I am trying to use Knockout ViewModels as self-contained "widgets" that can be placed into any (or multiple) DOM nodes on the page. I had an approach in Backbone that seemed to work well and I'm trying to convert the concept to Knockout.
In Backbone view I would do something like this, using the RequireJS text plugin to pull the template and inject it into the el:
define(['text!templates/myTemplate.html',], function(templateHTML){
var view = Backbone.View.extend({
initialize:function() {
// yes I know the underscore templating stuff doesn't apply in Knockout
this.template = _.template( templateHTML );
this.render();
},
render:function( ) {
// the $el is provided by external code. See next snippet
this.$el.append(this.template(myData));
return this;
}
// other view behavior here
});
return view;
});
And then some other piece of external code could place that view into an existing DOM node:
new MyBackboneView({el: $('#myExistingDivID')});
In Knockout, the closest I can find to this approach is to have the external code use the Text plugin to pull the template, inject it into the div, and then apply the KO bindings:
var mydiv = $('#myExistingDivID');
mydiv.html(myTemplateHTML);
ko.applyBindings(new MyKOViewModel(), mydiv[0]);
1 - Is there a recommended way in Knockout to have the ViewModel itself inject the external template HTML based on the equivalent of Backbone's "el" concept? The key is that the external (router-ish) code controls where the content will be placed, but the ViewModel controls the actual details of the content and where to get the template.
2 - If yes, should I take this approach, or am I abusing the way that Knockout and MVVM are intended to be used?