[Zope] RE:Quick Question

[J. Cameron Cooper]

Goldthwaite, Joe wrote:

>I'm still running into confusing errors.  I have a form that adds a new user
>that looks like this;
>
><dtml-in valid_roles>
><dtml-if expr="_vars['sequence-item'] != 'Anonymous'">
>
>Zope is giving me this;
>Error Type: SyntaxError
>Error Value:Line 2:"_vars" is an invalid variable name because it starts
>with "_"
>
>The lines are coming out of The Zope Book.  I went over the file twice to
>see if I had mistyped something but I don't see anything.  Is the book
>wrong?  There's nothing in my class called _vars so I assume this is
>supposed to be internal to Zope.  Does anyone know what I might be doing
>wrong?
>  
>
I don't deal much with DTML so I may be a little rusty, but probably it 
meant::

<dtml-in valid_roles>
<dtml-if expr="_['sequence-item'] != 'Anonymous'">

The underscore is the namespace variable. So this syntax looks up the value with key 'sequence-item' in the namespace.

>I'm not very good at typing things in so I've ended up with a lot of typos.
>I can find and fix them pretty easily but I've noticed that my changes don't
>get loaded into zope automatically.  I restart zope but the original syntax
>error stays unless I delete the product before I restart.  Is there an
>easier way to force the product to reload?
>
If you're working on a Product, a restart should re-parse all the code. 
I've never seen it work any other way.

You should also look at the Product refresh functionality. Put a 
'refresh.txt' in your product directory and when you visit the Product 
in the control panel, you can refresh it under the 'Refresh' tab. No 
restart required: it's great.

          --jcc

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Or well or ill, as this day's battle's fought."