List of All Grails Validation Constraints

February 22, 2010

For some reason, Grails decided to delete their published list of all validation constraints. This official-sounding page just sends you to the reference docs, and its validation page gives the unhelpful message that

A complete reference for the available constraints can be found on the reference guide

I’m not sure what other reference guide this could be referring to, not to mention what it would mean for this information to be found “on” the reference guide, as opposed to “in” it.

Update: @mr_paul_woods sent me to the Grails docs and told me to look in the sidebar. Turns out that I wasn’t supposed to click Validation on the right pane, but rather find “Constraints” in the unrelated left pane. There’s no way to get this list on a page by itself, so here they are to be helpful:


JavaScript Documentation Recommendations

March 19, 2009

For the project I’m currently working on, here are some best practices I’m using for JavaScript documentation:

  • Use YUI Doc syntax. Even if I never actually run YUI Doc, it’s a standardized comment format.
  • At the top of every JS source file, put a multi-line comment, with the first line starting with the source file name. I combine my JS files in the build process, so this allows me to easily find out which source file a particular line of code is from. I even add these headers to JS library files I use.
  • In that file header comment, add an @global directive that lists all the global variables the file creates. Ideally, each of your files would correspond to an @module, and you wouldn’t create any global variables other than classes in that module; and any instances you create would be inside anonymous closures. But some JS libraries you use may create global variables (DWR, for example), and it’s helpful to document the variables they create.