Ahhh, a new work week.

The first perplexing puzzle for the week was a seemingly silly idea (it still is) in Plone where it allows you to view the contents of a given folder in batches of 20. Now, combine this concept (which is good) with a concept of being able to re-order items within the folder (which is good too), you end up with not being able to move items between ‘batches’. (more…)

Another fun problem for me to address today: upgrading to the latest version of Plone (3.1.7 at time of writing) caused my custom PloneFormGen (otherwise known as PFG) view to break in a nasty way:

Module None, line 13, in fgvalidate_base
- <FSControllerValidator at /site/fgvalidate_base used for /site/registration-form>
- Line 13
Module Products.PloneFormGen.content.form, line 519, in fgvalidate
Module plone.protect.authenticator, line 60, in check
Forbidden: Form authenticator is invalid.

Obviously there’s some new validation code for forms in Plone 3.1+. Thanks to a very simple (and useful!) blog entry: http://www.die-welt.net/index.php/blog/239/Upgading_forms_in_Plone_3 , the solution is to add:

<input tal:replace="structure context/@@authenticator/authenticator" />

somewhere in the form.