Marionette.TemplateCache

The TemplateCache provides a cache for retrieving templates from script blocks in your HTML. This will improve the speed of subsequent calls to get a template.

Basic Usage

To use the TemplateCache, call the get method on TemplateCache directly. Internally, instances of the TemplateCache type will be created and stored but you do not have to manually create these instances yourself.

var promise = Backbone.Marionette.TemplateCache.get("#my-template");
promise.done(function(template){
 // use the template here
});

Making multiple calls to get the same template will retrieve the template from the cache on subsequence calls.

Override Template Retrieval

The default template retrieval is to select the template contents from the DOM using jQuery. If you wish to change the way this works, you can override the loadTemplate method on the TemplateCache object.

Backbone.Marionette.TemplateCache.prototype.loadTemplate = function(templateId){
  // load your template here, returning a compiled template or function
  // that returns the rendered HTML
  var myTemplate = compileMyTemplate("some template");

  // send the template back
  return myTemplate;
}

Clear Items From cache

You can clear one or more, or all items from the cache using the clear method. Clearing a template from the cache will force it to re-load from the DOM (or from the overriden loadTemplate function) the next time it is retrieved.

If you do not specify any parameters, all items will be cleared from the cache:

Backbone.Marionette.TemplateCache.get("#my-template");
Backbone.Marionette.TemplateCache.get("#this-template");
Backbone.Marionette.TemplateCache.get("#that-template");

// clear all templates from the cache
Backbone.Marionette.TemplateCache.clear()

If you specify one or more parameters, these parameters are assumed to be the templateId used for loading / caching:

Backbone.Marionette.TemplateCache.get("#my-template");
Backbone.Marionette.TemplateCache.get("#this-template");
Backbone.Marionette.TemplateCache.get("#that-template");

// clear 2 of 3 templates from the cache
Backbone.Marionette.TemplateCache.clear("#my-template", "#this-template")