Model.findAll[Member]("memberLikeUserId", "userId" ->
p("name"))
val table : NodeSeq = members.flatMap({member =>
<tr>
<td>{member.userId}</td>
<td>{member.name}</td>
<td>{link("viewTeam", () => performAdd(member,
Teams.passedTeam.is.open_!), Text("Add"))}</td> // TODO: This can't be right
</tr>
})
<table class="display">
<tr>
<th>User ID</th>
<th>Name</th>
<th></th>
</tr>
{ table }
</table>
}
case x => <b>Problem handling search</b>
})
}
def addCoachForm (xhtml : NodeSeq) : NodeSeq = jsonForm(jsonCoach, xhtml)
def addCoachHead = <head>{Script(jsonCoach.jsCmd)}</head>
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