call method in Iron-Router RouteController from Template.tmpl.helpers() not working

问题

I'm trying to push new data on to my clients array each time the loadMoreClients method is called. The publication is expecting this back_to parameter and knows how to handle it. My problem is that I can't seem to call these methods from my Template helpers .

I logged Iron and Iron.controller to the console and both of those exist and are showing me what I expected to see. I just can't seem to find current docs or examples of how to access Iron.controller() methods/properties from my Template helpers

Here is my RouteController code:

ClientController = ApplicationController.extend({
action : function(){
    this.render(Router.current().route.getName())
},

data : function(){
    if( this.params._id ){
        return Clients.findOne({ _id:this.params._id })
    }
},

waitOn : function(){
    return [
        Meteor.subscribe('directory'),
        Meteor.subscribe('clients')
    ]
},

loadMoreClients : function(){
    this.months_back += 3
    this.back_to = moment().subtract(this.months_back,'months').startOf('day')
    this.clients.push(Meteor.subscribe('clients', {back_to:this.back_to, skip:this.clients.length}))
},

loadAllClients : function(){
    this.clients.push(Meteor.subscribe('clients', {back_to:this.start_of_time, skip:this.clients.length}))
},

// we'll use these properties to 'load more' client data
clients : [],
back_to : moment().subtract(3,'months').startOf('day'),
months_back : 3,
start_of_time : moment(new Date(0))
})

Here is my helpers code:

Template.client_list.helpers({
clients : function(){
    var clients = []
    Iron.controller().clients.forEach(function(client){
        // ... some stuff here...
        clients.push(client)
    })

    return clients
},

earliestClientLoaded : function(){
    var controller = Iron.controller()
    return controller.clients[controller.clients.length - 1].createdAt
}
})

Template.client_list.events({
'click .btn-load-more' : function(e){
    e.preventDefault()

    Iron.controller().loadMoreClients()
},

'click .btn-load-all' : function(e){
    e.preventDefault()

    Iron.controller().loadAllClients()
}
})

I'm getting undefined function errors on my Iron.controller() calls to loadMoreClients and loadAllClients methods.

What am I doing wrong here?

回答1:

I have changed the approach to this problem by simply updating the subscription to subscribe to posts earlier than the currently loaded date.

It is working, although seems like there should be a better way than having to waitOn the subscription when I want to load more.

来源：https://stackoverflow.com/questions/27162146/call-method-in-iron-router-routecontroller-from-template-tmpl-helpers-not-work

标签

javascript

node.js

meteor

iron-router

meteor-blaze