[SOLVED] Nested document not reactive

help
1

I subscribe to a collection (template level) and store it into an instance variable of the template.

980×394 34.9 KB

Accessing the data via a simple helper works fine, but when it comes to the nested documents (each ticket has x tasks) the template does not re-render when a new nested document is added.

Here the helper function for the sub-documents:

1948×472 48 KB

How can I make the nested-document list reactive again?

2

First `You could use Tickets.findOne(FlowRouter.getParam('_id)) and it is faster on the client then {_id: FlowRouter.getParam('_id)}

Second this.ticket = ... inside onCreated doesnt trigger your tasks helper to recalculation. I guess the best solution for you should be:

onCreated: ->
  this.ticketId = FlowRouter.getParam('_id')

tasks: ->
  ticketId = Template.instance().ticketId
  ticket = Tickets.findOne(ticketId)
  tasks = <fetch an filter data from ticket>
1 Like
3

Good solution, thank you! Here the adjusted (and working code):

986×388 35.9 KB

1690×554 53.1 KB

4

Note that you should be safe with the line
self.projectID = Tickets.findOne(self.ticketID).project

When you call subscribe it is a some time for new records are coming from server. On that time Tickets.findOne(self.ticketID) returns undefined. It is safer to do it like

onRendered
  self.autorun
    self.subHandler = self.subscribe(...)
  self.autorun
    if self.subHandler.ready()
      self.projectID = Tickets.findOne(self.ticketID).project

onDestroyed
  if self.subHandler
    self.subHandler.stop()
1 Like