elplatt
Validate dates on input
I just noticed this when using the "filter: active members" function on the members page, and there was a member in the list but his "membership" column was blank.
I checked his record, and he had a dues plan with normal start-date and end-date, and a "leave" plan with a 0000-0-0 start date and no end. This apparently confuses some things!
The add-plan form should check dates for validity before accepting Save.
We can do this by adding the jquery validate plugin: http://jqueryvalidation.org/
Then we can find fields with the "date" class and set their validation rule accordingly.
Note that client-side stuff like this can be broken by such things as "putting the server instance behind SSL", whereupon a whiny browser decides to just ignore all the scripts in the page, a la #336. It would be more robust to make the server side actually confirm that the date is somewhat valid (at least, doesn't cause #228) before saving it.