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Showing posts from October, 2014

More Fun Creating Dojo widgets and MVC

Here is another article in my "Fun with Dojo" series. Dojo traditionally has been considered slow.  One reason is that Dojo loads alot of modules before it instantiates the page.  Dojo with AMD helps reduce the number of modules when it first loads but not the number of modules.  This is great.  However, one thing that I really dislike are Dojo Dijit widgets.  They are heavy, slow, and require a lot of modules to be loaded. We like the Bootstrap widgets because they are lightweight. So instead of using Dijits that are built into XPages we created our own lightweight Dojo Bootstrap widgets that utilized the most minimal amount of required Dijit modules and dependencies. One of the things that we had to figured out was what bare bone modules that we needed beside dijit._Widget in order to create our own widgets and include them in the loading process.  When we were using Dojo 1.53, we created a custom loader with all the required modules contained in a single file.  Rathe

The Good, Bad, and Ugly about AMD in Dojo

We were testing iPhora Touch 2 with the attendees of MWLUG 2014 in the MWLUG portal and as usual, the interface had issues even after having outside users provide feedback before we rolled it out.  When you are so focused on the creation process it hard to see issues until it is seen by fresh pair of eyes.  So we are working on a new faster and improved interface for iPhora Touch. This is the evolution of any product. Since we are using a JavaScript/JSON Restful API approach most of the changes will be on the front end and only minor changes to the back end which is great.  In theory we can swap out different interfaces with little impact on the back end.  This is where the newer AMD approach for Dojo comes into play. The use of AMD in Dojo allows us to modularize the UI components even more than what we had.  Therefore, we have been upgrading all the iPhora widgets from Dojo 1.53 to Dojo 1.10.0 and at the same time upgrading from Bootstrap 2.32 to 3.2 and the latest version of Fonta

Why an Ideal MVC Framework Fails

One of the "Next Big Things" these days is the use an MVC framework for developing Web applications. There are a number of MVC frameworks out there including Backbone, Ember, and the rapidly growing Angular.  Ideally these MVC frameworks are great, hook things together and any changes to the model (data) and all the views are updated based on the controller code. If there is changes to the model, the data is automatically updated on the server. This is the ideal case. However, it assumes one critical thing, you have the access rights to CRUD data on the server. This is an extremely dangerous assumption. In our iPhora security model, we assume the opposite and you do not have access rights to any data on the server. We do not trust anything and any request. We assume that you are trying to hack and inject. Your authorization is checked during each request. We looked at using Angular since it is the hot stuff of the MVC world and everyone seems to be using it. We also loo