meteor Reactive (Vars & Dictionaries) Reactive Query
Example
Example code :
In main.html
<template name="test">
<input type="checkbox" id="checkbox1" name="name" value="data">Check Me
{{showData}}
</template>
In Main.js
var check_status='';
//Reactive Var Initialization
Template.main.onCreated(function (){
check_status=new ReactiveVar({});
});
Template.main.helpers({
showData : function(){
return Collection.find(check_status.get());
}
});
Template.main.events({
"change #checkbox1" : function(){
check_status.set({field: 'data'});
}
});
Explanation:
When we initialize the reactive var check_status we set the value equal to {}. In the helper, at the time of rendering, the same data is passed to the query Collection.find(check_status.get()) which is as good as show all data.
As soon as you click on the checkbox, the event described in the Template.main.events is triggered which sets the value of check_status to {field: data}. Since, this is a reactive var, the showData template is re run and this time the query is Collection.find({field: data}), so only fields, where field matched 'data' is returned.
You will need to add the reactive var package(meteor add reactive-var) before using this commands.
