Last week, we reviewed the basic capabilities of the Dojo Grid by exploring the world of gaskets by creating a simple gasket lookup application. This week, we’ll extend that application with some requests from the fictional president, “Bob”, of our fictional gasket company. Let’s get started!

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We’re excited about the release of Dojo 1.0. In honor of the new release, I’m starting a series on one of the newest additions to the Dojo mix: the Dojo Grid.

When demonstrating Dojo, I prefer tying examples to real-world scenarios. Imagine for a moment that we work at a company that produces gaskets out of sheet material. Each of these gaskets has a part number, a minimum temperature rating, a maximum temperature rating, and maximum pressure rating. Each of these attributes needs to be a column so they can be displayed and sorted so customers can find the information they need in a timely manner. Let’s take a look at how the data looks:

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The release of Dojo 0.9 on August 20th marks a return to our roots: fast and lean. As Alex mentioned in a previous post, the surface area of the API has been reduced. With this API refactor, things were bound to be left out, and rightly so. The “core” of Dojo needed to be lean so we cut out the fat. But cutting out the fat sometimes removes some useful functions that people use. Fortunately, Dojo 0.9 makes it easy to add features on to it with little hassle.

One feature that wasn’t ported to 0.9’s AJAX IO was multipart transfers. I stumbled across this casualty of the refactor while working on a side-project: a port of Eugene Lazutkin’s webui for OpenWRT from Dojo 0.3 to 0.9. webui is a configuration interface for OpenWRT that takes the approach of trying to do most CPU and RAM intensive operations in the browser rather than use the limited CPU and RAM of the router. For example, when you edit the rules for the router’s firewall, the firewall rules file is downloaded to the browser and dissected in JavaScript. This makes it very easy to add rules in the right places and delete the correct rule without tasking the router with this work. After you’ve modified the firewall rules to suit your needs, the file is re-assembled and uploaded to the router using a multipart transfer. Because of this functionality, multipart transfers are vital to this application.

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