Vulcan/client/templates/comment_form.js

Template.comment_form.helpers({
	show_comment_form: function(){
		return Meteor.user() !== null;
	}
});

Template.comment_form.rendered = function(){
	if(Meteor.user() && !this.editor){
		this.editor = new EpicEditor(EpicEditorOptions).load();
	}
}

Template.comment_form.events = {
  'click input[type=submit]': function(e, instance){
    e.preventDefault();
	var $comment = $('#comment');
	var content = instance.editor.exportFile();

    if(selected_comment_id=Session.get('selected_comment_id')){
    	// post a child comment
	    var parent_comment_id =selected_comment_id;
	    var post_id=Comments.findOne(parent_comment_id).post;
        var comment_id=Meteor.call('comment', post_id, parent_comment_id, content);
        Session.set('selected_comment_id', null);
    	Router.navigate('posts/'+post_id, {trigger:true});
    }else{
    	// post a root comment
    	var parent_comment_id=null;
    	var post_id=Session.get('selected_post_id');
        var comment_id=Meteor.call('comment', post_id, parent_comment_id, content);
        instance.editor.importFile('editor', '');
    }

    trackEvent("new comment", {'post ID': post_id, 'comment ID': comment_id});

  }
};