Inspired by the data property in
iron:router, this
Meteor package provides a method to set the data context for each instance of a Blaze template
on its creation.
This way, multiple data-driven templates can co-exist independently of any particular route, providing their own data sources.
<template name="hello">
{{welcome}}
</template>
Template.hello.dataContext(function(){
return { welcome: 'Hello world' }
})
The data context function is run before onCreated, however it supports reactivity, therefore a database subscription can be made when the template is created and data provided to that with a cursor.
<template name="hello">
{{#each this}}
{{name}}
{{/each}}
</template>
Template.hello.dataContext(function(){
return People.find({}, {sort: {name: 1}});
});
Template.hello.onCreated(function(){
this.subscribe('people');
});
Access to data set with dataContext can be made through the Template.currentData() function,
as it can when set by renderWithData or iron:router data.
<template name="hello">
<button>{{message}}</button>
</template>
Template.hello.dataContext(function(){
return new Blaze.ReactiveVar('Waiting...')
})
Template.hello.events({
'click button': function(){
Template.currentData().set('Hello!')
}
})
Template.hello.helpers({
message: function(){
return Template.currentData().get();
}
})