From: "Dwayne Morrison" <dcmorrison@tidewater.net>

Hello,

I posted earlier about Xron 0.0.9 event scheduling woes. One of my stabs in the dark seems to work. I removed the 'this()' parameter entirely and now am able to schedule events via DTML.

I'm glad you figured out how to proceed. I wondered why this() was necessary in the first place. Calls to python procedures usually pass this() implicitly. However, here we have a DTML to Python call, and I was never very clear about how they work.

I also had to add the 'US/Eastern' parameter to the DateTime call to get a current value for DateTime. It was returning 12/31/1969.

Hmm, this is different from what I get. DateTime() reliably gives me the current time (in all Zope versions I have used). DateTime(0) is supposed to give 1969/12/31. I haven't a clue why you would get different results.

Xron documentation (works on Zope 2.1.3):

<dtml-with "manage_addProduct['Xron']"> <dtml-call expr="manage_addXronDTMLMethod( this(), 'SchedMethodId1', 'Scheduled Method 1 Title', file = 'Content-Type: text/plain\n\nBANG!!!', executeAt = _.DateTime()+14 )"> </dtml-with>

Here's what works for me on 2.2.0:

<dtml-with "manage_addProduct['Xron']"> <dtml-call expr="manage_addXronDTMLMethod( 'SchedMethodId1', 'Scheduled Method 1 Title', file = 'Content-Type: text/plain\n\nBANG!!!', executeAt = _.DateTime('US/Eastern')+14 )"> </dtml-with>

I'd appreciate any insight as to why this works without the 'this()' parameter in 2.2.0.

I think the real question is why it was necessary with Zope 2.1.3. FWIW, you can also explicily name the title parameter: <dtml-with "manage_addProduct['Xron']"> <dtml-call expr="manage_addXronDTMLMethod( 'SchedMethodId2', title='Scheduled Method 2 Title', executeAt = _.DateTime()+14.0, periodDays = 0.0, file = 'Content-Type: text/plain\n\nBANG!!!', )"> </dtml-with> I hope others on the list will chime in with their knowledge. I don't think either of these questions is specifically about Xron itself. -- Loren