AJAX Form Messages

Everything added as a method only exists elsewhere as a type of rule (in PHP). See for example these searches.

Both AJAX and just JQuery
drupal inline form validation

Drupal 7-ready, already been in existence and tested in Drupal 6:
http://drupal.org/project/clientside_validation
which uses: http://drupal.org/project/fapi_validation

Messages to AJAXify with a helper module to http://drupal.org/project/formmsgs

Error messages to AJAXify-- why wait until you submit the form to know this?

The first ones are relevant
* "The username cannot contain multiple spaces in a row."
* username taken (both these handled by http://drupal.org/project/username_check )
* optional duplicate title warning

See Form Messages.

Principle: On a site with multiple administrators, "Configuration is Content".

Manifesto posted http://drupal.org/node/938368#comment-4286326

Seriously, Drupal, what the hell?

This code is the callback for an #ajax property on a form element. The HTML returned replaces the HTML provided. That all works. What gets tricky is the form validation function being called and getting the error.

By using field storage, we get access to translation.

We've defined the info files, made them dependent on the core module. That was fun!

Caching is fun to implement, but try to hold off until you have all your functionality in place. As someone somewhere surely said (OK, it was Donald Knuth), "Premature optimization is the root of all evil."

We could define our form messages as a nested array analogous to menu definitions— a form ID,

Fields offer the advantage of understanding translation for user-entered data. Therefore, using fields, there's a potential

Update: See the module page, http://drupal.org/project/formmsgs
and http://definitivedrupal.org/node/128 for the making of (in progress).