I am using Reactive-table to display paginated data in my meteor.js app as shown below, yet data displayed in Reactive-table is dependent on on specific user event (Selecting client, project, date range and clicking on the submit button). So I was wondering if it is possible to trigger template.helpers >> myCollection function from the 'submit form' event? OR is it better to define a global variable to store data returned from user query based on the user (client, project, date range selection) then make this global variable the return from the myCollection function?
I have tried researching how to call .helpers function from an template.events event but couldn't find any information. So any help on which approach is better and if calling the .events function is better then how to do that, will be highly appreciated. Thanks.
Below is the code I have in my app:
Template.detailedreport.rendered = function() {
Session.set("dreport_customer", "");
Session.set("dreport_project", "");
Session.set("dreport_startDate", new Date());
Session.set("dreport_endDate", new Date());
$('.set-start-date').datetimepicker({
pickTime: false,
defaultDate: new Date()
});
$('.set-end-date').datetimepicker({
pickTime: false,
defaultDate: new Date()
});
$('.set-start-date').on("dp.change",function (e) {
Session.set("dreport_startDate", $('.set-start-date').data('DateTimePicker').getDate().toLocaleString());
});
$('.set-end-date').on("dp.change",function (e) {
Session.set("dreport_endDate", $('.set-end-date').data('DateTimePicker').getDate().toLocaleString());
});
};
Template.detailedreport.helpers({
customerslist: function() {
return Customers.find({}, {sort:{name: -1}});
},
projectslist: function() {
return Projects.find({customerid: Session.get("dreport_customer")}, {sort:{title: -1}});
},
myCollection: function () {
var now = Session.get("dreport_startDate");
var then = Session.get("dreport_endDate");
var custID = Session.get("dreport_customer");
var projID = Session.get("dreport_project");
Meteor.call('logSummary', now, then, projID, custID, function(error, data){
if(error)
return alert(error.reason);
return data;
});
}
},
settings: function () {
return {
rowsPerPage: 10,
showFilter: true,
showColumnToggles: false,
fields: [
{ key: '0._id.day', label: 'Day' },
{ key: '0.totalhours', label: 'Hours Spent'}
]
};
}
});
Template.detailedreport.events({
'submit form': function(e) {
e.preventDefault();
var now = $('.set-start-date').data('DateTimePicker').getDate().toLocaleString();
var then = $('.set-end-date').data('DateTimePicker').getDate().toLocaleString();
var custID = $(e.target).find('[name=customer]').val();
var projID = $(e.target).find('[name=project]').val();
//Here is the problem as I am not sure how to refresh myCollection function in .helpers
},
'change #customer': function(e){
Session.set("dreport_project", "");
Session.set("dreport_customer", e.currentTarget.value);
},
'change #project': function(e){
Session.set("dreport_project", e.currentTarget.value);
}
});
Template:
<div>
{{> reactiveTable class="table table-bordered table-hover" collection=myCollection settings=settings}}
</div>
Server:
Meteor.methods({
logSummary: function(startDate, endDate, projid, custid){
//Left without filtering based on date, proj, cust for testing only...
return Storylog.find({});
}
});
Template helpers are reactive, meaning that they will be recomputed if their dependencies change. So all you need to do is update their dependencies and then the myCollection helper will be recomputed.
Replace your comment // Here is the problem... with:
Session.set('dreport_endDate', then);
Session.set('dreport_startDate', now);
Session.set('dreport_project', projID);
Session.set('dreport_customer', custID);
Related
Is there a way to create a variable at the top of template helpers to remove duplication.
In this particular situation I'm using var candidate = FlowRouter.getParam('id'); and I have to create the variable in each helper. I assume there is a better way.
professionalOverview: function() {
var candidate = FlowRouter.getParam('id');
return ProfessionalOverview.findOne({ candidateUserId: candidate });
},
candidateImg: function() {
var candidateUserId = FlowRouter.getParam('id');
return Files.findOne({ userId: candidateUserId });
},
EDIT
Template.talentProfileNew.onCreated(function() {
var self = this;
self.autorun(function(){
this.candidateUserId = new ReactiveVar(FlowRouter.getParam('id'));
}
});
Template.talentProfileNew.helpers({
candidate: function() {
console.log(Template.instance().candidateUserId.get());
return Meteor.users.findOne({_id: Template.instance().candidateUserId.get()});
}
});
you could read it once in onCreated() and put it in a reactive var. e.g.
Template.Foo.onCreated(function() {
this.candidateUserId = new ReactiveVar(FlowRouter.getParam('id'));
});
Template.Foo.helpers({
candidateImg() {
return ProfessionalOverview.findOne({ userId: Template.instance().candidateUserId.get()});
}
});
This below is my collection code
Competitions = new Mongo.Collection("competitions");
var CompetitionsSchema = new SimpleSchema({
year: {
type: String
},
division: {
type : String,
allowedValues: ['Elite', '1st','2nd','3rd','4th','Intro']
},
teams:{
type : [TeamSchema],
allowedValues: (function () {
return Teams.find().fetch().map(function (doc) {
return doc.name;
});
}()) //here we wrap the function as expression and invoke it
}
});
In the allowedValues function
Teams.find is empty.
In the router I am subscribing to the publication as follows
this.route('competitions', {
path: '/admin/competitions',
layoutTemplate: 'adminLayout',
waitOn: function () {
return [
Meteor.subscribe('teams')
];
}
});
This is my publish function
Meteor.publish('teams', function() {
return Teams.find({},{sort: {
points: -1,
netRunRate : -1
}});
});
Do I have to do subscription some where else as well?
Your problem is in this piece of code:
allowedValues: (function () {
return Teams.find().fetch().map(function (doc) {
return doc.name;
});
}()) //here we wrap the function as expression and invoke it
This gets called when the page loads. At that point the Teams collection will still be empty on the client side. You need to wait until the data is ready. Since you are using waitOn in iron-router, it might be enough to just move this code to the onRendered callback.
I am trying to define a new ReactiveVar variable to be accessible in all the template sections (ex. .events, .helpers, .rendered ...etc) as shown in my code below, yet I am always getting an error:
Error: Exception in template helper:
ReferenceError: logData is not defined
Can someone please tell me what I am missing / doing wrong here? Thanks
Code:
Template.detailedreport.rendered = function() {
var logData = new ReactiveVar;
logData.set([]);
};
Template.detailedreport.helpers({
myCollection: function () {
return logData.get();
}
});
Template.detailedreport.events({
'submit form': function(e) {
e.preventDefault();
var now = Session.get("startDate");
var then = Session.get("endDate");
var custID = Session.get("customer");
var projID = Session.get("project");
Meteor.call('logSummary', now, then, projID, custID, function(error, data){
if(error)
return alert(error.reason);
logData.set(data);
});
}
});
You need to define the ReactiveVar on the template instance like this :
Template.detailedreport.created = function() {
this.logData = new ReactiveVar([]);
};
Then you'll be able to access it in helpers like this :
Template.detailedreport.helpers({
myCollection: function () {
return Template.instance().logData.get();
}
});
In events you can use the template argument :
Template.detailedreport.events({
'submit form': function(e, template) {
e.preventDefault();
var now = Session.get("startDate");
var then = Session.get("endDate");
var custID = Session.get("customer");
var projID = Session.get("project");
Meteor.call('logSummary', now, then, projID, custID, function(error, data){
if(error){
return alert(error.reason);
}
template.logData.set(data);
});
}
});
I am trying to make collection aggregate in my Meteor.js app as shown below, yet each time I call my server logSummary method I get the following error. Can someone please tell me what I am doing wrong / how to resolve this error? Thanks.
Note: I am using Meteor-aggregate package
TypeError: undefined is not a function
at Object.Template.detailedreport.helpers.myCollection (http://localhost:3000/client/views/report.js?
Code:
Template.detailedreport.rendered = function() {
Session.set("dreport_customer", "");
Session.set("dreport_project", "");
Session.set("dreport_startDate", new Date());
Session.set("dreport_endDate", new Date());
$('.set-start-date').datetimepicker({
pickTime: false,
defaultDate: new Date()
});
$('.set-end-date').datetimepicker({
pickTime: false,
defaultDate: new Date()
});
$('.set-start-date').on("dp.change",function (e) {
Session.set("dreport_startDate", $('.set-start-date').data('DateTimePicker').getDate().toLocaleString());
});
$('.set-end-date').on("dp.change",function (e) {
Session.set("dreport_endDate", $('.set-end-date').data('DateTimePicker').getDate().toLocaleString());
});
};
Template.detailedreport.helpers({
customerslist: function() {
return Customers.find({}, {sort:{name: -1}});
},
projectslist: function() {
return Projects.find({customerid: Session.get("dreport_customer")}, {sort:{title: -1}});
},
myCollection: function () {
var now = Session.get("dreport_startDate");
var then = Session.get("dreport_endDate");
var custID = Session.get("dreport_customer");
var projID = Session.get("dreport_project");
Meteor.call('logSummary', now, then, projID, custID, function(error, data){
if(error)
return alert(error.reason);
return data;
});
},
settings: function () {
return {
rowsPerPage: 10,
showFilter: true,
showColumnToggles: false,
fields: [
{ key: '0._id.day', label: 'Day' },
{ key: '0.totalhours', label: 'Hours Spent'}
]
};
}
});
Template.detailedreport.events({
'submit form': function(e) {
e.preventDefault();
Session.set('dreport_endDate', $('.set-end-date').data('DateTimePicker').getDate().toLocaleString());
Session.set('dreport_startDate', $('.set-start-date').data('DateTimePicker').getDate().toLocaleString());
Session.set('dreport_project', $(e.target).find('[name=project]').val());
Session.set('dreport_customer', $(e.target).find('[name=customer]').val());
},
'change #customer': function(e){
Session.set("dreport_project", "");
Session.set("dreport_customer", e.currentTarget.value);
},
'change #project': function(e){
Session.set("dreport_project", e.currentTarget.value);
}
});
Template:
<div>
{{> reactiveTable class="table table-bordered table-hover" collection=myCollection settings=settings}}
</div>
Server:
Meteor.methods({
logSummary: function(startDate, endDate, projid, custid){
var pipeline = [
{ $match: { date: { $gte: new Date(startDate), $lte: new Date(endDate) },
projectid: projid,
customerid: custid
}
},
{ $group: {
_id: {
"projectid": "$projectid",
"day": { "$dayOfMonth": "$date" },
"month": { "$month": "$date" },
"year": { "$year": "$date" }
},
totalhours: {"$sum": "$hours"}
}}
];
return ProjectLog.aggregate(pipeline);;
}
});
Looking at the ReactiveTable documentation, it looks like you need to do something like:
Template.myTemplate.helpers({
myCollection: function () {
return myCollection;
}
});
Where myCollection is the name of a Mongo/Meteor collection (e.g. BlogPosts) which you defined with e.g. BlogPosts = new Mongo.Collection('blogPosts');
The reason you're getting undefined is not a function is that you are calling a Meteor method inside a template helper. The call is asynchronous so the return value is undefined. Now you are passing undefined to ReactiveTable. ReactiveTable will be trying to call something like myCollection.find() which is essentially undefined.find() and will therefore throw the error you're seeing.
Later on the Meteor call will finish and the data value will be lost because the function has already returned.
You can call Meteor.call inside the onCreated function like so:
Template.myTemplate.onCreated(function () {
Meteor.call('myFunction', 'my', 'params', function (err, result) {
if (err) {
// do something about the error
} else {
Session.set('myData',result);
}
});
});
Template.myTemplate.helpers({
myData: function () {
Session.get('myData')
}
});
This won't fix the issue with ReactiveTable, however.
If the collection you're trying to display is only used for this single page, you could put the aggregation inside the publish function so that minimongo contains only the documents that match the aggregation and therefore the correct documents will appear in your ReactiveTable.
I'm building a meteor app and on one route I'm adding multiple data context like so -
this.route('orgPage', {
path: '/org/:title',
data: {
orgs: function () {Orgs.findOne(this.params._id)},
projects: function() {Meteor.subscribe('projects', this.params._id)}
}
The only problem is that when I try to access this data in my templates js file, I can't access the _id or any of the attributes of orgs.
I've tried several approaches, but it always returns undefined. If I use a single data context, it works perfectly. Here is the function that doesn't function properly -
Template.orgPage.events({
'click #newProject': function(e) {
$('#npModal').modal();
},
'submit #npModal form': function(e, template) {
e.preventDefault();
if(!$(e.target).find('[name=newTitle]').val()) {
var projectTitle = 'Untitled'
} else {
var projectTitle = $(e.target).find('[name=newTitle]').val()
}
var theid = this._id;
var newProject = {
title: projectTitle,
organization: theid
}
Meteor.call('project', newProject, function(error, id) {
if (error)
return alert(error.reason);
$('#npModal').modal('hide');
$('#npModal').on('hidden.bs.modal', function (e) {
Router.go('newFields', {});
})
});
});
Anyone have any ideas? Thanks!!
You have missed a return statement. function () {Orgs.findOne(this.params._id)} should be function () {return Orgs.findOne(this.params._id)}. Further more, this inside this function won't refer to what you want, so you can't use this.params. And why do you subscribe to a subscription as a data context property? Do it in the waitOn function instead.