I'm getting this error, when I want to initialize the view from router class.
Error is: Uncaught TypeError: Object # has no method '_ensureElement'
BlogFormView:
App.BlogFormView = Backbone.View.extend({
    el: ".data-form",
    initialize: function(){
        this.template = _.template($("#blog_form_template").html());
        this.render();
    },
    render: function(){
        this.$el.html(this.template({blog: this.model.toJSON()}));
        return this;
    },
    events: {
        "click .submit-blog" : "submitForm"
    },
    submitForm: function(ev){
    }
});
Router:
var blog = new App.Blog();
var blogFormView = App.BlogFormView({model: blog});
 
     
    